Database Users

Says fully charged... Then 98%?

Plugged into the supplied wall charger, my phone will give the message that it's fully charged. I unplug it and it immediately goes to 98% and then if I plug it back in it goes back to 100%.
Has anyone else seen this? Is it a bad battery?

After it says full turn off your phone and let it charge for an additional hour, then turn it back on.

I would not encourage charging your phone while it is in.
I have not noticed this, but on my g1 it would take a bigger hit, but that phone got like 3 hours battery life, so it may have been accurate.

Does anyone know if it stops charging the battery when it gives that message that it's fully charged? If I unplug it and plug it back in it will top off the battery and I get 100%.

This occurs when the OS is not calibrated to the battery.

hah2110 said:
This occurs when the OS is not calibrated to the battery.
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The OS is reading what is called a surface charge,
After you take the charger off the surface charges last from a few seconds on up to 2 mins. to get a full charge you have to let it sit for another hour or so with the phone off.

phone thinks it is charged.

I dont know what caused this to happen, because i havent flashed anything new on my phone or made any changes for like a week now, but today when i got home from school and plugged in my phone, a few seconds later i get the messaged telling me that it is fully charged, even though the battery on the status bar says it is at 20%. i tried wiping the battery stats in cwm but it didnt fix it.

Possibly dirty usb port/connector. Otherwise, turn the phone off to charge it. If it still doesn't charge right, it could be that the battery went bad.

oh lol i cant believe i didnt realize this. i just got a new keyboard and i had my phone charger plugged into the usb port that is on the back of they keyboard, i shouldve known it cant charge off of that i was being stupid hah. plugged it into the computer and it works fine.

thefunkbot said:
oh lol i cant believe i didnt realize this. i just got a new keyboard and i had my phone charger plugged into the usb port that is on the back of they keyboard, i shouldve known it cant charge off of that i was being stupid hah. plugged it into the computer and it works fine.
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The phone will say it is charged when you plug it into a USB port with too low of a current rating.
I do not know what the cutoff threshold is, however I have a variety of USB ports and adapters that I charge my phone off of and some of them work great, but a couple of them have extremely low current ratings and the phone just says "charged" because it is not seeing enough power go into the battery.
This might be considered a bug, if there was a way for the hardware / charging drivers to measure the strength of the USB port the phone is attached to instead of solely looking at the current flowing into the battery.

Hrm. Weird that it would report charged when it doesn't get enough current to properly charge.
On a related note - I would also recommend doing a deep drain / charge cycle about once per month, to calibrate the battery charge sensor.
- Charge your phone to 100%.
- Then discharge it down to 0%.
- Then charge it back up to 100% via the OS.
- Turn the phone off, and keep it plugged in to the charger. A green battery icon will appear, and indicate when the battery is fully charged to 100%.
- Reboot the phone into recovery, and wipe battery stats.
Doing this about once per month for any Li-Ion battery will help calibrate the battery charge sensors on the device, giving you more accurate battery charge stats.

[Q] How to calibrate battery when using Magldr?

I have just been depleting my battery but due to the magldr bug and not being able to charge whilst off it is a bit of a problem. Can someone tell me how to do it knowing that if the battery depletes fully I may not be able to get back into the device without an external charger?
Little puzzled but would like to get the correct battery stats for my battery

You can just recharge your phone with a regular wall charger, even when the battery is fully drained. You'll just have to remove/insert the battery before booting after it's charged.

I had read somewhere that the phone doesn't actually charge when off even though the LED comes on? Something to do with Magldr

I have never heard of that actually. I recalibrated my battery like that yesterday by the way, no issues at all.

So charge fully using wall charger with phone off?, delete file, allow to drain to the point it turns off. Then plug in using mains charger and boot ....carry on charging until full

There's a lot of different guides on this, I started with a complete drain, full recharge, delete file, complete drain. The 2nd charging shouldn't matter.

I'm pretty sure magldr actually does charge, but not very fast. I've seen my percentage go up while stuck in the magldr charge. It's not worth the trouble though. Just wait for the magldr update and hope it fixes it. It would really suck if you ran down your battery to calibrate and end up having to buy an external charger just to get it going again.

I really think there's a lot of false rumours about this charging thing. Does anyone actually have an example of anyone not being able to charge anymore with Magldr? I have yet to encounter one. Of course, prove me wrong if you can, I may very well have missed it.
My battery charged just as fast as it was supposed to. Except for the battery hop, everything went smooth as butter, and I'm not even using the latest Magldr (1.10).

Battery problems already...

Ok so my phone will not charge over 60%. Anyone else having a problem? Going to go back to AT&T and swap batteries to see if it changes anything.
Is there a way to clear the battery memory? I have tried to run it all the way down, then back up but it hasnt changed anything.

Mine wont turn on unless its above 5%, even if plugged in to the wall. I thought it was a brick, doesnt look like it charges well while powered on.

