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HTC s640 Battery Issues?

Hi Folks,
My s640 seems to have developed an issue with the battery. It will get to about 50% and stay there for most of the day then suddenly I get the low and critical warnings, then off. The warnings then off sequence happens within about 10 seconds of getting the first warning. On one occasion I got the low and critical warnings, but then the phone reported 268% battery remaining.
Is/has anyone else experienced this issue or anything similar? I'm wondering if it is the phone or the battery.
Thanks.

I am having the same trouble.
I'll fully Charge my battery and then disconnect it and us it for about 10 minutes and suddenly it will drop my call, turn off my bluetooth and disable the radio (network), and if I don't plug it in, within 30 seconds it shuts off. If I remove the battery, hold the power button for 5 seconds and the put the battery back in and turn it on then I have my battery shows 90+% free.
I'm not sure if it's the battery or the phone.

have you tried running the battery till it won't turn on the phone. Then charging it up again?
maybe a hard reset may help?

daroota said:
I am having the same trouble.
I'll fully Charge my battery and then disconnect it and us it for about 10 minutes and suddenly it will drop my call, turn off my bluetooth and disable the radio (network), and if I don't plug it in, within 30 seconds it shuts off. If I remove the battery, hold the power button for 5 seconds and the put the battery back in and turn it on then I have my battery shows 90+% free.
I'm not sure if it's the battery or the phone.
Click to expand...
Click to collapse
Yes I too am having this issue since rom upgrade so is a friend, he just purchased new battery from Telus but they shipped wrong one. Will update if new battery resolves his issues. I went throught three phones with brand new battery they all did same thing Battery is not HTC 20 dolllar aftermarket one (just before warranty expired). Have gotten 400 credit for new phone but nothing like this one out there except Touch Pro Diamond and I hear even with new battery that phone battery life is too short to last through day. Get feeling Telus broke something in software with Rom update used to be when phone battery was expiring a red light would blink (opposite of blue tooth light) now it is only notifications from WM that phone battery is critically low and shuts of radio etc. yet you plug phone in and it's charged 10 minutes later makes no sense. Rechargable batteries voltage change with charge the interesting thing when I pull my battery the voltage is the same charged or just after error messages (I have a very expensive True RMS Voltmeter from work that has been calibrated in last year) but without load this isn't an accurate test. Does make me think something is not right and beleive it software related for more see my post in Howrds Forums under phone model.

I am having the same issue after the ROM update, not sure if it's the cause. Already replaced a battery on warranty for not holding charge. But now I have had the phone over a year so telus wants me to buy a battery for $80. I know based on this information i'll be wasting my money.
i want stuff to work for more than a year what the hell is money good for?

any fixes or updates wether the new battery helped??

I replaced the battery on my phone and these odd issue I was having are gone guess we have to face the fact that you need to purchase a replacement once a year hopefully it will last a year my problems start just short of a year.

I just got my new battery from here http://www.longlast-battery.com/productCart/pc/viewPrd.asp?idcategory=0&idproduct=17483
I will post after I get it full charged and try it for a day or two
where did you get yours from?

well the battery didn't even last an hour on the way to work.
#1 it was similar but 2-3mm shorter than the OEM and barely touched the contacts on the phone.
#2 charged overnight ok and said 100% charged then withing 20min it said low battery then died shortly after
#3 would not charge a second time (on 2 of my wall chargers, two usb and 1 car charger) Just the red light would light up. Tried jiggling the battery but nothing not even a flashing red light.
so much for a battery bought from the US. Waiting for RMA

typhoonk said:
well the battery didn't even last an hour on the way to work.
#1 it was similar but 2-3mm shorter than the OEM and barely touched the contacts on the phone.
#2 charged overnight ok and said 100% charged then withing 20min it said low battery then died shortly after
#3 would not charge a second time (on 2 of my wall chargers, two usb and 1 car charger) Just the red light would light up. Tried jiggling the battery but nothing not even a flashing red light.
so much for a battery bought from the US. Waiting for RMA
Click to expand...
Click to collapse
I purchased a battery from E-bay and it would not charge at all. Existing charge in battery was enough for me to know that my issues were battery related after all as phone lasted for quite awhile. Tried charging ebay battery for close to 12 hours no go, so returned it for full refund. Called Telus because my calls in were while I was under warranty still but it had since expired they credited my account for the price of battery over a couple of years (1.5 batteries really) to make up for battery not lasting more than a year...hope that makes sense. Doubt I will buy another HTC with todays battery technology there is no reason one of these batties can't last 2-3 years if taken care of. Just a money grab telus/htc on their part in my opinion.

