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I remember seeing an App which tells you how much current/voltage you are getting from your charger. It was a very simple app, once you click on it it gives you your charging source's voltage/current reading. I tried searching a lot but cant find it, every time I search only battery readers comes up which I dont want. I want to get the current/voltage reading of the plugged charger.
I am absolutely sure there is an app like that, can someone point me to it?
I've yet to see an app that can do this.
I was looking for this a long time ago and found this way to do it via GScript:
http://forum.xda-developers.com/showpost.php?p=7525192&postcount=4
Hope that helps
The 'BatteryLife' widget (by curvefish) shows the following:
Charging-A/C or USB (slow/fast)
Temp
Voltage
percentage
health?
battery type/technology
If you want to see the current being drawn from the battery try 'CurrentWidget'
Has anyone find something to see the charging voltage?
adriahno said:
Has anyone find something to see the charging voltage?
Click to expand...
Click to collapse
Holy CRAP blast from the past in my notifications haha
Check out my previous post in this thread.
Or install CurrentWidget. Does all the things people are asking for in this thread. But doesn't work with Trigger Redux for some reason.
Sent from my rough sketch of a Vibrant on a brick.
Try this
https://play.google.com/store/apps/details?id=com.manor.currentwidget
:fingers-crossed:
though not nearly perfect but works on few devices
Ampre in the app store. All devices. Tell input amp from charger. Just be sure to take into account your phones operating Amps. So if the app says your chargers putting out 700mah then add about 300mah for your phones e screen and all that and you have about 1000mah output from the charger once you turn your screen off and screen is locked.
Now looking for one that also shows voltage (qualcom quick charger that only puts out 6.2V and 2.2A according to a USB-power-monitor, but I want to make sure the monitor is NOT to blame before yelling at the seller of the quick-charger, my other quick-charger has disappeared since a trip (iirc that DID show 9V and 1.5A with same USB-power-monitor and same phone (Redmi Note 7) and the Samsung Quick-chargers that came with the wife's A40 won't quickcharge my Xiaomi).
I remember getting a Windows phone from work in 2008 or so. One of the first apps I downloaded (and one of the very few available for Windows...) was a charging-current app. We used it to quick-test micro-USB-cables at work
R-P said:
Now looking for one that also shows voltage (qualcom quick charger that only puts out 6.2V and 2.2A according to a USB-power-monitor, but I want to make sure the monitor is NOT to blame before yelling at the seller of the quick-charger, my other quick-charger has disappeared since a trip (iirc that DID show 9V and 1.5A with same USB-power-monitor and same phone (Redmi Note 7) and the Samsung Quick-chargers that came with the wife's A40 won't quickcharge my Xiaomi).
I remember getting a Windows phone from work in 2008 or so. One of the first apps I downloaded (and one of the very few available for Windows...) was a charging-current app. We used it to quick-test micro-USB-cables at work
Click to expand...
Click to collapse
Check BatteryGuru, I am the dev of it.
It always says charging voltage is 5 volts.... I'm charging at 9v, uninstalling app
i just got this phone a few days ago. i love it. nothing wrong with it.
super fast and everything. im on 2.3.6. no issues. my battery lasts 12 hours easy. and actually up to 26 hours so far.
i dont even feel the need for a custom rom. at least not for now.
but one thing that makes me mad is how slow the phone charges, anyone know why this is ? it's kinda frustrating lol
any way to change this ?
also....i kinda hate that there is no camera button on the actual phone. oh well.
*Edited*
well i dont like to charge unless my battery is on red. so that conflicts, its not always red when i go to sleep. but thanks i'll check it out.
and i dont want to unlock to camera. it's easier to take photos with a button is what im saying
mrljlamon said:
well i dont like to charge unless my battery is on red. so that conflicts, its not always red when i go to sleep. but thanks i'll check it out.
and i dont want to unlock to camera. it's easier to take photos with a button is what im saying
Click to expand...
