Develop Bugs

Battery Charged but device doesn't power :'(

Hey guys,
i have a Vodafone VPx now and all has been great, however yesterday it reckoned the battery charged from 8% to 100% in 10 mins, i left it on the cradle over night, and now the device doesn't show any signs of life apart from a red charging indicator. I took the battery out and metered it, shows up at 3.72 Volts, so battery holds charge. What can i do to get the device to power again?
T.I.A
RJ

I'm not an expert but I would suggest to leave the device in the cradle and try to boot it when charging it. In this way you can decide whether it's a battery or some other malfunction. Maybe the internal backup battery needs to be replaced, but I don't know if it would let the battery indicator LED to blink...
I replaced my battery because it showed that it's fully charged but when uncradled the device won't connect to bluetooth devices or regularly drops the connection, it even resets itself although the indicator displaying full charge. Now everything is OK. You may consider buying a new battery if it's older than 2-3 years, but first test if that causes this behavior.

hi,
actually i'm experiencing the same thing..
my BA if used to connect to wifi, not more than 5 minutes it will hang with the screen goes blank.. so is it because of my internal back up battery that needs to be replaced or my main battery that need to be replaced?
FYI, backdays before, i got notification that my internal battery runs dry..

Ive just bought a BA off ebay and it came with 2 batts, but 1 of the batts keeps causing the BA to turn off evern if the batt is fully charged.. odd hey?

speedy2009, I think that one was the original battery bundled because it has no value any more so the seller sent it with the machine, all in all it's not a bad device for it's years.
jilaxzone, don't know how to test this, because sometimes the device gives false alarms, I would take it to a PDA shop and let them replace the internal battery as this is cheaper than the main battery.

Also Ive figgered out that if the backup battery is low, it gets charged up from the main battery.
Should everything be lost from the memory once the backup battery runs out? Cos I did try this morning, taking the main batt out and left the phone for about a hr. When I put the batt in, even tho windows said the backup batt was completely empty, it still had all my info in windows??

Hi, the backup battery is responsible for the time and date. The other functions of it are unknown to me. Fortunately the ROM storage is not lost when the battery drains completely

misi2096 said:
Hi, the backup battery is responsible for the time and date. The other functions of it are unknown to me. Fortunately the ROM storage is not lost when the battery drains completely
Click to expand...
Click to collapse
If thats the case theres no real reason for a backup batt cos it only takes a few secs to alter time and date, like on a normal mobile phone.

[Q] Instant discharge.

So, I'm on my Evo today, playing a game (Air Strike). My battery is at 93% when I picked the phone up to play, and the phone is plugged in. Suddenly, with no warning what-so-ever, my phone shuts off. Of course a mini-freak out and many "wtf's" ensue. No warning, no signs, even the led went off. I pulled the battery, put it back, then plugged the phone in again. After that it gave me the blinking light indicating the battery was too low to turn on. After a few minutes charging she came back on and battery was at 5%.
How the hell does a battery go from 93% to 0% in less than 5 minutes, and give no warning at all?? Anybody else ever have this problem?

Wow I've have never heard or that happening before. Maybe a glitch in the battery stash? Did it take awhile to charge up to 100%? Can you reproduce the issue again?
Sent from my EVO (CM 6.1.1) using XDA App

I had this problem with my older phone once. The battery itself may have a problem or your phone is not getting charged properly.
Try These :
1) Try charging the phone overnite from the Wall charger (Not through USB of your computer)
2) If the above does not work, and you have access to another evo battery, then try using that.(try using a friends battery and charger for a day. ) (Ofcourse needless to say the charger and battery must be for Evoonly )
In my case, my phone started working fine again after getting my battery & charger replaced.

Probably shouldn't worry about it too much just yet. Could be something as simple as your battery meter was mis-calibrated. The meter itself is software so it can easily be wrong/off. If it continues you may have a bad battery.

Sounds to me like something is wrong. Did you just get the phone or have you had it?

Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....

