Develop Bugs

Correct way to recalibrate/wipe battery stats

Does anyone have a link for the thread that discussed the correct way to wipe battery stats when upgrading to a new Rom? I remember it went something like drain dead, charge to full, drain dead again then charge to full and wipe stats. I can't remember the complete process. Thanks for the help.
Sent from my PC36100 using XDA App

I've seen a couple different threads on that here, one saying discharge fully then charge while powered off, and the other saying to do a full charge "conditioning cycle". I did the latter and it seems to have made a difference.
Here's what I did:
Charge the phone fully with it powered on
When fully charged, disconnect cable
After green LED goes off, power the phone off
When phone is fully powered off, reconnect cable, amber charging light should be on
When LED goes green, disconnect cable
Repeat previous two steps 10 times
After 10th cycle, boot into recovery and wipe battery stats.
I am using Amon Ra recovery which has the wipe battery stats option under the Wipe option. I never did this when I had Clockwork recovery installed, so I don't know if the option is in the same place.
Being an electrical engineer, I find this business of battery conditioning interesting, along with the Ni-Cd "memory" vs. Li-Ion "no memory" issue. If anyone has found a decent physics-based explanation as to why these things do or do not have any basis in fact, I'd appreciate a link. Yes, I'm too lazy to Google it at the moment.

Hmm, I may have to look into this again. I charged my phone all night (powered off) and unplugged it this morning. I did nothing with it this morning but turn it on and look at it, then put it in standby (quick press of power button). It lost 16% of charge in less than 2 hours!
I'm running BS1.2 with the Baked1 (low voltage/best battery) kernel.
Damn, just installed System Panel and found that my CPU is at 100% constantly!

I'm trying this now. The longest I've pushed my battery was 22 hours... and that was with 39 minutes of screen on time, lol. In standby almost the entire 22 hours....

Ok, I believe my issue was related to a camcorder problem, my CPU usage has dropped back to normal levels after fixing that separate problem. After my battery recharges fully I will see what happens with the charge.

the other methods to do "calibrate your battery" (which isnt really calibrating the battery but the battery stats of the phone so it can accuratly judge when it stops and starts charging)
1) charge the phone to full
2) unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
3) charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
this should reset the battery stats.
the last method is one from HTC
1)Charge the phone for 8 hours uninterupted with power on
2) turn off the phone and charge for an additional hour
3) turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
all 3 methods listed should help. I personally dont like the x10 method because it has the potential and basically over charges the battery to make sure it is acctually at a full charge. It is much faster then the other 2 methods though so to each there own.

Dont waste your time on...
plug/unplug 10 times. It really doesn't recal the battery.
the unplug/plug 10 times.
1. Phone on...charge until green light comes on. Immediately unplug and turn phone off.
2. Plug phone back in until green light comes on again. Immediately boot into Recovery and wipe battery stats.
3. Use the phone on battery until dies.
4. recharge phone to 100%
You are good to go!

If I tether during the day (5+ hours) a lot, is it bad on my battery? Isn't that like a constant charge or does once the LED turn green it stops trying to charge?
Thanks.

fldash said:
If I tether during the day (5+ hours) a lot, is it bad on my battery? Isn't that like a constant charge or does once the LED turn green it stops trying to charge?
Thanks.
Click to expand...
Click to collapse
the evo doesnt do a trickle charge so when the light turns green it stops, this is why you will almost always drop 1-5% battery rather quickly.

Are you sure? My light has been green for a while, and my phone battery status says 'Full'.

fldash said:
Are you sure? My light has been green for a while, and my phone battery status says 'Full'.
Click to expand...
Click to collapse
There's a lot of confusion over how the battery / charging circuit works and how it reports. My advice is to just charge until it's green and full, then unplug it. If you leave it plugged in all night, unplug it for 10 mins in the morning, then plug it back in to top off.

That doesn't really help me SilverZero, my question is only if leaving it tethered (which means connected to USB) is bad for my battery.

Well on mine i would check it every once in awhile and i would see that once it get downs to under 90% that it would charge again till it recognized that it was full again. So based on that i dont think you should have to worry about it. It seems to only draw the charge when needed. I also leave mine plugged in alot when im home so its good to go when i leave and havent noticed a loss of battery life at all.

