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So I went on a 2 hour trip using my EVO as a gps. I had it plugged into the car charger the entire time. Little did I know the EVO was using the battery faster than it was charging. I've done this many times with the EVO 4G with no problems. Any suggestions? The phone is basically useless as a gps for any long distance trips. The battery will never last.
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get current widget, it tell you how fast your phone is charging, and when unplug how fast your phone is draining in mah, note your mah usage when unplug, then note your mah usage when battery is fairly low and plugged in to charge with the car charger.
if your battery is low (below 50%) and your phone still won't charge faster than 500mah on the car charger, it will not keep up with GPS uses, be aware that as the battery approach full, it charges slower and slower, near 97~99% it will only charge @ about 100mah rate.
I bet you have a cheapy car charger that only supply 500 mAmp, get one that can supply 1000 to 2000 mAmp (1A to 2A... 2A usually for DUAL usb outlet type charger)
deleted... double post hmmm
Mine wasn't charging unless it was plugged into the wall until I typed ##3828# and checked "enable USB charging". Now it charges while plugged into a computer or car as well.
Password is your MSL, lots of posts how to get it. Not responsible if you mess your phone up.
Sent from my PG86100 using XDA Premium App
bitslizer said:
get current widget, it tell you how fast your phone is charging, and when unplug how fast your phone is draining in mah, note your mah usage when unplug, then note your mah usage when battery is fairly low and plugged in to charge with the car charger.
if your battery is low (below 50%) and your phone still won't charge faster than 500mah on the car charger, it will not keep up with GPS uses, be aware that as the battery approach full, it charges slower and slower, near 97~99% it will only charge @ about 100mah rate.
I bet you have a cheapy car charger that only supply 500 mAmp, get one that can supply 1000 to 2000 mAmp (1A to 2A... 2A usually for DUAL usb outlet type charger)
Click to expand...
Click to collapse
Can you point me in the direction of a 1000/2000 chargers?
ianoob said:
Mine wasn't charging unless it was plugged into the wall until I typed ##3828# and checked "enable USB charging". Now it charges while plugged into a computer or car as well.
Password is your MSL, lots of posts how to get it. Not responsible if you mess your phone up.
Sent from my PG86100 using XDA Premium App
Click to expand...
Click to collapse
So i enabled usb charging and when I go back into the ##3282# menu it it always reverts back. How do you get it to stick.
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bitslizer said:
get current widget, it tell you how fast your phone is charging, and when unplug how fast your phone is draining in mah, note your mah usage when unplug, then note your mah usage when battery is fairly low and plugged in to charge with the car charger.
if your battery is low (below 50%) and your phone still won't charge faster than 500mah on the car charger, it will not keep up with GPS uses, be aware that as the battery approach full, it charges slower and slower, near 97~99% it will only charge @ about 100mah rate.
I bet you have a cheapy car charger that only supply 500 mAmp, get one that can supply 1000 to 2000 mAmp (1A to 2A... 2A usually for DUAL usb outlet type charger)
Click to expand...
Click to collapse
Also, I have a decent charger. It's one of the ones that has two ports on it. By the way I was only charging the EVO 3D I didn't have anything else connected.
Sent from my PG86100 using Tapatalk
billyapd21 said:
So i enabled usb charging and when I go back into the ##3282# menu it it always reverts back. How do you get it to stick.
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Click to expand...
Click to collapse
Usually in that mode you have to click menu then hit commit modifications..
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billyapd21 said:
So i enabled usb charging and when I go back into the ##3282# menu it it always reverts back. How do you get it to stick.
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Click to expand...
Click to collapse
After checking the box, hit menu apply changes
Sent from my PG86100 using XDA Premium App
I've never had a problem using this older but more powerful iGo AutoPower 3000 car charger. Overstock has them for $6.50+shipping and you get a bunch of power tips with it but not a microUSB tip.
http://www.overstock.com/Electronics/iGo-AutoPower-3000-Car-Charger-Power-Adapter/3668307/product.html
The power specs on the package I have say:
DC Input: 11.5-16 VDC
Power Output: Up to 15 Watts continuous
Radio Shack sells the iGo a97 tip for $10+taxes but Amazon has the tip for $6+shipping(free shipping if you have prime).
http://www.amazon.com/iGo-Kindle-Motorola-RAZR2-KRAZR2/dp/B0012J52OC/ref=sr_1_1?ie=UTF8&qid=1310316568&sr=8-1
From my understanding, the tips have a resister in them which limits the mAmp output but I'm not sure what the a97 tip specs are since iGo doesn't seem to release that info. Hopefully it's 1A like the wall charger. I can verify that the newer single output iGo chargers are limited to .75A. So even if the tip is 1A, the charger is the limiting factor, hence why I recommend the older, more powerful one.
billyapd21 said:
Also, I have a decent charger. It's one of the ones that has two ports on it. By the way I was only charging the EVO 3D I didn't have anything else connected.