Mark_Hardware said:
Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....
Click to expand...
Click to collapse
I've seen some posts about the Evo battery shutting off the charge when its being used. Were you using your Evo while it was charging?
If the battery doesn't seem to be giving you percentages that are accurate, you might want to recalibrate your battery.
Common misconceptions sticky (Evo Q&A) said:
Battery recalibration (Thanks to Cyanogen for this and to fachadick for bringing it to my attention).
If you're experiencing higher than normal battery drain, try the following:
1. Charge the phone to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About Phone -> Status -> Battery Level = Full.)
2. Boot to recovery and wipe battery stats.
(To have the most accurate of battery stats, reboot the phone immediately after wiping the battery stats and wait for your ROM to boot completely to the desktop. Once your entire boot is done and you have full access to the phone, go ahead and pull the charger and continue.)
3. Do not charge the phone until after draining the battery completely, resulting in it automatically shutting off. Take out the battery, and keep trying to turn on your phone until it will not turn back on at all.
4. Recharge the phone completely and then use as you normally would.
This is a method that has been proven to work, I am sure there are other ways. My battery lasts longer after doing this and the reading is much more accurate. It might be advisable to do this after every ROM install if you want the most battery life and most accurate battery reading by the phone's software.
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Click to collapse

Bad battery, wake issue or usb port/cable?

So after some time I've been battling with my battery life through the day. Few months back it was great, Id easily get a day no problem! Then I found I had a wakelock issue and had that fixed.
I now suddenly have almost multiple things going on at once but first a small back story.
Went to bed one night and had it plugged into the wall. Went to bed at 60% and woke up and my phone was down to 6%. I thought, well the usb port is bad or the cable. Took it into the sprint store, they of course say "it looks like its charging just fine, the light is coming on" (the light was on during the night too).
They checked the battery and they said it was bad. Im wanting to take it to another store and have them check, because either: they didnt want to replace me with a new phone or replace the usb port if thats bad.
1) Bad battery- in a matter of 30minutes (during my lunch break at work) my battery dropped from 63% to 14%- only used 3g for facebook and sent 2 text messages. And my phone is undervolted and underclocked
2) Possible bad usb port- I plug my phone in all day at work, and 90% of the time the screen is off. The % of the battery doesnt increase, but maybe decreases slightly (I have data and everything turned off while at work because I get no data signal).
3) wakelock- so suddenly I'm getting a huge percentage of system usage of 54% in my battery stats. A few months back it was maybe 1%? I flashed the .img that sets the wimax, PRI, NV, etc to what fixed the issue back then. Im just confused how this has come back now when I havent even updated anything related only my rom (MIUI 1.8.26).
So I've ordered 2 2000mah batteries off ebay- I wasnt going to pay $40 from a battery story across from the sprint store (as they didnt have any stock, only extended batteries).
If anyone has had a similar experience, or would know what is the culprit would love to get feedback. Hopefully I can get this fixed soon. Maybe just a trial and error.

Something really strange just happened. I checked my phone just now and the battery is at 98% and just maybe 30minutes earlier it shut off because of low battery
What I explained before about using my phone on my lunch break was only 2 hours ago and showed 16%.
I always wipe my battery states when I update my ROM or install a new kernal.

tlxxxsracer said:
Something really strange just happened. I checked my phone just now and the battery is at 98% and just maybe 30minutes earlier it shut off because of low battery
What I explained before about using my phone on my lunch break was only 2 hours ago and showed 16%.
I always wipe my battery states when I update my ROM or install a new kernal.
Click to expand...
Click to collapse
Don't wipe battery stats if you don't have a full battery, it'll keep your battery from charging fully.
It may be the battery, but since you're getting new batteries you'll know then. If you didn't get an external charger, I'd suggest doing so. That way you can guarantee that your extended batteries get a full charge, and you can switch out a dead battery with a fully charged one if you keep having problems. The usb port on the Evo is crappy anyway, but if the light comes on and stays on & you can transfer data through the usb port then I doubt that's the problem.
It could be hardware failure, but wait until you get a new battery and have properly calibrated to come to that conclusion.
In the meantime download Battery Monitor Widget, that should show you your true battery capacity even if the system will not. You don't have to use the widget, you can just open the app. Once you see that your battery is fully charged, calibrate your battery properly. Wipe battery stats at 100%, let it drain until it shuts off, charge to 100% without breaks, and you should be good to go.
Good luck!
Sent from my PC36100 using Tapatalk

