As the title says...what's the strongest charger? I've noticed my current one when using the GPS with navigation even with it plugged in it'll still lose battery life. Current model I have does 750mA. Are there better ones out there?
Nosferatu. said:
As the title says...what's the strongest charger? I've noticed my current one when using the GPS with navigation even with it plugged in it'll still lose battery life. Current model I have does 750mA. Are there better ones out there?
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Click to collapse
There are ones made for tablets that outputs 2.1A. Not sure how much our phones can actually draw from it though.
EDIT// Per Entropy
Entropy512 said:
Basically, anything with a rating of 0.7 amps or above which shorts D+ and D- together (indicating a dumb charger) will behave the same.
Our internal charging chip limits to 650 mA on AC and 400 on USB. So the only thing you have to watch out for with cheap chargers are:
1) Voltage WAY off from 5 volts (USB standard) at 650 mA load
2) Does not properly signal "dumb charger" causing the phone to charge at 400 mA
Click to expand...
Click to collapse
gsrrr said:
There are ones made for tablets that outputs 2.1A. Not sure how much our phones can actually draw from it though.
Click to expand...
Click to collapse
right my problem is finding one that not only draws 1000mA and uses it. I have one that when I plug it in it'll say AC charging and on the unit it says 1000mA but it obviously isn't doing it's job if I'm losing battery life while running GPS navigation in the car. Short of me buying a bulking inverter for the car so I can plug a wall outlet plug directly into it I'd prefer to find a USB to 12V that works right.
I briefly thumbed this thread to get a bit more educated but still no luck on finding a product that works...
http://forum.xda-developers.com/showthread.php?t=767961
his edit says 650 on wall outlet 400 on USB no matter how big a unit you buy you'll always get 650 Max. Lower brightness and only have the GPS going
Sent from my SGH-I777 using xda premium
I have the AT$T-branded car charger and when I was using the phone for nav I had no issues with over drain unless I also was streaming Slacker or Pandora at the same time. I now have a truck with built-in nav, so I no longer use the phone for that.
my concern is because I just got a Passport 9500ix and I'm using the live cord so it requires the screen to be on, bluetooth on (which is on anyways for my handsfree), and a GPS signal to be on.
I normally don't use GPS either in the car as I have a built in nav for my vehicle.
I use mine with BT in the car and streaming Slacker with the screen on constant and I never turn off GPS. Have yet to have a charging deficit issue with the aforementioned charger.
well the LiveCable had a USB port on it, plugged it in, and says Charging (AC).
Let's see how this thing holds up I'll re-post in this thread if there's a problem. I'll try it's port instead of my current socket which is not sufficient.
Per another recommendation by Entropy I use SetCPU to limit the cpu to 800 MHz when the navigation app is active. There's still enough power left at this state to allow the phone to build a slight charge if plugged in, or to limit battery drain if it's not.
The simple reality of the situation though is that nav consumes a ton of battery. Running the screen, rendering the maps, running the gps, downloading the maps over cell data etc. all at once consumes a lot of power on any device.
In situations where the battery is getting very low but I still need to use the navigation app I also sometimes just turn off the screen and rely on the audio directions. This helps limit power drain quite a bit.
I wonder how much current he official Samsung car dock supplies?
Sent from my SGH-I777 using xda app-developers app
I still have a motorola rapid charger from a while back. You guys know much more than i do im sure, especially with the mA pull but ive never had drain while running GPS with brightness on high on my motorcycle.
Rrryan2 said:
Per another recommendation by Entropy I use SetCPU to limit the cpu to 800 MHz when the navigation app is active. There's still enough power left at this state to allow the phone to build a slight charge if plugged in, or to limit battery drain if it's not.
The simple reality of the situation though is that nav consumes a ton of battery. Running the screen, rendering the maps, running the gps, downloading the maps over cell data etc. all at once consumes a lot of power on any device.
In situations where the battery is getting very low but I still need to use the navigation app I also sometimes just turn off the screen and rely on the audio directions. This helps limit power drain quite a bit.
I wonder how much current he official Samsung car dock supplies?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
interesting about setting CPU down when running navigation! I'll have to try that.
Well the good news is with a combination of the stock USB cable plugged into the Live cord for the radar I'm actually charging now while using navigation (slowly but it's charging). Full brightness though it'll either hold steady or drop maybe 1% in 45min or so. Anything but high brightness and it'll charge.
Rrryan2 said:
Per another recommendation by Entropy I use SetCPU to limit the cpu to 800 MHz when the navigation app is active. There's still enough power left at this state to allow the phone to build a slight charge if plugged in, or to limit battery drain if it's not.
The simple reality of the situation though is that nav consumes a ton of battery. Running the screen, rendering the maps, running the gps, downloading the maps over cell data etc. all at once consumes a lot of power on any device.
In situations where the battery is getting very low but I still need to use the navigation app I also sometimes just turn off the screen and rely on the audio directions. This helps limit power drain quite a bit.
I wonder how much current he official Samsung car dock supplies?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
Samsung car dock just uses whatever its input is. The phone treats it the same as an AC power supply - 650 mA limit regardless of what the power supply capability is.
Interesting note: The power supply's method for signaling a "dumb charger" becomes irrelevant on official docks. All the phone knows is it's docked and it has power, it assumes an AC charger. As a result, power supplies that are intended for iDevices will get detected as USB (400 mA limit on I777) if connected directly, but AC if connected via dock.
Nosferatu. said:
interesting about setting CPU down when running navigation! I'll have to try that.
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Click to collapse
Recent versions of SetCPU make it really easy to set a profile that triggers automatically when the nav app is started. Well worth the $1.99 price of the app.