Click to collapse
If I remember correctly waiting till the battery is completely depleted is not a good thing for our batteries.
i never said completely depleted though.
and yea ive read so many reviews to not do that, and reviews that say you should... and reviews to charge it this much and that much and blah blah. may be a new phone, but none of this is new to me.
Charge current is hardware limited from what I've read. Or atleast for the time being. If your using the phone while charging it'll be significantly slower. Also using wallplug makes a difference. If you've got stuff running while charging try throttling down the CPU while charging.
Other than that I think our phone is limited to 650mah to charge. So 1650/650 is about 2.5 hours with perfect efficiency. Now take into account the power being drawn and how the chargers for li batteries work, that's about 3-4 hrs to be expected.
And don't run li batteries all the way down on a regular basis, its not good. I'm not positive on li ion batteries, but with lipo you generally want to use about %80 of rated capacity to prolong life and power of the cell.
400 mA on USB, 650 on a wall charger, CPU/screen usage counts against these limits - no way to change this
Forgot where I read it. Could be wrong too.
Slow charging for this phone was samsungs way of keeping our phones battery in shape. Hopefully prolonging the life of it. I noticed my 3GS lose about 20% of its full capacity in a couple years. Only time will tell?
Siyah has an option to upping the charging mA I believe.
Sent from my AT&T cellular device.
all useful responses and all make sense. thank you guys.
i dont use it when it charges and yea it does take about 4 hours to charge.
coming from a crappy xperia x10 which took about 2 hours to charge from 0 to 100
but this phone is 10 times better even without a custom rom so i can deal.
thank you guys for ur knowledge.
jdbeitz said:
Siyah has an option to upping the charging mA I believe.
Sent from my AT&T cellular device.
Click to expand...
Click to collapse
He removed it because it turned out not to work. (If it's still there I'm surprised - it should be completely gone.)
It turns out the I9100 has the same limitation as the I777 - charging is handled not by the MAX8997, but by a MAX8922.
Entropy512 said:
He removed it because it turned out not to work. (If it's still there I'm surprised - it should be completely gone.)
It turns out the I9100 has the same limitation as the I777 - charging is handled not by the MAX8997, but by a MAX8922.
Click to expand...
Click to collapse
Its still there. I have a 750mA charger and iit SEEMS to help but I don't know how to check it
Sent from my AT&T cellular device.
CurrentWidget
he removed the high ma charge back to defaults. you can still change them in voltage control but it wont do a damn thing. as entropy said 650 wall 450 misc.
My remix:
EM EYE YOU EYE
SIYAH nara to the rest, I'm rollin with the best.
SGS2 I777
Entropy512 said:
CurrentWidget
Click to expand...
Click to collapse
Does that widget only show charging current?
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
thejanitor86 said:
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
Click to expand...
Click to collapse
Enjoy the fireworks.
thejanitor86 said:
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
Click to expand...
Click to collapse
Hmmm when I used to run a different widget it would report that, but not with current widget. However I'm on a different ROM now, what ROM you on?
I'm currently on the latest ICScrewed
Sent from my SGH-I777 using XDA App
thejanitor86 said:
According to currentwidget i am charging at 1850+ mA. So, that cant be right. I am not using any voltage controller.
Click to expand...
Click to collapse
If you are on Entropy's DD kernel you should divide that number by 2.85
Battery charge current monitoring (CurrentWidget) support - only reports charge current and not discharge, and reports a value 2.85 times the actual current. Use CurrentWidget's "operation on value" to divide by 2.85.
Click to expand...
Click to collapse
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)
deleted
-
-
-
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.
-----
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.
-----
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?
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?
Click to expand...
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.
Click to expand...
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
Pixel 3 enables fast (>5W) wireless charging only on Google certified chargers, and there are only a few of them.
On most QI-compatible chargers it will pull out max ~750mA charging current by default (checked by Ampere / 3C Toolbox and simialr apps)
However, there is an interesting control file in /sys/class/power_supply/wireless, voltage_max.
It has default value of 5000000 (5V), and you can write values of up to 9000000 into it (9V), which surprisingly is accepted and leads to more charging current.