Thanks for that!
I just bought a battery from BB to hold me over (50$ for a 1750mah battery?! )
when it charges to 100%, should I go into recovery, or use battery calibrator (app)?
Ill install that battery monitor too

BMW has the feature to wipe stats. I also recomend to look at the reports and judge when the battery is full by looking at mV. 4200mV is full charge. Then wipe stats FIRST, then unplug and run down completely, then recharge fully with out unplugging.
Sent from my PC36100 using XDA App

Ya just noticed BMW had that feature. Forgot I had a menu button. LOL!
This battery I got at BB is a "1750mah".
You know what I realized what might be the issue? Back a few weeks ago, I bought an extended battery to use to take videos at a concert. At that point I wiped the battery stats at 100% of the 2500mah or so battery..

Htc Desire Shuts down at 40-50% battery

Hey guys,
Assuming you have read the title there is something weird about my phone.
It shuts down at 40-50% battery (before it shutsdown it says empty battery briefly and then the htc flash screen appears and shutsdown).
The weird thing is the following:
It shuts down at let's say 40% battery, but when it re boots the battery is litterly empty (even when i boot in recovery it says --%, and when i plug the charger it starts at 0% again).
I have tried:
Battery Calibrator
Empty full fill up with wall charger and also tried usb charger.
Screaming @ phone
wiping battery data in recovery (4ext recovery)
The thing i am most confused about is that it goes out at 40% and when i turn it on again it's 0%. This never happened as it happened for the first time 2 weeks ago, confused. I tried different roms and it still happens (even ICS roms).
I wouldn't really mind if my phone would shut down at say 20% when it says actually it's @ 20. But as i said before: It says it's 40 (batterij indicator htc sense half full) and then shutsdown realizing after reboot it's completely empty.
Any help is much appreciated!
Mendel

Shutting down on let's say 15-20% is quite normal, but I never heard of one shutting down at 40%
Are you using the stock battery, that came with your device?
Sent from my HTC Desire using XDA

Any chance to try another battery? Seems really strange cause in most cases if you wipe battery stats you get your phone shutdown at 20%, not 50%.

Its most likely a bad battery that needs to be replaced specially if tue same thing happens when using a different rom.
via xda app

Yeah i know it seems so weird that's why i started this thread.
Before i buy a new battery:
What could be the cause that the phone goes out at 40% (or 30) and when it reboots it's empty.
Seems like the phone or the battery aren't in "sync" until it reboots to show it's empty.
Any tips or suggestions?
Thanks!

mendelmusic said:
Yeah i know it seems so weird that's why i started this thread.
Before i buy a new battery:
What could be the cause that the phone goes out at 40% (or 30) and when it reboots it's empty.
Seems like the phone or the battery aren't in "sync" until it reboots to show it's empty.
Any tips or suggestions?
Thanks!
Click to expand...
Click to collapse
I'd like to think of it similar to laptop batteries that have gone bad... you plug your laptop to it's power supply, it says fully charged but as soon as you pull it out from it's power supply it drops to 50% in minutes and then goes off. The battery cannot hold the charge anymore.

It can only mean that the battery's life is at an end. The only thing you can do is to change it. I suggest that you stick to original HTC battery as the "ChinaMade" ones will die a lot faster and you'll have to change it sooner than this one.
Regards.
Pushu.X

Hey guys!
I know this thread is started since several months but I actually have the same problem : I have a HTC Desire and its shuts down at about 50% and when I reboot it, it says the battery is empty.
I tried several times to recalibrate the battery (and to do all the things MendelMusic said in his post actually) but nothing changed.
MendelMusic, did you finally manage to solve your problem?
Anybody have a solution or any ideas?
Thanks!