Nosferatu. said:
Well the good news is with a combination of the stock USB cable plugged into the Live cord for the radar I'm actually charging now while using navigation (slowly but it's charging). Full brightness though it'll either hold steady or drop maybe 1% in 45min or so. Anything but high brightness and it'll charge.
Click to expand...
Click to collapse
Hmm... I confess I haven't paid close attention to it lately, but if I remember right if auto-brightness is selected the screen automatically dims between turns but then ratchets up brightness when a turn is approaching. Maybe setting auto-brightness might handle the issue for you...?
Rrryan2 said:
Recent versions of SetCPU make it really easy to set a profile that triggers automatically when the nav app is started. Well worth the $1.99 price of the app.
Hmm... I confess I haven't paid close attention to it lately, but if I remember right if auto-brightness is selected the screen automatically dims between turns but then ratchets up brightness when a turn is approaching. Maybe setting auto-brightness might handle the issue for you...?
Click to expand...
Click to collapse
-as for SetCPU I'm running that setting now. Once or twice SetCPU has been granted superuser came up while running (fine with me it's doing it's job)
-as for auto brightness I'll try with it later. The software Escort uses is a proprietary program and not directly google's maps program (although it does use it's maps).
https://play.google.com/store/apps/details?id=com.escort.androidui.root&hl=en
you could always flash siyha kernel. it has a setting in ex tweaks to set charging currents. you can up it for all of the devices so usb smart and dumb chargers all charge at 650mA though that might damage a pc usb port... just be careful. and the hardware limits it to 650mA, no more, a lot less
tmckenn2 said:
you could always flash siyha kernel. it has a setting in ex tweaks to set charging currents. you can up it for all of the devices so usb smart and dumb chargers all charge at 650mA though that might damage a pc usb port... just be careful. and the hardware limits it to 650mA, no more, a lot less
Click to expand...
Click to collapse
I do have Siyah kernel any link to a thread about this or a quick how to? I'm sure if I played with it enough I'd figure it out but since you're familiar with the subject I figured you'd hook me up! I tend not to play with these types of tweaks too much on my phone... :good:
I have the OEM Samsung car charger. Thankfully, I can have GPS on while plugged in and the phone still charges up, albeit slowly, but it certainly doesn't drain.
Here's the car charger I have:
http://item.mobileweb.ebay.com/viewitem?itemId=400310588012&index=14&nav=SEARCH&nid=89155668283
Sent from my Samsung Galaxy S II
Related
Anyone find a charger that can actually charge the phone while using the GPS? I have a modified charger with the center pins tacked together and the Samsung genuine car charger, neither of which can keep up with the drain.
Anyone have positive evidence that their charging solution will at least maintain battery life while GPS + screen are running?
I'm at a loss and tired of spending money on chargers that aren't up to the task.
Thank you.
I have the Samsung car mount that comes with a Samsung car charger. Not sure if that's the same charger you have, but I've used it on a road trip so far and it definitely maintains and charges a little. 14 hours of driving btw.
I attempted to call Samsung Accessory support this morning to find out if that charger is different than the basic charger and they were giving me the run around. I didn't want to spend $XX on another charger unless I knew it had a higher output.
Can you give me the spec's on it?
I know the basic samsung charger only puts out 750mA.
I have used numerous chargers in the car while running GPS and none of them actually seem to charge the device; they just keep it "treading water".
Truth is, with the screen size being what it is, and likely both cores firing at full capacity, I don't think it's entirely realistic to expect the thing to charge while doing something so data intensive as GPS; especially, when you consider that your data signal can and will vary WILDLY while driving through different places, which absolutely and invariably will stress the battery even further, contributing to drain whether plugged in or not. That's a lot of work for a relatively small device to handle.
Just my $.02 coming from a mix of experience and common sense.
-Ryan
Guy above you says that his does.
Hell, I'd be happy with treading water, way better than the steep downhill fall I've got going on.
Can limit processor speed by throttling it manually with my OC kernel or by enabling the saving mode the phone has innately. Can reduce data by switching off 4G.
It doesn't need those things to run as a GPS. The GPS itself doesn't seem to eat much battery at all but I realize the screen is huge. However, how can this be a viable device if we can't figure out a way to make it WORK?
I hope that camaroz28 can get back to me on this.
fellstar said:
I attempted to call Samsung Accessory support this morning to find out if that charger is different than the basic charger and they were giving me the run around. I didn't want to spend $XX on another charger unless I knew it had a higher output.
Can you give me the spec's on it?
I know the basic samsung charger only puts out 750mA.
Click to expand...
Click to collapse
There is no writing on it at all so I have no idea what it's output current is.
As an aside, I've heard of a lot of people just getting a small DC->AC converter and then using the original wall charge adapter to charge in the car.
There are two very good posts about this very topic.
This one recommends a charger:
http://forum.xda-developers.com/showthread.php?t=1538341
It also has a link in the OP to the other post about charging the Note.
camaroz28 said:
There is no writing on it at all so I have no idea what it's output current is.
As an aside, I've heard of a lot of people just getting a small DC->AC converter and then using the original wall charge adapter to charge in the car.
Click to expand...
Click to collapse
You can confirm that your phone will charge, albeit slowly, with the provided adapter that comes with the Nav mount?
I'm not a big fan out DC to AC car adapters.
lactardjosh said:
There are two very good posts about this very topic.
This one recommends a charger:
http://forum.xda-developers.com/showthread.php?t=1538341
It also has a link in the OP to the other post about charging the Note.
Click to expand...
Click to collapse
Only did a couple quick searches for "GPS Charging" before making this thread, and didn't find that one!