You guys don't want the charger to trickle charge. Li-Ion does not accept overcharge, even 0.01C (15 mA on the stock Evo battery) will cause it to vent and probably combust.

So does "calibrating the battery" calibrate the phone or the actual battery?
I ask because I have 3 spare batteries, wondering if I have to do this for each of them??? They are all standard size, one of them OEM

[HOWTO] Battery meter accuracy

I noticed something about the battery meter.
If you power on your phone when the charger is plugged in, the battery meter shows a higher value.
If you power on your phone when no charger is connected, the battery meter shows a lower value.
And these values stay for as long as your phone is not rebooted. My guess is, the value without charger plugged in (lower value) is more accurate.
So, if you want to make your battery meter more accurate, try this:
- Disconnect your phone from the charger
- Power off the phone
- Power on the phone again (phone must be disconnected from charger)
- After phone has booted into Android, plug the phone into USB/charger to charge it again
If you could try this out and see if the observation is always true, then maybe we should make this procedure standard to get a more accurate battery meter reading.

So this may have caused the fact that my phone keeps telling me, while charging, the battery is fully charged however it says 95% as soons as its unplugged

Power off the phone and connect charger while it's off, wait for the 100% sign on the fully green battery, then unplug the cord and connect it again, you can do this a couple of times. And resetting the battery stats should also help in some way.

opica said:
Power off the phone and connect charger while it's off, wait for the 100% sign on the fully green battery, then unplug the cord and connect it again, you can do this a couple of times. And resetting the battery stats should also help in some way.
Click to expand...
Click to collapse
What I'm suggesting is a bit different.
Power off phone.
Power on phone again, without plugging anything in.
After phone has booted, plug in charger.
EDIT: I notice this difference in battery meter reading tends to happen only with the *real* charger, and not when connect to a USB port on a PC.

That is right hardcore. This also refers to post-flashing boot.
I always disconnect device as soon as flashing procedure completes.

hardcore said:
I noticed something about the battery meter.
If you power on your phone when the USB charger/cable is plugged in, the battery meter shows a higher value.
If you power on your phone when no USB charger/cable is connected, the battery meter shows a lower value.
And these values stay for as long as your phone is not rebooted. My guess is, the value without USB plugged in (lower value) is more accurate.
Click to expand...
Click to collapse
Hey,
Heres whats happening:
Lithium-ion batteries dont like it when you charge them while full. It wears them down. So to preserve batterylife it charges untill full, then stops charging completely. When it droppes down to far, it'll charge again for a bit. The phone will show full, in reality it'll be a little less. When you unplug it will drop down quickly to a more precise value. Bump-charging (disconnect, reconnect charger) works, however you are wearing the batterylife down. Could be you dont care, so it'll be youre own choice.
Older phones do not do this. They charge till full, then trickle power continuesly so it'll always be full when disconnected.
Hope this helps.

weirder said:
Hey,
Heres whats happening:
Lithium-ion batteries dont like it when you charge them while full. It wears them down. So to preserve batterylife it charges untill full, then stops charging completely. When it droppes down to far, it'll charge again for a bit. The phone will show full, in reality it'll be a little less. When you unplug it will drop down quickly to a more precise value. Bump-charging (disconnect, reconnect charger) works, however you are wearing the batterylife down. Could be you dont care, so it'll be youre own choice.
Older phones do not do this. They charge till full, then trickle power continuesly so it'll always be full when disconnected.
Hope this helps.
Click to expand...
Click to collapse
I'm not talking about the usual Li-ion full-charge effects. Also it may not be true that other phones don't do this. For sure, many laptops do this - after the battery charges to 100%, they won't charge the battery until it decreases to a certain level, say 95%.
I'm referring to the difference in battery meter reading if u boot the phone while connected to the wall charger, vs booting the phone when it's disconnected from the charger.

What you say is right, I am used to power OFF my phone & charge it at night, & when I get up, switch it ON while still plugged in. I must make it a point to remove the cable before I switch ON.