FreakyC said:
Hey guys!
I know this thread is started since several months but I actually have the same problem : I have a HTC Desire and its shuts down at about 50% and when I reboot it, it says the battery is empty.
I tried several times to recalibrate the battery (and to do all the things MendelMusic said in his post actually) but nothing changed.
MendelMusic, did you finally manage to solve your problem?
Anybody have a solution or any ideas?
Thanks!
Click to expand...
Click to collapse
Mine used to shut off around 32%. This forum fixed this issue:
http://forum.xda-developers.com/showpost.php?p=24599586

Battery drain?
It's called battery drain. I have it too, but only at 10/20%?
If someone knows a fix, please send it to me

AW: Htc Desire Shuts down at 40-50% battery
Probably your batteries are just weak now. I'd recommend you all to invest 5 bucks in a new battery. Actually that helped at my old desire. Greetings

Thanks for your answers!
I tried the link of madreef and it didn't change. I will try again, maybe I did it wrong (hope it will work this time...)
@dschibril : I don't think my battery is weak because the problem occured as soon as I changed the ROM (CM10). The battery was perfectly ok before that.

battery drain
FreakyC said:
Thanks for your answers!
I tried the link of madreef and it didn't change. I will try again, maybe I did it wrong (hope it will work this time...)
@dschibril : I don't think my battery is weak because the problem occured as soon as I changed the ROM (CM10). The battery was perfectly ok before that.
Click to expand...
Click to collapse
Hello, I have the same problem with you. Did you manage to fix it and how? Have you tried a brand new battery so far?

It has to do with the Desire's poor battery age management system. Li-Ion batteries age, meaning that, as time passes, they're gonna be able to hold less and less milliamps. After almost two years, my Desire's battery can only hold 82% of the original ~1400 mA charge.
The only way around this is to use the Nexus One Battery Calibrator (Nexus One and our Desire share the same hardware underneath the hood). You'll need a compatible kernel and some patience. Instructions in this post.
My 2 cents: if your battery is only able to hold less than say 75%-80% of its original charge, then you should replace it. Li-Ion batteries age in such a way that they suddenly go dead, so it's not worth taking the risk.

Later Edit - If your Desire shuts down at say 40% - 50%, that means that your battery is 40% or 50% gone, so it's time for a replacement. I'd still try the battery calibration method i wrote about in the above post, just to determine if it's a freak software error or the battery's fault.
P.S. - Wiping battery stats does nothing to solve most issues (for the Desire, at least).

My phone turns off sometimes at 50%, sometimes at 80% of battery.
I have new battery now (original one) and it is the same. Phone turns off, only when it is connected to charger it does not.

Hiii
My hTC Desire 728 shut down when then battery showing 50% to 60% in charge. What is the remedies?

battery weird fail/very fast discharge

Hey all,
I have the wildfire running with a stable CM nightly (forgot exact version, but already a good year old I think and never any problem with the battery). I have not recently done anything special with my phone (no new radio, ROM, updates, new apps, ...) but since a week or two I have the following problem:
Charging the phone takes first of all ages to reach 100%. And when it's charged, it will crash about 4 hours later. The battery indicator will be at about 35% or higher just before it crashes (thus not at 0). When I reboot (while charging after the crash) however, it says 0 or 1% left. When I then go to the settings -> about phone -> battery , the battery life just INSTANTLY drops from about 60% to zero (see picture)
This problem appeared pretty out of nowhere. Is this a battery calibration problem, or do you guys think the battery is just at the end of its life? I'm aware that this could just be it since the phone is almost 3 years old (bought on day of release here), but it's just acting so strange.
Any help is appreciated,
Thanks,
Maarten

Try the two obvious things
1- wipe dalvik cache and cache partition
2-wipe battery stats
Can you post a screenshot os the battery usage screen

The level indicator is in the first post, the usage (apps etc) I cannot do right now as after wiping it does not reboot anymore (stuck at HTC screen), but it was about 50% for signal and 50% for standby (or what are the 2 largest users in %, I forgot)

Wipe battery stats or manually delete batterystats.bin. Calibrate it. If nothing works reflash your rom. Not a battery prob.