Thank you guys.
fellstar said:
You can confirm that your phone will charge, albeit slowly, with the provided adapter that comes with the Nav mount?
I'm not a big fan out DC to AC car adapters.
Click to expand...
Click to collapse
Yes, after driving for 7 hours, my batter went from something like 52% to 60%. Don't remember the exact numbers, but it went up. This was while switching between google navigation and an app called "GPS HUD" with Pandora running in the background. Data was mostly HSPA/HSPA+ except for the beginning and end of the trip where I was in LTE cities.
camaroz28 said:
Yes, after driving for 7 hours, my batter went from something like 52% to 60%. Don't remember the exact numbers, but it went up. This was while switching between google navigation and an app called "GPS HUD" with Pandora running in the background. Data was mostly HSPA/HSPA+ except for the beginning and end of the trip where I was in LTE cities.
Click to expand...
Click to collapse
Thanks again Camaroz28.
Maintain a fully charged spare battery in auto
Tried about every auto charging fix I could find on this forum. Still get about 2% per hour discharge. I'm routinely in and out of my car 8-10 hours a day so end up with a dead battery. My fix (not elegant but works) is to maintain a fully charged spare battery in my van using a charger for extra batteries.
Of course could not do this with my iphone which is now relegated to my grandkids for games and music.
I love this forum. Great help to me.
yogidad said:
Tried about every auto charging fix I could find on this forum. Still get about 2% per hour discharge. I'm routinely in and out of my car 8-10 hours a day so end up with a dead battery. My fix (not elegant but works) is to maintain a fully charged spare battery in my van using a charger for extra batteries.
Of course could not do this with my iphone which is now relegated to my grandkids for games and music.
I love this forum. Great help to me.
Click to expand...
Click to collapse
Same, I actually have 3 spare batteries and a spare battery charger. I don't want to have to fool with changing my battery in the car though. I've already ordered the charger from the other thread, should have it by Saturday to try that puppy out.
I'm an engineer, and I travel quite a bit.
The GPS software you use makes a huge difference. If you want the phone to charge, don't use Waze. During a test one day, Waze plugged in drained more battery than Navigon did while unplugged. Mine charges with Navigon and Pandora running simultaneously. I haven't tested Google Navigation yet, I'm going to do that today. The charger I use is a 2.1A Belkin AutoCharger made for iPhones. I'm using a USB extension cable with manually shorted data pins. I get 800-something mA out of it, unfortunately not the full 1000 the stock wall charger puts out. Running an inverter in the car with the stock charger I can get Waze to charge, but that's just not worth it for me. Too much gear in the just to charge a phone.
This is for kernel devs only. The patch itself is useless to those who do not/can not compile their own kernel.
This was a pretty big hit on some other devices so I figured I'd give it a shot for you gys. This allows one to force AC charging for any charger that is detected as USB (e.g. many car chargers) and pull the full current the charger can support. It also provides additional security when connecting to public charging stations because by forcing AC charging, USB/adb data transfers are disabled, protecting your data.
It is essentially a software version of the modified charge only usb cables.
Fast charge can be toggled by issuing:
echo 1 > /sys/kernel/fast_charge/force_fast_charge
and off:
echo 0 > /sys/kernel/fast_charge/force_fast_charge
In addition I have created a toggle fast charge widget that may be used to toggle fast charge on and off right from your home screen:
https://play.google.com/store/apps/details?id=com.incredicontrol.fastchargewidget
I have also implemented a toggle in IncrediControl (free) that will allow you to turn it on and off.
https://play.google.com/store/apps/details?id=com.incredicontrol
For the widget (or any fast charge toggle) to work, you MUST be running a kernel that has this patch implemented.
As a good gesture to support a fellow dev, I ask that if you implement the patch into your kernel, please link to my widget as one means to toggle it. You are of course free to provide other ways to toggle it as well if you so desire.
Kernel devs, if you would like to test the widget yourself to confirm its working, and for convenience of testing, please contact me and I will provide you with a copy. You must show that you are a kernel dev though (i.e. link me to your kernel post so I can match your username).
Good luck have fun!
http://www.incredikernel.com/wp-con...wnload.php?id=shooter_force_fast_charge.patch
Thank you to those who tested for me.
Any takers?
Sent from my ADR6425LVW using XDA
I'm willing to give this a shot, quick question though, does this use AC charging if you plug it into your computer? Or is it only for other sources, such as the car charging you suggested?
Will dual mount SD, or multi mount still work after enabling this
I prefer those functionality
---------------------Tapatalk ----------------------
Sent my new HTC Evolution 3D running ROMeOS UNSENSED.
supaphreek said:
I'm willing to give this a shot, quick question though, does this use AC charging if you plug it into your computer? Or is it only for other sources, such as the car charging you suggested?
Click to expand...
Click to collapse
When on, it will be detected as AC for any source normally detected as USB. This includes your computer. Not every computer can put out enough amperage to significantly increase charge speed though. So it depends on your charging source. Even if your charging source can't put out more than 500mA (what USB charging is limited to), since the phone is in AC mode, it will be able to sleep while connected to the USB source so you will see some small gain because of less power usage from the phone.
jcsy said:
Will dual mount SD, or multi mount still work after enabling this
I prefer those functionality
---------------------Tapatalk ----------------------
Sent my new HTC Evolution 3D running ROMeOS UNSENSED.
Click to expand...
Click to collapse
When you have the feature toggled on, the phone is in AC mode and all USB transfers are disabled. Turning it on and off is as simple as tapping the widget or opening an app and unchecking a box though.
Tap the widget on (or other means of toggling) - AC mode
Tap the widget off - Auto (detects based on charging source like stock)
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Fast charge? I remember having that on the DHD, Lord Clockan's work. It was great having that extra overcharge + fast charge...