Sent from my PG86100 using Tapatalk
Click to expand...
Click to collapse
Read the label on the charger, make sure it say at least 1A or even better 2A
lots of cheapy dual USB on ebay that's not rated for 2A
if you got a 2A charger and current widget still show 500ma charge rate,
then you may have to figure out if your phone is charging in USB charge mode with the car charge (limit to 500ma by the phone per USB spec) or in AC charge mode (charge at up to 1A)
I just came across this other day that point out this problem.
http://www.amazon.com/gp/customer-m...B9U8Q/ref=cm_ciu_pdp_images_3?ie=UTF8&index=3
look at the mouse over box comment... of course every charger is different so don't just blindly do the mod if you have a different charger.
as for the other guy asking for 2A charger....
Ebay and Amazon have alot, just make sure they specificly say 1A for single USB or 2A for dual USB output.
for 2A dual USB, the OEM HTC thunderbolt one seem to be the best but also most pricey, some alternative are the Motorola dual usb and the Tmobile my touch 4g dual USB
MRBULLRED said:
Usually in that mode you have to click menu then hit commit modifications..
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Click to expand...
Click to collapse
It's weird, I click the box for usb charging then click commit changes and a little box pops up "no changes made" I'm not sure how to save the changes.
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billyapd21 said:
It's weird, I click the box for usb charging then click commit changes and a little box pops up "no changes made" I'm not sure how to save the changes.
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Click to expand...
Click to collapse
Test it, it may have taken
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Was having the same issue;
I used the car charger I had for my EVO, left it on for 3+ hrs, with little to no increase from where I put it on at. Ended up using a buddy of mine sharger and viola. Imex99 explained the reason for it. Just buy a new charger with 1A/2A output rating and you'll be good.
I'm having the same issues. I click enable usb charging and then commit, but it keeps reverting back to disabled with no difference in charging capability.
Speaking of car charging, why does the battery temperature vary so much between AC & USB, versus Car charging?
With the supplied HTC AC charger or USB connected to a computer, the battery's charging voltage is 4.333 volts and the temperature is 81*F.
With a Sprint Car Charger, the charging voltage is 4.333 volts but the temperature is 95.5*F
Even chargers rated at 1A/2A may not have the appropriate pins soldered together to enable 1amp charging. Please see this thread I made when I had the Evo 4G:
http://forum.xda-developers.com/showthread.php?t=767961
GooseEye said:
I've never had a problem using this older but more powerful iGo AutoPower 3000 car charger. Overstock has them for $6.50+shipping and you get a bunch of power tips with it but not a microUSB tip.
http://www.overstock.com/Electronics/iGo-AutoPower-3000-Car-Charger-Power-Adapter/3668307/product.html
The power specs on the package I have say:
DC Input: 11.5-16 VDC
Power Output: Up to 15 Watts continuous
Radio Shack sells the iGo a97 tip for $10+taxes but Amazon has the tip for $6+shipping(free shipping if you have prime).
http://www.amazon.com/iGo-Kindle-Motorola-RAZR2-KRAZR2/dp/B0012J52OC/ref=sr_1_1?ie=UTF8&qid=1310316568&sr=8-1
From my understanding, the tips have a resister in them which limits the mAmp output but I'm not sure what the a97 tip specs are since iGo doesn't seem to release that info. Hopefully it's 1A like the wall charger. I can verify that the newer single output iGo chargers are limited to .75A. So even if the tip is 1A, the charger is the limiting factor, hence why I recommend the older, more powerful one.
Click to expand...
Click to collapse
i use this too. works great
I don't know if it's a kernel/rom problem, or a hardware controller that's at fault, but ever since I got this phone charging in car chargers, computer usb outlets, and even alternate wall chargers has been painstakingly slow!