I noticed this many months ago and it persists even after flashing many different firmwares. It actually comes in handy some times. For instance when my battery is running low and i need to step out i simply plug in the charger, power off then power back on. Phone instantly jumps 30% or so. But generally i tend to power on without the charger attached so as not to stuff up the battery stats.
Sent from my GT-I9000 using XDA App

Anyway this behavior is not correct.
Samsung changed recently battery drivers in JPX sources and the problem is still persistent. I suspect it might be related to wrong battery voltage measuring point (hardware design flaw? although most problems with sgs are/were software related) or result misinterpretation.
Or their Q/A team is so clueless that they didnt notice that.

hardcore said:
EDIT: I notice this difference in battery meter reading tends to happen only with the *real* charger, and not when connect to a USB port on a PC.
Click to expand...
Click to collapse
I just tested this. 5% battery. Reboot with usb plugged in. 50%battery. The battery also seems to drain really fast after the reboot.
I am plugged in using original usb cable in a usb on the front panel of my pc...
Edit: im still plugged in and it's going down... i boot with usb at 50% leave it in and while charging the battery goes down... i left it in and now it's going 49...48...47 while charging... wtf lol
Sent from my GT-I9000 using XDA App

Lightarrow said:
I just tested this. 5% battery. Reboot with usb plugged in. 50%battery. The battery also seems to drain really fast after the reboot.
I am plugged in using original usb cable in a usb on the front panel of my pc...
Edit: im still plugged in and it's going down... i boot with usb at 50% leave it in and while charging the battery goes down... i left it in and now it's going 49...48...47 while charging... wtf lol
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
My guess is this is because the actual level of the battery is 5%, and 'cause it's plugged in it's saying 50% for some strange reason. So really you're charging from 5% up to 50% (and eventually more, but that aside), and I think the phone is averaging between your actual battery level and the 50% every time you go up 1%? Just my guess.

johanaikema said:
My guess is this is because the actual level of the battery is 5%, and cause it's plugged in it's saying 50% for some strange reason. So really you're charging from 5% up to 50% (and eventually more, but that aside), and I think the phone is averaging between you're actual battery level and the 50% every time you go up 1%? Just my guess.
Click to expand...
Click to collapse
Yeay that is what im thinking too weird stuff.
@hardcore : just tried your suggestion. I shut down with the cable plugged in. Remove it. Reboot. But my battery is still at 47... ill try to go into cwm to see if that triggers something. Or maybe remove the battery and insert it again...
Sent from my GT-I9000 using XDA App

Ok. I tried this : removed my battery, waited 5 seconds, reput my battery, reboot all with charger unplugged. Battery went from 47 to 52. So this had no effect.
Then i shut down the phone, used 3br to get into recovery (cwm) did nothing except select reboot phone now and the phone rebooted, now 12% battery.
Btw using all tweaks in your kernel except tun.
Weird stuff...
Sent from my GT-I9000 using XDA App

noticed this months back too but didnt think much about it.
i just figured the software is reading the higher voltage during charge and reporting it wrong during boot.
*could be wrong
EDIT: and the diff is quite big, increase of 20-30%

hardcore said:
What I'm suggesting is a bit different.
Power off phone.
Power on phone again, without plugging anything in.
After phone has booted, plug in charger.
EDIT: I notice this difference in battery meter reading tends to happen only with the *real* charger, and not when connect to a USB port on a PC.
Click to expand...
Click to collapse
what @weirder post is the true fact about the lithium ion charge process. your charging method is called bump charging. but that way of charging the juice wear off the battery life sooner than normal charging..

I've been checking out the battery meter source code, and I think the battery level is calculated *only* from the battery voltage. Which is quite inaccurate, compared to laptop batteries which keep track of the charge, etc.

hardcore said:
I've been checking out the battery meter source code, and I think the battery level is calculated *only* from the battery voltage. Which is quite inaccurate, compared to laptop batteries which keep track of the charge, etc.
Click to expand...
Click to collapse
This could be improved by using its temperature. Since the SoC is a function of temperature, charge history, and current evolution over the time.
[[]]

I tried the bump charging till the meter says 100% and right after unplugging from the charger the meter reads 98%. I let the battery drain up to 96% and connected my phone into a usb port of my PC and when the meter say its 100% charged, i disconnected the phone from the usb port and wallah...it stays at 100% charged and it has been at 100% even after 15 minutes...

I really don't recommend bump charging. You risk damaging your battery by overcharging. Or worse, making it blow up due to overcharging! I know it sounds paranoid but you never know...