I'm no dev, but having this feature on future ROMs would be very nice.
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Any chance you can max the current input? I mean... it begins at >+900mA when the battery is very low, and the current slows down as the battery charges.
Also, when playing a game that, say, consumes about -400mA and the current input is +800mA, the current will slow down to +400mA only (since another 400mA are being consumed by the phone). You can immagine what happens when the battery is almost full and you're playing a game...
I am guessing that having the current input always maxxed out would charge the battery (a lot) faster. Would that damage it, too? If not, could it be implemented?
in experience, below 80% the numbers are as per below
900+ ma WALL PLUG
400+ ma USB
600+ ma CAR CHARGER
these are rough numbers, not accurate
after 80%, they tend to be slower
the latest BMW i posted is able to track -ma drains accurately, and +ma charges accurately but has yet 2 be released by Cedrid. I wonder whats taking him...
http://forum.xda-developers.com/attachment.php?attachmentid=976183&d=1333259488
jcsy said:
the latest BMW i posted is able to track -ma drains accurately, and +ma charges accurately but has yet 2 be released by Cedrid. I wonder whats taking him...
http://forum.xda-developers.com/attachment.php?attachmentid=976183&d=1333259488
Click to expand...
Click to collapse
Can't press install. Can press additional info, can press cancel but can't press install. Weird.
PlayPetepp said:
Can't press install. Can press additional info, can press cancel but can't press install. Weird.
Click to expand...
Click to collapse
I can't press "Install" while Filter Screen / Screen Adjuster is running / turned on. That's the only thing that prevented me from installing apps until now... If you have that installed, I suggest you turn it off for the time you're installing apps.
Otherwise... I don't know... Wipe cache, dalvik, fix permissions, zipalign apks...
Id love to see this implemented.. im running the standard LeeDroId kernel.. id happily flash it over the top if that would be of any help. I do 80% of my phone charging via USB.
Kev
Formhault said:
Fast charge? I remember having that on the DHD, Lord Clockan's work. It was great having that extra overcharge + fast charge...
I'm no dev, but having this feature on future ROMs would be very nice.
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Any chance you can max the current input? I mean... it begins at >+900mA when the battery is very low, and the current slows down as the battery charges.
Also, when playing a game that, say, consumes about -400mA and the current input is +800mA, the current will slow down to +400mA only (since another 400mA are being consumed by the phone). You can immagine what happens when the battery is almost full and you're playing a game...
I am guessing that having the current input always maxxed out would charge the battery (a lot) faster. Would that damage it, too? If not, could it be implemented?
Click to expand...
Click to collapse
I would be concerned with heat buildup and possible damage by pushing that much additional current. Not to say its not possible, but I would be leery of implementing it.
KevAmiga said:
Id love to see this implemented.. im running the standard LeeDroId kernel.. id happily flash it over the top if that would be of any help. I do 80% of my phone charging via USB.
Kev
Click to expand...
Click to collapse
Send me a PM with your e-mail address.
chad0989 said:
I would be concerned with heat buildup and possible damage by pushing that much additional current. Not to say its not possible, but I would be leery of implementing it.
Click to expand...
Click to collapse
As I thought. Not going to make a fuss about it, it was just an idea; I knew it could be dangerous
I bought a pack that had a car charger and a wall charger (both of supposedly 1A output) - lighter than the battery cap of the EVO 3D, rofl. The car charger worked perfectly (the power output was meeting the expectances). The wall charger barely sends 30mA (ROFL). In the pack, I also got some sort of expandable Apple cable. The entire "pack" was cheap Chinese crap, I paid ~$3 on it.
I still have the oh-so-good wall charger. It didn't push much current to the Desire HD even with the fast charging kernel...
Guess in cases like that, there's nothing any kernel patch would be able to solve, eh?
Formhault said:
As I thought. Not going to make a fuss about it, it was just an idea; I knew it could be dangerous
I bought a pack that had a car charger and a wall charger (both of supposedly 1A output) - lighter than the battery cap of the EVO 3D, rofl. The car charger worked perfectly (the power output was meeting the expectances). The wall charger barely sends 30mA (ROFL). In the pack, I also got some sort of expandable Apple cable. The entire "pack" was cheap Chinese crap, I paid ~$3 on it.
I still have the oh-so-good wall charger. It didn't push much current to the Desire HD even with the fast charging kernel...
Guess in cases like that, there's nothing any kernel patch would be able to solve, eh?
Click to expand...
Click to collapse
haha, yeah. You're always ultimately limited to the max the charging source can put out.
jcsy said:
in experience, below 80% the numbers are as per below
900+ ma WALL PLUG
400+ ma USB
600+ ma CAR CHARGER
these are rough numbers, not accurate
after 80%, they tend to be slower
the latest BMW i posted is able to track -ma drains accurately, and +ma charges accurately but has yet 2 be released by Cedrid. I wonder whats taking him...
http://forum.xda-developers.com/attachment.php?attachmentid=976183&d=1333259488
Click to expand...
Click to collapse
I just installed that newer version of BMW. Selected HTC Evo (test) as mA retrieval method. Battery is at 90% and the input current is +305mA. Also, I disagree that the phone takes +900mA from the wall charger when the battery is under 80%. Input over 900 is only when the battery is like under 10%... At 50%, for example, it isn't +900...
ive got 3 wall chargers, and all of them are original from the phones I bought respectively, HD2 HD2 and EVO3D
they report about 900 below a certain %, and it could be 40% , 50%, 80%, etc
i guess you get the drift
anyways, you are supposed to select Automatic to get proper drain readings
forgot 2 mention that
Still need a tester to PM me. Have a test kernel ready to go, just need confirmation so I can post the patch.
chad0989 said:
Still need a tester to PM me. Have a test kernel ready to go, just need confirmation so I can post the patch.