However, this should be done while wirelessly charging (as file does not accept writes otherwise).
Code:
echo 9000000 > /sys/class/power_supply/wireless/voltage_max
# Now, check what we've got
grep . /sys/class/power_supply/wireless/voltage_*
voltage_max:9000000
voltage_now:8568000 # Means it has been raised by device
After such write, charging current can be as high as 1290mA (compared to 700-750mA stock).
This change reverts after the end of charging session, however.
Question to kernel devs around here - can this be made permanent in some of custom kernels, or have a SysFS switch like "USB3 fast charge"?
The issue is to find where the default value is stored and alter it there.
EDIT Currently this can be made permanent by means of Magisk module "Advanced Charging Control" (https://forum.xda-developers.com/apps/magisk/module-magic-charging-switch-cs-v2017-9-t3668427),
by adding the following to config:
Code:
onPlugged=./wireless/voltage_max:9000000
Nice find. Given how many folks are ending up with useless Pixel 3 and 3XL devices after using off-brand wireless chargers I am hesitant to use one even with the Google empowered limiters.
Have you verified that the charging speed actually increases?
MishaalRahman said:
Have you verified that the charging speed actually increases?
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Click to collapse
Yes, battery charging current reported by Ampere app is higher. And the battery charges faster (in % per minute)
Can anyone else verify?
Confirmed it does indeed charger faster using a Samsung wireless fast charger and a cheap $6 ebay chinese wireless charger. Enabling 9V DOES cause some slightly audible "ticking" noises every second when playing ear next to charger. Normally its completely silent.
I've added this to Proton Kernel as part of the standard "USB fast charge" option that EXKM, Kernel Adiutor, and FKM can tune. It's disabled by default, but please read the following disclaimer thorougly before enabling it:
Think twice before enabling fast wireless charging because cheap chargers can cause your phone to heat up significantly, harming the battery permanently. They may also cause temporary issues with your phone (such as ticking sounds) or permanent damage to internal circuits. However, if used properly with a high-quality charger, there should not be any issues. Enable at your own risk. I am not responsible for any damage to you or your phone caused by this feature.
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That being said, several users have gotten good results after enabling it. It's ultimately a question of how cheap your charger is.
k0rner said:
After such write, charging current can be as high as 1290mA (compared to 700-750mA stock).
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I am not sure how true is this, my Pixel 3 charges at 1850mA by default without any modification thru wireless charger and 2900 mA with a wired charger. I am using Pixel stand and Pixel 3 charger.
ManthanRB said:
I am not sure how true is this, my Pixel 3 charges at 1850mA by default without any modification thru wireless charger and 2900 mA with a wired charger. I am using Pixel stand and Pixel 3 charger.
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This is for non Pixel Stand owners to get closer to the speed of a Pixel Stand.
If possible for fast charge now, can someone locate the trigger for the special pixel stand charging dock screen?
acidspider said:
If possible for fast charge now, can someone locate the trigger for the special pixel stand charging dock screen?
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That needs someone with the Pixel Stand (e.g. not me) to investigate.
Or, at least do the following while the phone is on the stand, in the terminal:
Code:
su
cd /sys/class/power_supply/wireless
grep . *
and post the output here.
Does anyone know the safe/recommended wireless charging temperature range? I want to do some comparisons of different wireless chargers I own and see if they're within tolerance. Thanks!
EDIT: Actually, if anyone can tell me what the Google Pixel stand normally gets the temperature up to, then I'll have a benchmark for comparison. Thanks!
fronc said:
Does anyone know the safe/recommended wireless charging temperature range? I want to do some comparisons of different wireless chargers I own and see if they're within tolerance. Thanks!
EDIT: Actually, if anyone can tell me what the Google Pixel stand normally gets the temperature up to, then I'll have a benchmark for comparison. Thanks!