Battery won't charge past 98%

I have now done three cycles now drained to 1% and put on charge over night when I unplug and check the phone it says 98% and drops 2-3% within 5 mins of use. But if I plug it back in it will then go back to 100%. Anyone else?

Martinp86 said:
I have now done three cycles now drained to 1% and put on charge over night when I unplug and check the phone it says 98% and drops 2-3% within 5 mins of use. But if I plug it back in it will then go back to 100%. Anyone else?
Click to expand...
Click to collapse
There have been threads about this already. Batteries, once charged fully, cannot 'keep charging', so they will stop charging until it is low enough to charge again.
This protects the battery from all sorts of nasty and evil things.

^ precisely. Batteries shouldn't be pegged at 100% and continue to be charged. The firmware lets it drain down then charge up again. You can just get 'unlucky' and unplug at a point where its discharging and at 98%.

I remember that happening with the Nexus S. I'm thinking it must be a Samsung thing. It's just one of those weird OEM things like, Motorola phones measuring the battery in 10% intervals.

All manufacturers charge their batteries this way but there are many ways to mask that process. People apparently want to see a fully charged phone when they plug it off the charger. They don't mind that their phone drops to something between 95% and 100% in a matter of minutes as long as it's "full" upon disconneting. Seems Google just displays the correct charge instead of pretending to be on 100%.

gokpog said:
All manufacturers charge their batteries this way but there are many ways to mask that process. People apparently want to see a fully charged phone when they plug it off the charger. They don't mind that their phone drops to something between 95% and 100% in a matter of minutes as long as it's "full" upon disconneting. Seems Google just displays the correct charge instead of pretending to be on 100%.
Click to expand...
Click to collapse
Pretty much. The G2 with stock firmware (and from what I remember with the Evo 4G w/ stock), HTC charges to 100%, discharges back to 90%, and charges back up again. etc.. The LED charge indicator turns green at 90% (so according to them, anything about 90% is a "full charge").
You can see this in regular use. There are days where my phone sits at 100% for hours, and others where it only takes an hour to tick down do 99%, even with the same usage. Just depends what "state" the battery is at when you pull it off charge in the morning.

Thanks guys im happy if its one of those oem quirks.

Martinp86 said:
Thanks guys im happy if its one of those oem quirks.
Click to expand...
Click to collapse
If by "quirks" you mean honesty then yes.

Martinp86 said:
Thanks guys im happy if its one of those oem quirks.
Click to expand...
Click to collapse
Its not a quirk, they're just trying to preserve your battery health.

reset battery stats of a wp7 device

Note : involves hard resetting device and loss.of data
1) fully drain the battery. Make sure the phone cannot turn on
2) hold the volume up and down buttons, connect to charger and turn on the charger . U will get a white screen . Press vol down to hard reset
3) charge the phone till led is green
4) still on charger , press and hold the vol up , down again turn off the phone the phone will restart again with the white screen, do a hard reset
Note that u have to do this this in a continuous sequence , so always have the power socket turned on as it makes the job easier .
If u missed going to the white screen, let the phone boot normally and repeat again when the led light is green

Its 21 hours and I am on 31% with mild usage, battery saver on
Medium brightness.
Location , BT off
2 live accounts

is there no other way to reset the stats?

bilbo_b said:
is there no other way to reset the stats?
Click to expand...
Click to collapse
don't think so
the battery indicator problem is cause by the os reading the full charge incorrectly .

Magpir, remember, each another thread you create regarding batteries, resetting, formatting them, the bunny dies!

Snake. said:
Magpir, remember, each another thread you create regarding batteries, resetting, formatting them, the bunny dies!
Click to expand...
Click to collapse
He definitely should be banned for these dangerous and useless "advises". He is "battery maniac" - never listen to other or just to common sense and still trying, trying, trying...
Let's everybody report to moderator to stop this guy.

Reported..

Why get him banned? It's not like he is hurting you in any way. He is sharing what he has found and like with all hacking advice it's the readers choice to take the risks on thier own device. If you don't like what he is saying don't listen.