It takes forever to charge, and takes a dedicated powerful wall outlet to even do anything.
Anyone else experiencing this?
The default Samsung Provided Wall outlet charger provides .7A of power, while USB provides .5A of power max. Also what percentage do you charge it at, and can you take a screenshot of your battery usage graph?
The 3rd party chargers that designed for iDevices are not recognized as AC chargers and will be charging at USB mode which is much shower.
Sent from my SAMSUNG-SGH-I777 using XDA App
According to Entropy512, here is the quote:
Improved battery charge algorithm for faster charging - Initial research indicates we have an alternate battery charger chip (MAX8922) that differs from the MAX8997 used in the I9100. We DO have an 8997 also - but on our device for some reason Samsung decided to use an alternate chip instead of using the 8997's built-in charging. This means we have far fewer options (90,400,660 mA) in terms of charge rates compared to the I9100 (from 200 to 950 in 50 mA steps). So we might not be able to implement any fancy charging algorithms.
Click to expand...
Click to collapse
So if I am understanding correctly we were limited to 660 mA at max and unless some way to change it is found, there is unfortunately no use from more powerful chargers .
Battery Charge
Bowsa2511 said:
I don't know if it's a kernel/rom problem, or a hardware controller that's at fault, but ever since I got this phone charging in car chargers, computer usb outlets, and even alternate wall chargers has been painstakingly slow!
It takes forever to charge, and takes a dedicated powerful wall outlet to even do anything.
Anyone else experiencing this?
Click to expand...
Click to collapse
Perhaps you have either a faulty battery or a faulty charger.
Here is a link where you can buy a new battery and wall charger for under 8 bucks for both with free shipping!
Check it out here: http://www.ebay.com/itm/1800m-BATTE...045605?pt=PDA_Accessories&hash=item43aa9a4465
Put your phone in to power saving mode and see if it charges faster.
Other wise exchange it under warranty.
I've experienced that this devices charges significantly slower then my previous devices.
I found it odd when I saw the stock a/c USB adapter outputs at .7mA so i did a starch and found an article out there with a statement from Samsung stating that their devices are designed to charge slow because it's healthier for the battery.
I don't know if the charging current is restricted by some code in the kernel or a physical chip in the main board.
Sent from my SAMSUNG-SGH-I777 using xda premium
It is true that slow charges do increase the overall life of the battery. Also not charging it all the way or discharging it all the way will keep the life of the battery. If you discharge the phone all the way down, it will take much longer to charge than charging it back up from 20% or so.
I got one of these to combat this problem:
http://www.amazon.com/gp/product/B005LGUEE0/ref=oh_o00_s00_i00_details
Even comes with an official battery.
poofyhairguy said:
I got one of these to combat this problem:
http://www.amazon.com/gp/product/B005LGUEE0/ref=oh_o00_s00_i00_details
Even comes with an official battery.
Click to expand...
Click to collapse
Can you please post the output voltage and amperage for the battery charger on that accessory? Should be either on a sticker on the bottom of the device our written in fine print on the charger.
Also just to double check, it does not charge a docked device, just the spare battery?
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fone_fanatic said:
I've experienced that this devices charges significantly slower then my previous devices.
I found it odd when I saw the stock a/c USB adapter outputs at .7mA so i did a starch and found an article out there with a statement from Samsung stating that their devices are designed to charge slow because it's healthier for the battery.
I don't know if the charging current is restricted by some code in the kernel or a physical chip in the main board.
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
Physical chip. However on other GS2s and original GalaxyS phones, the chip was fairly controllable by the kernel.
Ours isn't - it has three settings. 90, 400, 660 mA.
fone_fanatic said:
Can you please post the output voltage and amperage for the battery charger on that accessory? Should be either on a sticker on the bottom of the device our written in fine print on the charger.
Also just to double check, it does not charge a docked device, just the spare battery?
Sent from my SAMSUNG-SGH-I777 using Tapatalk
Click to expand...
Click to collapse
It is 600mA, and it just charges the spare battery.
I strongly advise against buying third party batteries or chargers. The Galaxy S 2 (AT&T version) uses a battery with NFC technology. Using anything other than an OEM Samsung battery, or an NFC compliant battery could cause damage to your device.
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Mine isn't third party. All official. Just cheaper thanks to Amazon.