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I'm getting the phone and stand tomorrow. I'm interested in this mod so I'll check the temps and keep you posted
lohanchien said:
I'm getting the phone and stand tomorrow. I'm interested in this mod so I'll check the temps and keep you posted
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Awesome. This will be very helpful information for the community! Thanks!
fronc said:
Awesome. This will be very helpful information for the community! Thanks!
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Click to collapse
Trying to prepare for this test. I only know of one app that can chart temperature over time but it only allows 200 data points so I'll have to set the refresh rate at 30s which will allow 1.6hrs of recording. I'll have to test from 50% to full and hopefully that'll give enough data. I wanted to test from 1% to full charge but that would mean I have to set the refresh interval to close to 2min, which would wash out temperature fluctuations during those two minutes. Do you know of any app that can chart temperature over time with more than 200 data points?
lohanchien said:
Trying to prepare for this test. I only know of one app that can chart temperature over time but it only allows 200 data points so I'll have to set the refresh rate at 30s which will allow 1.6hrs of recording. I'll have to test from 50% to full and hopefully that'll give enough data. I wanted to test from 1% to full charge but that would mean I have to set the refresh interval to close to 2min, which would wash out temperature fluctuations during those two minutes. Do you know of any app that can chart temperature over time with more than 200 data points?
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I do not, but I think that should be sufficient. Maybe a second test from 0 to 50% some other time would be useful as well.
Sent from my Pixel 3 XL using Tapatalk
fronc said:
I do not, but I think that should be sufficient. Maybe a second test from 0 to 50% some other time would be useful as well.
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Yeah I can try that too. But I wanted to see how it behaves over the whole range. It's possible if going from 1 to full might give higher temperatures since the cells will be heated for longer. I guess I'll test 1-50 then 50-100 at 30s then another test 1-100 at two min intervals.
Edit: Miscalculated, 60s from 1-100 should be enough. That's more than 3 hrs. I doubt it'll take that long to fully charge
lohanchien said:
Trying to prepare for this test. I only know of one app that can chart temperature over time but it only allows 200 data points so I'll have to set the refresh rate at 30s which will allow 1.6hrs of recording. I'll have to test from 50% to full and hopefully that'll give enough data. I wanted to test from 1% to full charge but that would mean I have to set the refresh interval to close to 2min, which would wash out temperature fluctuations during those two minutes. Do you know of any app that can chart temperature over time with more than 200 data points?
Click to expand...
Click to collapse
Could you ask the dev for a custom modded apk to increase to 400 data points?
k0rner said:
That needs someone with the Pixel Stand (e.g. not me) to investigate.
Or, at least do the following while the phone is on the stand, in the terminal:
Code:
su
cd /sys/class/power_supply/wireless
grep . *
and post the output here.
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Click to collapse
capacity:83
current_max:1100000
current_now:1022000
grep: device: Is a directory
online:1
grep: power: Is a directory
present:1
serial_number:e0adc0f6
grep: subsystem: Is a directory
temp:3220
type:Wireless
ueventOWER_SUPPLY_NAME=wireless
ueventOWER_SUPPLY_PRESENT=1
ueventOWER_SUPPLY_ONLINE=1
ueventOWER_SUPPLY_CURRENT_NOW=1022000
ueventOWER_SUPPLY_CURRENT_MAX=1100000
ueventOWER_SUPPLY_VOLTAGE_NOW=8914000
ueventOWER_SUPPLY_VOLTAGE_MAX=9000000
ueventOWER_SUPPLY_TEMP=3220
ueventOWER_SUPPLY_SERIAL_NUMBER=e0adc0f6
ueventOWER_SUPPLY_CAPACITY=83
voltage_max:9000000
voltage_now:8914000
:/sys/class/power_supply/wireless #
Sent from my [device_name] using XDA-Developers Legacy app
Started the first test. Going from 50-100 with case off and pixel stand app cycling through photos. Next I'll go with the same but turn off photos and leave just the clock in ambient mode. I'll then test the same as the first two with case on. So far it's charging at 1%/min so I set the refresh interval to 15sec. That'll give 50min of data, just enough for the full charge from 50%