Click to expand...
Click to collapse
hi mate, i would like to test, but is it available for all kernel?
thanks
ilovemeow said:
hi mate, i would like to test, but is it available for all kernel?
thanks
Click to expand...
Click to collapse
Sent you all the info. Thanks!
why dont you release the sources for kernel developers like Leedroid, Anryl, Mdeejay, Chad.goodman, Cile381 to compile into
and then, we users, can test them out as a seperate branch?
Hello, guys. I know this post is awfully long, but please, bear with me
I am fairly new to Sammy, as I just got the S2 (I9100, not some other variant... it's the very original) three days ago. I rooted it, flashed CWM, and already tried a few ROMs. I'm sticking to MIUIv4 (WIUI, actually) for the moment, as I loved having MIUI on my previous devices.
There's just one thing that makes me wanna throw rocks at this phone... and that's not the Super AMOLED+ screen that has stains / ghosting effect... it's the CHARGER.
I believe the charger I'm using is original - it was in the package, so... it can't be a copy, lol. It says it can output 700mA at 5V, which is pretty standard... but it seems like it just doesn't do its job!!!
I've had three HTC devices before, and the HTC charger is just a brick that you plug into the socket, and then plug a USB cable in it (just like Motorola's and Apple's recently). It outputs 1A at 5V.
The Motorola ATRIX I previously owned had a charger that was outputting 850mA at 5.1V. Charging that 1900 mAh beast battery would take just a little over 3 hours!
I no longer own the ATRIX (sold it to get the S2, actually), but I did borrow a HTC charger (with a HTC USB cable) to see if I could charge my S2 faster. Nopes. The charger barely gave the S2 0.5 amps... which is normal, since I hear two pins must be connected in order for the Samsung phone to draw maximum power.
My Galaxy S2 is charging painfully slow with this original charger. I installed Battery Monitor Widget and let it log the battery charging overnight - the log file is attached below this post.
At the very first line of that text file, you can see the charging began. I let the phone turned on, with the screen off, to charge overnight. Wi-Fi, Mobile Data, BT, GPS, Auto-sync was off. It was just in auto 2G/3G mode. That hardly matters!
It looks like the phone is drawing 641mA constantly. It doesn't top 700mA, but that's okay - neither did the HTC phones reach more than 900mA, when the charger was able of 1A output.
It took the SGS2 exactly two hours and 50 minutes to fully charge. Given the fact that the charger outputs 700mA, and the battery is 1650mA, I'd say that's right. A 1900mAh battery was completely charged in 3 hours and something, with a 850mA output charger.
Still, that's painfully slow. I had the HTC EVO 3D, which has a 1730mAh battery. Charging that (@1A) would take little over two and a half hours. I could even browse the web via Wi-Fi or do something else on the phone and the battery would still be completely charged in less than three hours (unless I play a game on 3G with max brightness on, of course).
Also, when the battery was at 1% at lunchtime, I plugged in the charger. I continued to send text messages and browse the web via Wi-Fi (screen brightness was on minimum). The battery level did not rise from 1% even after 5 minutes! You can see that in the battery log. Yes, the phone's battery was almost dead in less than three hours.
Oh, also, the first day I got the phone, after I finished rooting and flashing MIUI and everything... I was playing Dark Legends, over Wi-Fi (screen was at lowest, again). Battery got down to 6%, I plug it into the charger. Ten minutes later, battery was down to 2% ! ! ! So, the charger cannot keep up !
I did my homeworks and did a "bit" of Google searching... it turns out the charger is just as it is. But this is just ridiculous.
-----
I remember seeing something on Twitter several months ago... an article regarding an app that would let you adjust how much power the Galaxy S2 can draw from the charger it's connected to, simply by dragging around a slider. I'm not wrong, I DID see such an article - I just can't find it anymore!
Anyone... any suggestions, please?
Also, please note that I am in Europe, Romania, so I can't just go to a shop and find the most awesome charger that outputs 2A for $5 like you guys can (there, in the US)... It's not really at hand for me, lol.
So, conclusion is the phone can consume more amps during usage than the stock charger can supply.
Either reduce the power usage (lower brightness, disable WiFi/BT) when you're using the phone during charging or get a more powerful charger (although I remember the latest stock ICS kernels don't like charging at a higher voltage than the stock charger supplies, so you'll probably have to install a different kernel which doesn't have this limitation).
Oh, and please stop the non-sense about being in Romania and not having options to buy, the market's full of all kinds of chargers. Get out of the house and search, "lol".
This is not uncommon.
In fact, with my PREVIOUS phone, the SE Mini Pro (the original one), it was actually possible to drain the battery till the phone shut down, even on it's original charger.
With some modified power settings, mostly in CPU voltages, it is quite possible to have the SII charge properly even while in use, but bear in mind, it will take longer to charge if you are using it.
VAXXi said:
So, conclusion is the phone can consume more amps during usage than the stock charger can supply.
Either reduce the power usage (lower brightness, disable WiFi/BT) when you're using the phone during charging or get a more powerful charger (although I remember the latest stock ICS kernels don't like charging at a higher voltage than the stock charger supplies, so you'll probably have to install a different kernel which doesn't have this limitation).
Click to expand...
Click to collapse
Playing Dark Legends, via 3G this time (so the power consumption would be higher, right?), screen at FULL BRIGHTNESS, Bluetooth and GPS activated. Battery Monitor Widget tells me the current being drawn is 641mA. Looks like the phone draws 641mA when charging, ~80% of the time.