Wondering if anyone has tried it? I remember reading that the wall charger from my Tab 10.1 was more powerful than for the phones because it would take FOREVER to charge. Wonder if it's compatible with our S3?
Anyone?
I believe that anything that charges on USB is just getting 5 vt, so any charger would work with any phone/tab if it is charging through USB. I would guess that the wall chargers are also putting out 5vt and would therefor be fine with any mini USB plug charging device.
Easy to check, plug it in and see how it works. (Buy insurance first )
Yes,
I have been using my tab 10.1 charger since the first day I got my sgs3.
It DOES charge faster, about an hour for a full charge from <8%
No problems I have noticed, and I am using blazer rom.
Sent from my SPH-L710 using xda premium
gyrra said:
Yes,
I have been using my tab 10.1 charger since the first day I got my sgs3.
It DOES charge faster, about an hour for a full charge from <8%
No problems I have noticed, and I am using blazer rom.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
An hour, eh? Nice. I thought it would charge faster but not that fast.
And im definitely talking about the using an outlet, not usb.
Thanks for the confirmation!
No problem,
I knew you meant the AC charger, and that's why I posted. USB charging is slow until someone adds in the fastcharge ability to a kernel for our s3's
Glad I could be of help.
Sent from my SPH-L710 using xda premium
Gave you your first thanks!
if this helps i used a blackberry charger and it worked.. i have had no issues.
(DEL)
lostsoul565 said:
if this helps i used a blackberry charger and it worked.. i have had no issues.
Click to expand...
Click to collapse
Not talking about blackberry either. The wall charger for the Tab is more powerful than phone chargers. Thats the only charger im asking about.
tony yayo said:
Not talking about blackberry either. The wall charger for the Tab is more powerful than phone chargers. Thats the only charger im asking about.
Click to expand...
Click to collapse
Any modern device will limit its own current draw to what is needed to do the job. While it is certainly possible for a charger to be underpowered resulting in slower charging it should not be possible for a charger to be overpowered. That is, there is some maximum charge speed the phone is capable of and that limit is expressed as its maximum mA draw. a charger that sources under the max mA will be slower than one that meets or exceeds it. A charger that exceeds the max mA will not charge any faster than any other charger that also exceeds the device's max mA regardless of the differences in their source capacity.
So, if that makes sense to you then you should know it ought to be safe to use a powerful charger and that if faster charging results then the stock charger is in fact underpowered for the device it was paired with.
Disclaimer: Any engineer worth his salt is going to current limit the charging circuit on the phone. However, if this were not the case then providing increased charging capacity will most certainly damage the device.
crabapples said:
Any modern device will limit its own current draw to what is needed to do the job. While it is certainly possible for a charger to be underpowered resulting in slower charging it should not be possible for a charger to be overpowered. That is, there is some maximum charge speed the phone is capable of and that limit is expressed as its maximum mA draw. a charger that sources under the max mA will be slower than one that meets or exceeds it. A charger that exceeds the max mA will not charge any faster than any other charger that also exceeds the device's max mA regardless of the differences in their source capacity.
So, if that makes sense to you then you should know it ought to be safe to use a powerful charger and that if faster charging results then the stock charger is in fact underpowered for the device it was paired with.
Disclaimer: Any engineer worth his salt is going to current limit the charging circuit on the phone. However, if this were not the case then providing increased charging capacity will most certainly damage the device.
Click to expand...
Click to collapse
Basically youre saying the phone itself wont pull in anymore draw than it knows it can handle. So I guess if it does charge faster than great. Long as it dont fry im happy!
Coming from the s3 which I thought charged really fast. This phone seems to crawl. anyone else think the same?
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It's the opposite if you use the supplied charger.
Sent from my SCH-I545 using xda premium
^^ what he said. 5v and 2.0amps is like double the normal chargers... 2.0amp is crazy fast... from 32% to full in just under an hour
Yup I bought an extra one on Amazon because of how slow my old charger charges it. It's like trying to charge a laptop with a phone charger haha you need the more powerful charger. My car charger claims its 1amp too but I feel like it charges super fast too.
sent from my galaxy s4
Thank you all and good to know. That's one thing I never read about. Gonna have to buy a few spares
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travishamockery said:
Coming from the s3 which I thought charged really fast. This phone seems to crawl. anyone else think the same?
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Click to expand...