I am on my 2nd full charge the battery is holding great

This is tell the os the correct values for 0% and 100%

voluptuary said:
Why get him banned? It's not like he is hurting you in any way. He is sharing what he has found and like with all hacking advice it's the readers choice to take the risks on thier own device. If you don't like what he is saying don't listen.
Click to expand...
Click to collapse
He found NOTHING (because he is technically unskilled and has no idea how battery charge works in WinCE, what is the "battery controller" and how it works etc.) but some of his "advices" (like keep battery in refrigerator or do a lot of hard resets or do some senseless registry changes) can hurt unsophisticated newbies. So I consider it's my duty.
XDA is a forum for developers, not for "magical rituals of voodoo shamans"...

sensboston said:
.... XDA is a forum for developers, not for "magical rituals of voodoo shamans"...
Click to expand...
Click to collapse
^--This made me LOL
I see what you are saying, although I still don't agree about the banning. If someone is dumb enough to do some of the dumb things they might read here then well serves them right.

sensboston said:
He definitely should be banned for these dangerous and useless "advises". He is "battery maniac" - never listen to other or just to common sense and still trying, trying, trying...
Let's everybody report to moderator to stop this guy.
Click to expand...
Click to collapse
His method may be unnecessary and the results debatable, but I would really hope a couple of resets and fully charging the battery wouldn't be dangerous. If so there would be an awful lot of people with WP7 phones burning their houses down.
Li-ion batteries have a chip in them that will disable the battery if the voltage gets too high or low, and the normal procedure for charging one watches the voltage and current to make sure it does not overcharge. The battery stats are used to try and give you an accurate reading of how much power is left, but it shouldn't affect how it charges.
Short of modifying the kernel to continue trickle charging past 100% (stupid IMO but yes "SBC" kernels exist-and there have been burnt batteries), the best you can do is what was recommended by HTC. Wait until your phone is fully charged and the light turns green, then unplug it for 30-60 seconds and plug it back in until the light turns green again. After once or twice unplug it and leave it unplugged until the battery dies and the phone turns off. Do that a few times and it'll reconfigure the battery stats. You can also use that trick of unplugging for a few seconds before charging more to top it off if it's been at 100% and on the charger for awhile.
See: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

xHausx said:
His method may be unnecessary and the results debatable, but I would really hope a couple of resets and fully charging the battery wouldn't be dangerous. If so there would be an awful lot of people with WP7 phones burning their houses down.
Li-ion batteries have a chip in them that will disable the battery if the voltage gets too high or low, and the normal procedure for charging one watches the voltage and current to make sure it does not overcharge. The battery stats are used to try and give you an accurate reading of how much power is left, but it shouldn't affect how it charges.
Short of modifying the kernel to continue trickle charging past 100% (stupid IMO but yes "SBC" kernels exist-and there have been burnt batteries), the best you can do is what was recommended by HTC. Wait until your phone is fully charged and the light turns green, then unplug it for 30-60 seconds and plug it back in until the light turns green again. After once or twice unplug it and leave it unplugged until the battery dies and the phone turns off. Do that a few times and it'll reconfigure the battery stats. You can also use that trick of unplugging for a few seconds before charging more to top it off if it's been at 100% and on the charger for awhile.
See: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
since when hard resetting and charging spoils the battery?
hello there.
after i have done this my battery lasts longer than before

Magpir said:
since when hard resetting and charging spoils the battery?
It shouldn't any more than normal wear and tear.
hello there.
after i have done this my battery lasts longer than before
Click to expand...
Click to collapse
It shouldn't any more than the normal wear and tear. The extremes from being fully charged or completed discharged can cause it to wear faster, but if you want to reset your battery stats try just fully charging and then leaving it unplugged until it powers down. The reset may not be needed.

xHausx said:
His method may be unnecessary and the results debatable, but I would really hope a couple of resets and fully charging the battery wouldn't be dangerous. If so there would be an awful lot of people with WP7 phones burning their houses down.
Li-ion batteries have a chip in them that will disable the battery if the voltage gets too high or low, and the normal procedure for charging one watches the voltage and current to make sure it does not overcharge. The battery stats are used to try and give you an accurate reading of how much power is left, but it shouldn't affect how it charges.
Short of modifying the kernel to continue trickle charging past 100% (stupid IMO but yes "SBC" kernels exist-and there have been burnt batteries), the best you can do is what was recommended by HTC. Wait until your phone is fully charged and the light turns green, then unplug it for 30-60 seconds and plug it back in until the light turns green again. After once or twice unplug it and leave it unplugged until the battery dies and the phone turns off. Do that a few times and it'll reconfigure the battery stats. You can also use that trick of unplugging for a few seconds before charging more to top it off if it's been at 100% and on the charger for awhile.
See: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
sorry though u cant do this with wp7 phones. i beleive its for android