The only problem seems to be when the battery level is LOW. Then, no matter what you do, the power level just doesn't rise.
With HTC / Motorola, the power draw was maximum when the battery was at its (almost) lowest level, and would decrease as the battery was filling. With the SGS2, it looks like it draws 640mA from 0% to 70%, THEN it begins to slow down.
VAXXi said:
Oh, and please stop the non-sense about being in Romania and not having options to buy, the market's full of all kinds of chargers. Get out of the house and search, "lol".
Click to expand...
Click to collapse
Oh, but trust me, I have. You know, in our country, even cheap Chinese copies are over-rated. It's hard to find stuff like what they have in the US .
I've seen some sort of a digital charger, so-to-say, which would allow you to set the amperage and voltage that was being outputted. It was able of throwing out anything from .5 to 2 amps, at 3.7 - 5.5V (given your choice). Guess what : friend got it from the States...
You don't see such stuff here, in Romania.
Oh well...
Sideromelane said:
This is not uncommon.
In fact, with my PREVIOUS phone, the SE Mini Pro (the original one), it was actually possible to drain the battery till the phone shut down, even on it's original charger.
With some modified power settings, mostly in CPU voltages, it is quite possible to have the SII charge properly even while in use, but bear in mind, it will take longer to charge if you are using it.
Click to expand...
Click to collapse
On the HTC EVO 3D and Motorola ATRIX, it was yet to be proven whether undervolting the CPU would increase battery life or not. Undervolting as much as 200mV only reduced the ammount of heat that was generated (especially during gaming sessions). Although current = heat... the power consumption didn't seem to change a bit!
I even tried to downclock the CPU to 400 MHz - power draw would still not be sufficient in order for the phone to charge (when the battery level was under 10%). Everything was turned off, light on lowest, CPU pretty low... still going down, lol.
I have also experienced this in the past.... which was rather annoying if I must say however, recently I haven't had this issue, although it still charges quite slowly, it's slightly faster than before. I noticed this difference after I decreased the voltage from the cpu in each step, yes my phone is heavy undervolted thanks to magic config, might want to check that out, but it's still as smooth as ever without a hint of lag props to the hyperdroid team...they are the best in my opinion, I use their rom since the hd2 days recommend their rom to all galaxy s2 users.
Anyway, my point is, I can have my screen in full brightness and still use the phone as is when off charge and it will continue to charge. Also, battery life isn't an issue for me anymore after undervolting, I can live with 15 hours battery life under extreme heavy usage with full screen brightness of 4-5 or more hours of screen on time....and that's with 1650mah battery. I plan to get an official 2000mah battery which will increase it's life more
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
shadyr25 said:
I have also experienced this in the past.... which was rather annoying if I must say however, recently I haven't had this issue, although it still charges quite slowly, it's slightly faster than before. I noticed this difference after I decreased the voltage from the cpu in each step, yes my phone is heavy undervolted thanks to magic config, might want to check that out, but it's still as smooth as ever without a hint of lag props to the hyperdroid team...they are the best in my opinion, I use their rom since the hd2 days recommend their rom to all galaxy s2 users.
Anyway, my point is, I can have my screen in full brightness and still use the phone as is when off charge and it will continue to charge. Also, battery life isn't an issue for me anymore after undervolting, I can live with 15 hours battery life under extreme heavy usage with full screen brightness of 4-5 or more hours of screen on time....and that's with 1650mah battery. I plan to get an official 2000mah battery which will increase it's life more
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Click to expand...
Click to collapse
That's... impressive.
I'm using MIUIv4 (WIUI) wth Siyah v3.2.6.3 kernel. For some reason, if I undervolt even -50mV, the phone freezes :/
Formhault said:
That's... impressive.
I'm using MIUIv4 (WIUI) wth Siyah v3.2.6.3 kernel. For some reason, if I undervolt even -50mV, the phone freezes :/
Click to expand...
Click to collapse
That's.... weird. I thought siyah kernal was more undervolt friendly :/ besides, I read somewhere that not every galaxy s2 can handle undervolting whilst some can. Rather, it could be the kernal too, I use the redpill kernal provided from the hyperdroid team, it's not the best in benchmark wise but what the heck... it doesn't stop to lag, it's extremely fast and responsive, great battery life, undervolt support for further improvements... you won't even notice any slowness compared to high benchmark devices. Red pill kernal is well optimised. I use noop scheduler and conservative governor, it's amazing how redpill handles this. Try it some time. Could solve your problem.
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Formhault said:
The only problem seems to be when the battery level is LOW. Then, no matter what you do, the power level just doesn't rise.
Click to expand...
Click to collapse
Just like your 48x CD burner doesn't write at 48x from start to finish, that's how the charging current is not constant; it depends on the remaining capacity, charging algorithms, etc. You're using a special case and asking too much, the solution has been given already (powerful charger and modified kernel to allow a higher charging current and voltage).
Formhault said:
You don't see such stuff here, in Romania.
Click to expand...
Click to collapse
Yes you do. I got a 1A Energizer charger which really gives 1A for less than 10$. The variable supply you're describing can be found in any proper electronics shop, try "Maica Domnului" street
VAXXi said:
Just like your 48x CD burner doesn't write at 48x from start to finish, that's how the charging current is not constant; it depends on the remaining capacity, charging algorithms, etc. You're using a special case and asking too much, the solution has been given already (powerful charger and modified kernel to allow a higher charging current and voltage).
Click to expand...
Click to collapse
Yeah, I know that. That's exactly what I'm saying. The algorithm is different on the S2, it seems.