Click to collapse
I have the same prob. Charged about 7% in 30 mins (using the supplied charger). Charges fine when I use my N7 charger though. I'm gonna have to check the charger when I get home.
Just for the hell of it, here is my how my charge is going right now:
7% - plugged in at 3:22
21% - 3:31
33% - 3:42
44% - 3:52
57% - 4:04
83% - 4:28
For what its worth I don't have this issue with charging - s4 charges comparable to s3 HOWEVER i am not using stock charging that came with the box, I am using cables i have had from before and sometimes even use the USB to wall plugs from Apple and/or BB or whatever I have had lying around - seems to work well.
With a 5V 2 amp charger it goes like a bat out of he'll, using my thunderbolt's 5V 1 amp charger it's quite slow.
Sent from my SCH-I545 using xda premium
i have noticed that having it plugged into either a car charger or a computer, it does NOT charge very quickly... not to the point where it is annoying but, slow enough to notice a difference...
If i take the cable from the box and plug it into my USB hub (it has it's own power source also) if im using it for much other then file transfers i can still lose power off battery. It just seems to slow the battery drain instead of just charging slower then plugged into the wall with the 5V 2amp plug. Now obviously if I'm not doing much with the phone while on the USB it will charge but much slower then the wall charging
Eric214 said:
If i take the cable from the box and plug it into my USB hub (it has it's own power source also) if im using it for much other then file transfers i can still lose power off battery. It just seems to slow the battery drain instead of just charging slower then plugged into the wall with the 5V 2amp plug. Now obviously if I'm not doing much with the phone while on the USB it will charge but much slower then the wall charging
Click to expand...
Click to collapse
That's to be expected when plugged into a source that's limited to 500 mA.
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---------- Post added at 07:52 PM ---------- Previous post was at 07:49 PM ----------
vue said:
For what its worth I don't have this issue with charging - s4 charges comparable to s3 HOWEVER i am not using stock charging that came with the box, I am using cables i have had from before and sometimes even use the USB to wall plugs from Apple and/or BB or whatever I have had lying around - seems to work well.
Click to expand...
Click to collapse
Bear in mind that the phone will charge faster using the stock cable than it will with other cables.
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My s4 flies on the charger.
Sent from my SCH-I545 using xda premium
Same here...on stock charger my phone charges v3ry quickly. Are you rooted with special ROM? Are you using non samsung charger?
Sent from my SCH-I545 using Tapatalk 2
Ok, there's something else going on here. Maybe its software related.
My S4 will only charge fast on the supplied charger. The cable doesn't seem to matter; I tested a bunch of them. I have an assortment of other 2A chargers and none do better then barely keeping up with power useage; hardly any charging at all. Again, the usb cord doesn't seem to make any difference.
Now, I've read mention of a "fast charge" feature that the kernel developers are "turning on". I haven't found a good explanation of what exactly that means but it appears to me that Samsung tried to make the device only charge at the full rate using their chargers and at a minimal trickle charge rate for all others even if they are capable of the full 2A output.
Then there is the problem of buying extra Samsung chargers since there appear to be a lot of knock-offs that will not get the phone to charge at full rate.
What a stupid thing to be such a PITA.
Anyone have any solid info on this?
just about every samsumg device either needs a kernel hack or an adapter to get fast charge off of a non-samsung charger. you can grab a few of these:
http://dx.com/p/usb-data-charging-extension-cable-for-samsung-p1000-black-91141
and use them with just about any 2amp charger with no problems on my old galaxy tablets or my galaxy note and nexus getting fast charge(nexus even charges faster on the 2amp - hope i don't blow it up!).
Fast charge from my understanding is just turning off the data connection when plugged into a computer. This allows for higher usb charge rates, it also helps certain wireless charging setups. I am coming from a gnex where this was the terminology, I assume it's similar. Fast charge shouldn't do much for you if you are having trouble with 2amp chargers, but maybe in this case Samsung limits through put when it doesn't recognize the charging unit? If fast charge tweaks somehow disable this, then I guess it's possible you would enjoy increase in charge rate though I have no verification on that.
Sent from my SCH-I545 using Tapatalk 2
Well, I have to discount my own theory. I have some off-brand adapter and cable to charge in my car that works great.