Magpir said:
sorry though u cant do this with wp7 phones. i beleive its for android
Click to expand...
Click to collapse
The custom kernels are not available, but everything else should be the same or similar.

xHausx said:
The custom kernels are not available, but everything else should be the same or similar.
Click to expand...
Click to collapse
firstly its not the same, u cant charge wp7 phone when its off
the battery problems in wp7 phones especially hTC is well documented

Magpir said:
firstly its not the same, u cant charge wp7 phone when its off
the battery problems in wp7 phones especially hTC is well documented
Click to expand...
Click to collapse
Well, you can plug it in and turn it on to charge then.
If you are wanting to allow charging while it's turned off I know how Android and iOS accomplish it, but I doubt it would be easy to do on a WP7 device.

xHausx said:
Well, you can plug it in and turn it on to charge then.
If you are wanting to allow charging while it's turned off I know how Android and iOS accomplish it, but I doubt it would be easy to do on a WP7 device.
Click to expand...
Click to collapse
there is no way u can do this on wp7 phone

Phone shuts down at 14%

So, I bought another battery. Will this sort it?
Also, what's the usual procedure?
Should I charge the battery to full in the phone (turned off) then boot, set up, then charge again and reset battery stats?

The problem is that the battery control chip doesn't take into account that the battery ages.
Resetting battery stats or charging while turned off will only clear the stats you see in the settings menu. This guide will make your battery drain to 0% again: http://forum.xda-developers.com/showthread.php?t=1534892
I don't know what a new battery will do though.

I gathered that, but as the phone is going to a new user (my stepson) we got him a new battery anyway
I just wondered what the correct procedure is. I know you need to do a first charge with a new battery, as with a new phone, however, this phone obviously has a working ROM already on it.
So, the phone is charging now, switched off. Should I turn it on, use a little, then use the battery calibration app to delete the stats and then drain to 0%?

Kryten2k35 said:
I know you need to do a first charge with a new battery, as with a new phone
Click to expand...
Click to collapse
Well, that assumption is probably inherited from the NiHM batteries in the past, because it's not needed with Li-Ion batteries. In fact charging to 80% is better than charging to 100% and keeping it plugged in.
You can read more about it here and here.
Kryten2k35 said:
So, the phone is charging now, switched off. Should I turn it on, use a little, then use the battery calibration app to delete the stats and then drain to 0%?
Click to expand...
Click to collapse
Just charge it and use it for a full cycle. If it shuts down at 15%, you can try the battery calibration from the thread I mentioned above. If it doesn't, you're battery capacity is the same as the one the battery chip has calculated, which is good.

So, why does the first charge take so long?
This thing is still charging and it's been on the charger for 3 hours, whereas usually it'd be charged fully by now.
Been like that for every Li-Ion battery I've ever had (including my S3, took around 6 hours to charge, usually takes 3).
EDIT:
Just to clarify, I don't intend on leaving it past the green light. As soon as it says it's full I'll be taking it off charge and not trying ot overcharge it. But I still have the orange charging light after 3-4 hours.

To be honest, I don't know. Maybe it's a safety to prevent overcharging. Coincidentally, I've got exactly the same issue now. I asked about it in the calibration thread. I suppose it's normal, but I'm not sure about that.

Kryten2k35 said:
So, why does the first charge take so long?
This thing is still charging and it's been on the charger for 3 hours, whereas usually it'd be charged fully by now.
Been like that for every Li-Ion battery I've ever had (including my S3, took around 6 hours to charge, usually takes 3).
EDIT:
Just to clarify, I don't intend on leaving it past the green light. As soon as it says it's full I'll be taking it off charge and not trying ot overcharge it. But I still have the orange charging light after 3-4 hours.
Click to expand...
Click to collapse
my battery took just over 6 hours to charge the other day from completly dead
Sent from my HTC Desire