On all HTC devices I had, the current draw was at its highest (~900mA) when the battery was near depletion, and as the battery was filling up, the current draw was slowly decreasing. On the S2, it looks like it's the other way around. When the battery is nearly empty (1%), barely 100mA are being drawn. As it fills up, near 10% or so, the current draw remains steady at ~641mA, and decreases only past the 70% point.
Good thing is, the current draw remains steady at 641mA, no matter how much I stress the phone! That's astonishing - the other day, the battery was LEAKING 600mA instead of GETTING 641mA when the simplest tasks were done (no stress, that is), during charging...
Guess the guy who had this phone before me didn't really ever charge up the battery properly He said he had an iPhone charger back at home; I told him "nevermind, keep it".
shadyr25 said:
That's.... weird. I thought siyah kernal was more undervolt friendly :/ besides, I read somewhere that not every galaxy s2 can handle undervolting whilst some can. Rather, it could be the kernal too, I use the redpill kernal provided from the hyperdroid team, it's not the best in benchmark wise but what the heck... it doesn't stop to lag, it's extremely fast and responsive, great battery life, undervolt support for further improvements... you won't even notice any slowness compared to high benchmark devices. Red pill kernal is well optimised. I use noop scheduler and conservative governor, it's amazing how redpill handles this. Try it some time. Could solve your problem.
Samsung Galaxy SII Xtreme ED
Xtreme Energy-Xtreme Power to Live
Impossible made Possible
Click to expand...
Click to collapse
The benchmarks are simply amazing; even with the CPU downclocked to 800 MHz...
I'll look for that kernel, hope it's MIUIv4-compatible. Thank you!
VAXXi said:
Yes you do. I got a 1A Energizer charger which really gives 1A for less than 10$. The variable supply you're describing can be found in any proper electronics shop, try "Maica Domnului" street
Click to expand...
Click to collapse
Everyone's talking about a specific shop down that street... and I never got to actually go there. Guess I gotta look for it... Was kind of doubting it was much of a big deal.
-----
I thought posts made within a specific time range were supposed to merge... That obviously didn't happen. Sorry for the multi post
I’m wondering if there is an app that can show the charging current in mA ? I have come across few apps (i.e: Battery Monitor Widget) which I believe show the power drain, but not the input current while charging. Also the current reading of the Battery Monitor is inconsistent and fluctuates a lot (which I believe is due to the CPU stepping between different frequencies due to various background apps??). Is there a better (more reliable) app that can monitor the actual input instead ?
I have 2 car chargers : An old Samsung CAD300 (rated at 5v/700mA) and a new Belkin charger (rated at 5v/1A). but neither of them can provide enough power to charge my HTC One X while using Google Navigation and streaming audio over BT. Belkin is better at minimizing the drain, but still battery level drops gradually. I modded the Belkin charger by shorting D+ and D-, now it performs much better (earlier the drop was far worse than even the Samsung charger). but want to see the actual output, and hopefully try to find a better charger that can provide enough juice to charge the phone while navigating. I borrowed few chargers from some of my friends to test, but Battery Monitor Widget's reading was too unreliable to accurately test the performance.
EDIT: I do have a multimeter, I guess I could also use that along with a 5ohm resistor (in series) and measure the current to see if the charger is capable of outputting 1A, right ?
Elixir2 widget can display charging current in mA.
phishphinger said:
Elixir2 widget can display charging current in mA.
Click to expand...
Click to collapse
Thanks for the suggestion, but I cant find the value of charging current anywhere in Elixir 2 (at least in the free version). Under Information > Battery > More information, it only gives one current value titled "Current" but that shows 2300mA right now when plugged in to my computer over USB. Which is obviously wrong, no idea what that value is though..
Seems to me like all these apps are displaying random numbers for the current value, or these apps can’t read it property on the One X
Try this. It doesn't work on all phones but dev will respond to emails for support
https://play.google.com/store/apps/...le&utm_medium=organic&utm_term=current+widget
Sent from my M886 using Tapatalk 2
PhoenixFx said:
... or these apps can’t read it property on the One X
Click to expand...
Click to collapse
That may well be it. On my phone it seems to work fine
jbrt said:
Try this. It doesn't work on all phones but dev will respond to emails for support
Click to expand...
Click to collapse
I have already tried that, shows the exact same values as Battery Monitor Widget.
phishphinger said:
That may well be it. On my phone it seems to work fine
Click to expand...
Click to collapse
Yep, looks that way..
Yes, try "Electron": https://play.google.com/store/apps/details?id=com.slash.electron
My phone gets hot like hell when I'm using HERE Drive+ or Waze.
Is it normal?
ps.: posted on the wrong section, sorry.
Pedrorudi said:
My phone gets hot like hell when I'm using HERE Drive+ or Waze.
Is it normal?
ps.: posted on the wrong section, sorry.
Click to expand...
Click to collapse
from my experience if GPS used for long time (> 30 minutes) my nokia 920 get hot.
boril said:
from my experience if GPS used for long time (> 30 minutes) my nokia 920 get hot.
Click to expand...
Click to collapse
And what about battery drain after a while?
My Lumia 920 gets too hot and battery drains really fast, about 30%/hour.
Is that normal?
Pedrorudi said:
And what about battery drain after a while?
My Lumia 920 gets too hot and battery drains really fast, about 30%/hour.
Is that normal?
Click to expand...
Click to collapse
most of the time i used a car charger, so really don't know about the battery drain
Pedrorudi said:
And what about battery drain after a while?
My Lumia 920 gets too hot and battery drains really fast, about 30%/hour.
Is that normal?
Click to expand...
Click to collapse
It is a little higher than normal, but not exactly abnormal.