I sure would like to know what's going on with the chargers in my house.
kdo23 said:
Fast charge from my understanding is just turning off the data connection when plugged into a computer. This allows for higher usb charge rates, it also helps certain wireless charging setups. I am coming from a gnex where this was the terminology, I assume it's similar. Fast charge shouldn't do much for you if you are having trouble with 2amp chargers, but maybe in this case Samsung limits through put when it doesn't recognize the charging unit? If fast charge tweaks somehow disable this, then I guess it's possible you would enjoy increase in charge rate though I have no verification on that.
Sent from my SCH-I545 using Tapatalk 2
Click to expand...
Click to collapse
There's a problem with semantics going on. Fast charge is exactly what you're used to it being on the GN. What's being referenced here is quick charge, a feature of later Snapdragon SoC's.
Sent from my Nexus 7 using Tapatalk HD
fast charging is rapid charge where near full power is transferred. in the gn2, gnote 10.1, gnex, and gtab10.1 the max i got was ~1600mA with all my 2.1A chargers including the samsung charger. the rapid charge continues to 90% and then switches to trickle - anywhere from 400-900mA til 100%. without the adapter you're stuck at trickle, even at under 90%. some chargers seem to have it built in to rapid charge,but most don't.
i've never gotten a full 2100mA from any charger yet.
you can find schematics on how to build your own adapter in one of these samsung boards. i think there was a very detailed one in the gnote10.1 forum.
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
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todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
U using stock Samsung charger and cable?
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todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
I've found the stock charger that came with my phone doesn't charge very fast anymore. It will sit around 1.2a but with a new charger with a rating output of 2a I've been getting a charging rate of about 1.9
Sent from my SCH-I545 using XDA Free mobile app
Not gonna lie I have been using the iPad charger with a stock cable and that will get it done quick. Try to back up an oem iPad block off amazon or what not and you will notice a difference.
todd3835 said:
Just wondering what amperage people are getting. I get a max of 1.2a even though I have tried other chargers that put out more. Not sure if it's something with my phone or maybe the various chargers I've tried.....
Sent from my SCH-I545 using XDA Premium HD app
Click to expand...
Click to collapse
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
How do tell what amps it charges at? All I can find is what the voltage, using 3rd party apps from the play store of course. My phone charges incredibly slow. Especially if I'm using it during the charge cycle. Hours can go by and it just sits there at 5%.
Sent from my SCH-I545 using XDA Free mobile app
zombolt said:
How do tell what amps it charges at? All I can find is what the voltage, using 3rd party apps from the play store of course. My phone charges incredibly slow. Especially if I'm using it during the charge cycle. Hours can go by and it just sits there at 5%.
Sent from my SCH-I545 using XDA Free mobile app
Click to expand...
Click to collapse
This is what I use: https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Sent from my SCH-I545 using XDA Free mobile app
If you use KT kernel, it shows you in KTweaker the charging current.
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znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
Click to expand...
Click to collapse
I'm running ktoons kernel without fast charge, and I'm getting 1.9
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I'm on safe strap so running a custom Kernal isn't possible. I'm guessing I'm seeing the 1.9a when it's initially waking up from the screen off. I've tried the stock cable, as well as the Amazon one that is 1.9a.
Sent from my SCH-I545 using XDA Premium HD app
znel52 said:
Unless you are running a custom kernel with fast charge I think the phone will not charge at 1.9a unless the screen is off.
Sent from my 4.4.3 GPE'd vzw S4
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The Fast Charge mode on the KT kernel has no impact on AC charge rate, it only affects USB charge rate:
Normally, when you connect to a PC, you get about a 500ma charge rate and the ability to pass data along. When 'Fast Charge' is set, you lose the ability to transfer data, but the 500ma restriction goes away. In practical terms, it means that you should see between 700ma and 900ma as a result.
w/respect to the OP, my experience is weird. When the device was new, I got around 1800ma on stock charger and cable; now, same setup gets me 900-1200 if lucky (even with new battery). When I tried the stock charger with a different (newer) cable, I get around 1600. It's strange that a cable's ability to carry a charge would degrade so quickly (if that's in fact what's happening).
I have no proof, but absolutely believe that kernel can influence max charge rate, because in the past, I've observed max charge rate drop with the release of a new kernel version, then go up again with another release.
Samsung did slow the charging rate in one of the OTAs. People had been complaining about the phones getting too hot.