Mine wouldn't charge past 50% most of yesterday. I plugged it in to the wall for a few hours and left it alone. I returned and it had started charging. It also charges very slowly for me over USB.

nowise said:
Mine wouldn't charge past 50% most of yesterday. I plugged it in to the wall for a few hours and left it alone. I returned and it had started charging. It also charges very slowly for me over USB.
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Dont use the phone while its charging.. it will take forever.

I wonder if the charger can't supply enough juice to the battery.
It does have the biggest battery of any current cell phone.

Has anyone with these issues actually charged the phone while it was off?
I fully charged the phone powered off as soon as I opened the package and I havent had a problem charging at all..

I wonder if anyone knows what apps are active and syncing in the background when the screen is blank? On my previous myTouch 4G (not-so dearly departed), I would start the day with a fully charged battery. For an experiment, I did not use the phone all day until 5pm. When I unlocked it at 5, I had 30% charge left. So where did it go?
I had power saving on, and all social network updates turned off.

Phone wont charge over 85%

Hi all.. My Evo Shift 4G seems to have developed a charging issue.. I'm not sure if the phone is not reading the voltage from the battery properly or what.. Basically, my phone will not charge over 85%... In other words -- it never reaches 90%+ on the phone, which would typically cause the charging indicator to change from amber to green.
I've watched what the phone supposedly sees with 'Battery Monitor Widget'. Currently, the phone has been on the AC charger for about 7 hours... The phone reports 77% charged, 32.1 degrees C for the battery, 4024mV. I've watched it during the charge cycles, and when the battery is low, the current is definitely being applied to the battery -- around 500-600 mA. When it gets close to 70%, however, it starts ramping down the current.. Right now, at that 77% level, it is showing 0mA being applied to the charging circuit.
I have 3 batteries -- two HTC original batteries, one about 2 weeks old, the other from March.. I also have a 3rd party battery.. All of the batteries behave the same in MY phone.. If I throw the batteries into a couple of friend's HTC phones (one has a Hero, the other a MyTouch 4G) -- their phones report the charge at 100%.
I also have an external charger -- if I charge the batteries in that fully, my phone shows 85% charge, while my friend's phones will show the batteries at 100%. Likewise, if I put their batteries in my phone once theirs are fully charged, my phone will show it at 85%.
Anyone know how or if I can correct this?
Thanks,
Rick

Have you tried clearing the battery stats and re-calibrating?

Ron Overdrive said:
Have you tried clearing the battery stats and re-calibrating?
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I would suggest you do that.
Your phone would have to be rooted though.
Evo SHIFT

Enraged21 said:
I would suggest you do that.
Your phone would have to be rooted though.
Evo SHIFT
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It is rooted.. I get the same behavior on CM7 or the rooted OTA 2.3 update by x99..
I've tried clearing the battery stats.. That has not worked.. I believe it comes down to a problem with how my phone is reading the voltage of the battery..

Worked for me...
I had the same problem but the it could charge to 93ish% percent, not 85. I fixed by clearing the battery stats, setting the screen to never go off, and left it on overnight (while I'd been using it all day), recharged it to full while it was off the next morning, and unplugged the charger and reinserted it until when I could plug it in starting with the light green. Following, I turned it on while it was still plugged in, downloaded the battery calibration app from the market, and calibrated it.
Afterwards, I've been able to get the same outrageous battery life that others claimed they got on roms like evervolv and miui, and been able to charge to full. See if this works for you.

Have you tried a different charger? Say if you are using the wall try a usb or if using a usb try a wall. Just a suggestion don't know if it'll work.
EDIT: Looks like I need to follow my own rules and read everything fully. Sorry for the ignorant post it'll prob be no help!

FdxRider said:
Have you tried a different charger? Say if you are using the wall try a usb or if using a usb try a wall. Just a suggestion don't know if it'll work.
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I've tried charging via a number of different chargers:
1) HTC AC Charger (5V/1A)
2) Computer USB (5V 500mA)
3) Palm Pre AC Charger (5V/1A)
4) Palm Pre Car Charger (5V/1A)
5) Aftermarket AC Charger (5V/1A)

I think there may be a problem with CWM. I tired the wipe battery stats a few times (7) and it seems like it didn't do anything. Then I downloaded an app from the market called battery calibration, wiped with the app. I think it actually worked with the app, as my run times went from about 8-9hrs to well over 24. Hope this helps - Viperspike
From what i understand, charge to 100%, turn phone off and charge a little more, reboot, wipe batt stats and unplug. Run all the way down to zero (phone shutdown) and restart one more time (it should immediately turn off) Then plug in the charger, and reboot. Once on the charger make sure it charges uninterrupted until it reaches 100% the first charge.

Thats the problem.. I can never get anywhere near 100% -- 85% is the top.. At that point current drops to 0mA and the charging circuit turns off.
I did send a support request to HTC.. This is their response:
You were having issues with the battery life on your HTC EVO Shift 4G. You mention that you have tried another battery but you cannot get the LED indicator light to turn green or the charge percentage to go above 85%. You state that you have tested your two batteries in a friend’s MyTouch 4G and HTC Hero. Both devices show 100% when there is an indication of a full charge. Unfortunately, there might be another hardware related issue causing this to occur so I would suggest you consider a repair request for your Android device.