Here Drive does smash my phone too, but it's less.. abusive on GDR3.
articuno1_au said:
It is a little higher than normal, but not exactly abnormal.
Here Drive does smash my phone too, but it's less.. abusive on GDR3.
Click to expand...
Click to collapse
Nice, I can't wait Microsoft release GDR3!
I'm a person who is a heave GPS user, I need that on my phone without battery drain or phone getting hot
OMG, I've just installed the GDR3 Preview and I must say. GPS improved A LOT! It doesn't make my L920 burn anymore, and the Battery drain is better now.
Actually I use Here Drive also and the battery not only gets hot, but also drains really fast... in fact faster than any charger can charge the phone, so even when it is connected to charger it still drains battery at about 10%~20% per hour. The only cure is to turn off the phone for about 5 min and turn it back on and after a couple of sessions of Here Drive the same thing happens again until you do a cold power cycle again.
I have sent the phone back for service and even complained to Nokia and that did not do anything. In my opinion this seems to be a hardware design flaw with the GPS or the SoC in this phone. I have had this issue ever since I got this phone in Dec 2013. I have the latest available update on it as well.
Battery life is really not a strong point on this phone, and the GPS is not very good at all. Can't rely on the navigation on this phone for a long trip since you will drain your battery, even if it is plugged in to charger.
gorbehnare said:
Battery life is really not a strong point on this phone, and the GPS is not very good at all. Can't rely on the navigation on this phone for a long trip since you will drain your battery, even if it is plugged in to charger.
Click to expand...
Click to collapse
I have to disagree with your statements ... I have used both HERE Drive and Navigon all day with out the drainage issues that you mention -- in fact, the phone will charge while using the navigation ... BUT, there are some things that I have noticed:
Not all charges are the same ... I had some that were not able to charge the phone while using the navigation.
Not all cars are the same -- I have a charger that works in my Rav4 without problems ... went on a trip and rented a Chevy Cruz, and the same charger was not able to keep the phone from discharging when using the navigation -- and it got hot -- that was not the case with the Rav4. I switched to the USB connection in the Cruz -- and it was better, but did not solve the charging issue, although it did not get as hot when using it -- but it did not seem to be able to increase the charge on the phone.
The phone's GPS works without problems -- locks on, and provides good information -- especially if you are using a nav program that has the maps installed in the phone.
RJH57108 said:
Not all charges are the same ... I had some that were not able to charge the phone while using the navigation.
Not all cars are the same -- I have a charger that works in my Rav4 without problems ... went on a trip and rented a Chevy Cruz, and the same charger was not able to keep the phone from discharging when using the navigation -- and it got hot -- that was not the case with the Rav4. I switched to the USB connection in the Cruz -- and it was better, but did not solve the charging issue, although it did not get as hot when using it -- but it did not seem to be able to increase the charge on the phone.
The phone's GPS works without problems -- locks on, and provides good information -- especially if you are using a nav program that has the maps installed in the phone.
Click to expand...
Click to collapse
I wasn't very clear about the GPS function on the phone. My complaint is NOT the GPS accuracy and speed, but the fact that using GPS drains the battery while in use and reduces the battery life significantly even after quitting the application until the phone is rebooted. I apologize for not being clear on that.
I had suspected issues with the charger, and I have 6 different car chargers (ranging from 500mA to 2A outputs). I'm on the road all day and I drive different cars (2012 Mitsubishi and 2013 and now a 2014 Ford Fusion). I can verify that some chargers seem to work better than others. But I cannot verify that if the chargers work differently in different cars.
I also have my work laptop running and I have tried connecting the phone to the USB ports on the laptop with the same result. I have also used the original Nokia wall charger connected to 2 different digital inverters (110v AC, one is 150W output and another 400W, two different brands) and same issue.
In fact if I run a game such as Asphalt 8 on the phone while it is connected to the wall charger at home the battery still drains while playing the game (started last night at 95% charge and drained to 65% in 30min while plugged into the wall charger).
I'm pretty sure my issue is not with the chargers
In short, YES that is common behaviour when using GPS such as Here Drive
Sent from my Lumia 920 using Tapatalk
---------- Post added at 10:48 AM ---------- Previous post was at 10:47 AM ----------
Perhaps this is regional accessibility of satellites?
Sent from my Lumia 920 using Tapatalk
pvt_nemesis said:
In short, YES that is common behaviour when using GPS such as Here Drive
Sent from my Lumia 920 using Tapatalk
---------- Post added at 10:48 AM ---------- Previous post was at 10:47 AM ----------
Perhaps this is regional accessibility of satellites?
Sent from my Lumia 920 using Tapatalk
Click to expand...
Click to collapse
I've figured out that this issue it's not a problem of the charger itself.
It's a security system, if the phone gets too hot, the charging stops to avoid some kind of accident, like battery exploding (as we commonly see on Apple products charging with generic chargers). That's why the battery still goes out even if the phone is plugged in the charger.
When you guys be in a car, try to put the phone in a position that the Air Conditioner can blow the cold air in the back of the phone. The battery will last longer, maybe even it won't dry.
I know this is an old topic, but I wanted to mention this.
The phone *will* get hot and it will drain quickly while using GPS. Even if it is plugged in, it could still drain pretty fast if your charger isn't replenishing your charge as quickly as the phone is draining. The ticket is to use a good charger while in the car. I use the one here: http://ebay.to/1ExuLj6 [shortened link], and it keeps the phone in the plus while using GPS. Before that, I used a mediocre adapter and driving to Valencia, CA from Las Vegas, the phone died after 3.5 hours of driving rendering the use of GPS at that point....pointless. So good adapter = solid GPS use. The phone will still heat up though. There is nothing you can do about that unless you have it on ice