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its weird for me, when i use my qi samsung galaxy charging pad(wireless charging) i get 1.9a, but when i plug the cord in to charge(wired), i get 460mA. wtf??
methodsofbeyond said:
its weird for me, when i use my qi samsung galaxy charging pad(wireless charging) i get 1.9a, but when i plug the cord in to charge(wired), i get 460mA. wtf??
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What are you using to measure that? Qi isn't capable of charging at 1.9a
The galaxy charging current app..
So you've noticed that sometimes your phone seems to take forever to charge, and other times it seems to charge fine? Let me share some ideas that I've learned through lots of research on this exact subject last year...
I have used the galaxy charging app myself. In my opinion, CurrentWidget is better...looks cooler too. Ha.
So other than software related issues, you need to remember that the speed in which your phone charges is highly dependent on the hardware of 3 things:
1) Power Outlet (including power strips, extension cords, USB extenders, etc.)
2) Power Adapter (I highly recommend Anker's products!!!)
3) MicroUSB Charger Cable (if not using the factory Samsung cable or an Anker one, be sure that it's an 11-pin microUSB, and NOT a 5-pin...they look the same!)
Power Outlets - I know for me, if I use the outlet in my livingroom, it takes SO much longer for my phone to charge than it does in my bedroom. Just try this test! Grab that CurrentWidget app from above and try out some different outlets throughout your house, just to see whether or not the voltage varies. I bet you'll see that this is true!
Power Adapter - You should be using either the factory Samsung charger or a reputable 3rd party charger with the equivalent specifications (5V & 2.1A). However, I actually prefer my Anker charger over my Samsung one! If you're finding that you can't get a good charge, try swapping out your adapter with another one.
MicroUSB Charger Cable - As stated with the power adapter, you should also try to stick with your factory cable if possible. HOWEVER, I have found that to daily connecting and disconnecting of the cable with your phone, they probably receive the most wear and tear of anything else, and therefore may need replacement after some time. Again here, I find that using either my Anker cable or Samsung cable will give me the best charge. This is determined by both the CurrentWidget app and the amount of time it actually takes to get a full charge! Keep in mind that using USB extender cables can drastically lower the voltage to your phone - thus causing a very slow charge.
So basically, I know if I need to charge my phone as quickly as possible, I know I should clear my RAM and recent apps, put my phone on airplain mode, and using my Anker charger, I plug-in at the outlet near my closet door! I figured this all out by using these same ideas I just shared with you! Hope this is helpful!
If you can tell the difference between outlets, you need to call an electrician. Not kidding.
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brizey said:
If you can tell the difference between outlets, you need to call an electrician. Not kidding.
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I doubt that's entirely true. I mean, think of if they're on different circuits, that kind of thing can vary...also, depending on what you have plugged into your outlets can cause lower outputs I'd assume. I'd bet if you used the app I referred to and ran a test at each of your outlets, and reported back here (being honest of course), that you'd see some differences. Anyways, that was far from the point of the post. But thanks for the insight!
calebcabob said:
I doubt that's entirely true. I mean, think of if they're on different circuits, that kind of thing can vary...also, depending on what you have plugged into your outlets can cause lower outputs I'd assume. I'd bet if you used the app I referred to and ran a test at each of your outlets, and reported back here (being honest of course), that you'd see some differences. Anyways, that was far from the point of the post. But thanks for the insight!
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The Samsung power supply is rated for 100 to 240 V @ 0.5 A input. It may be that the power supply is kind of crappy, and varies its output under small variations in input voltage, which is why you see what you see. It really shouldn't...but it wouldn't shock me if it did given that its made for $2 in China. Makes you wonder what would happen if you plugged it into a 240V source. When my wife went to Malaysia last summer to visit her folks, I just put a US to British transformer-less adapter on her Motorola brick and it worked OK plugged into 240V. Maybe the Samsung ones are crappier?
I squared R losses should be reasonably low in household wiring. NEC is 5% drop max at the outlet. And that is like the outlet the farthest from your mains under full rated load. Assuming you live somewhere typical, your voltage at the panel will be 120V+; a lot of time its a few volts over 120. If you have an outlet that is not tripping a breaker go below 100V, you have a problem somewhere. A 20% drop is not normal. Have you put a meter on the outlets with low charge rates?
My friend's OEM s4 charger charges at 1900 ma while my OEM charger only charges at max 1200... Weird how that happens but somehow the cable just stops charging as fast.
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