Odp: battery weird fail/very fast discharge
I had similar situation. Change battery. It is broken probably.
Wysyłane z mojego HTC Wildfire za pomocą Tapatalk 2

There seems to be many battery problems for wildfire, I had to abandon mine because of a similar problem, except it would charge to 100% but then drop to 4% within a few hours and wiping battery cache never helped, tried my battery in another wildfire no problems so in the end I gave up with it
But I remember someone saying it was something damaged inside the phone
Anyway good look with your issue hope it gets solved.
Sent from my HTC Desire X using Tapatalk 2

I fixed my booting problem by reflashing the ROM. I also wiped cache/dalvik and battery stats.
The problem remains however. Stays around 100 pretty long, then goes to 80% in less than an hour. And then it crashed around something like 60%. After rebooting it said 34% left.
Guess the only thing else I can try is to completely empty the battery, then recharge it whilst the phone is off.
I'm going to buy a new smartphone soon, so it better just work another month !

wolfway said:
I fixed my booting problem by reflashing the ROM. I also wiped cache/dalvik and battery stats.
The problem remains however. Stays around 100 pretty long, then goes to 80% in less than an hour. And then it crashed around something like 60%. After rebooting it said 34% left.
Guess the only thing else I can try is to completely empty the battery, then recharge it whilst the phone is off.
I'm going to buy a new smartphone soon, so it better just work another month !
Click to expand...
Click to collapse
Yea, wipe battery stats again, sue ur phone till its 0% and charge up to 100%, keep on charging for about 20 mins.. try then if battery shoes properly..

Doesn't seem to solve it... Completely emptied the battery (or at least I'd think it is empty, see further), then charged for like 8 hours whilst phone is off, then wiped battery stats in recovery. Then after rebooting first thing it did was crashing again.
The crashes often seem to be related with internet/apps. I now have internet and poweramp app off and it works fine (no crashes), but when I turn these on, sometimes after a minute it crashes, pretty weird
Also after some crashes, about 15 minutes later I can suddenly reboot, then it showed 15%, then it crashed again. After reboot (without any charging) it showed 65%... The indicator is completely ****ed up it seems...
Guess there is nothing to do but getting a new phone as this is too annoying. Thanks for the help though !

Batt voltage meter defect
I have a exacly same problem.
It is the voltage meter problem. Mine wildy shows 4.07V at fully charged battery which if you measure conected battery on its terminals mulitimiter shows 4.273 so its off by 0.2V. Now the phone will never light green led, it think battery is not charged fully. I checek this with 4 years old and new original htc batts. Same thing, voltage meter defect! If you charge it to full, multimeter shows 4.237V on batt terminals,reboot it and get a spike to 92% it suddenly drops to 78% even though mains charger is still connected and charging! Internal Volt meter also reads dorp from 4.07 to 4.02! :crying:
There i also thread on Desire Z forums of same thing happening here.
Is this HTC using crappy mobo components?

vicryl said:
I have a exacly same problem.
It is the voltage meter problem. Mine wildy shows 4.07V at fully charged battery which if you measure conected battery on its terminals mulitimiter shows 4.273 so its off by 0.2V. Now the phone will never light green led, it think battery is not charged fully. I checek this with 4 years old and new original htc batts. Same thing, voltage meter defect! If you charge it to full, multimeter shows 4.237V on batt terminals,reboot it and get a spike to 92% it suddenly drops to 78% even though mains charger is still connected and charging! Internal Volt meter also reads dorp from 4.07 to 4.02! :crying:
There i also thread on Desire Z forums of same thing happening here.
Is this HTC using crappy mobo components?
Click to expand...
Click to collapse
Htc wildfire is no more released now. It stopped in 2010. This has the answer. That is one of the bug with wildfire.
Sent from my HTC Wildfire using xda app-developers app