Gave the battery I got from longlast-battery another try.
the battery is CS-DS640SL 1250mAh 3.7V
I got it to charge by turning off the phone and plugging it into a usb port on my PC. Took about 6 hours to charge to 100%.
Won't charge when phone is on which is weird. Even at 90+% charge.
Lasted a full day without charging. That's a good thing I guess. Even when I restarted, it didn't lose the typical 10% drop in charge the other battery does.
I'm going to discharge it and charge it three times to see if it starts working properly and letting me charge it normally. Was a tip someone gave me. Won't hurt anything, and if it doesn't work I can still send it back.
Curious what you guys think. do you think it's a bad battery and I should just get an exchange, or I should just get my money back, and shell out the $100+ for a Telus battery?

Well the longlast battery test failed badly. Lasted about half a day with minimum calls and data use. No wifi no bluetooth. After it died I took it out and let it sit for a bit as the battery was fairly warm. After I put it back in, it said I had about %40 left. Very odd. And it lasted for another two hours before dying.
Now it's back at the won't charge stage. So I finally got an RMA number, so this one is going back.
Hitting Telus on the way home to pony up for a new battery. Getting the extended one as it's only $20 more. Hopefully this one will last more than a year - then I can get another phone (got to love 3yr retention contracts that end early )

I've created a Facebook group to act as a petition for everyone with the notorious battery life problem.
Join the group here, it's open to everyone:
http://www.facebook.com/group.php?gid=100925126406
Share your experiences dealing with Telus positive or negative ones.. or tell us if you've been able to fix the problem by hacking the device. Anything at all that will help the people still stuck with this phone.

I have done some efforts regarding battery capacity measurement Just lookup this thread: http://forum.xda-developers.com/showthread.php?p=5558383#post5558383

Please Help HTC S Charging Behavior

Hey Guys
I bought my HTC Sensation about 3-4 days ago. No root, No S-OFF. For past few days, i followed battery charging procedure, drained battery completely, left phone off, and charged it. I did same procedure few times. Doing this procedure really improved battery life on HTC Incredible S.
Anyway, last night, battery was running low 30% after 14 hr use. I needed alarm for morning so, at 10pm i plug phone to charger and left it on. 4:30 am, got up, and orange led light (charger indicator) still on. Check phone, and it still charging. Checked battery and it shows 50% charge. Anyway unplugged it, fetched to work put on charge, after about 1.30 hr still at 60%.
Decided to restart phone, as soon i did restart, battery went back to 100%.
Does anyone experienced this?

Nope, that sounds weird. I would suggest battery calibration for you if this is a reoccuring thing.
Sent from my HTC Sensation

Do i need S-OFF or rooting to get battery calibrated?
Is any other way to get it calibrated without root or S-OFF?

Oh crap. I think you do need to be rooted to use the calibration app. My bad. Try using the search button? I would do it, but I'm not on my computer now.
Sent from my HTC Sensation

My battery took forever to charge the 1st couple of times... After about 3/4 charges it sorted itselft out. Good luck

I am kinder hoping it was one of software glitch, hopefully it won't happen again. Will report back after few more charge cycles.

animaleyes76 said:
My battery took forever to charge the 1st couple of times... After about 3/4 charges it sorted itselft out. Good luck
Click to expand...
Click to collapse
Mine also took a long time the first few charges (probably 5 hours or so). It now charges in well under 3 hours.

Same here. When new & after a factory reset, it will take a LONG time to recharge. But will sort out after a few cycles.

Thanks guys,
I don't know what happens, but after 5hr use (heavy use), few voice calls (one about 30 min) emails sync every 15 min. Battery shows me that i used only 9%, impressive! I installed battery widget to see if some software issue, but seems to be only 1% out. Phone shows 90% life left, widget 91% (but still calibrating)

[Q] Is it my battery problem or ....?

Hello guys...
Its been a month since I rooted my Explorer, everything was fine.
I am very caring for my small pico, I charge it by switching it off, never unplug the charger untill it is fully charged, I am using using it for an year and it has never been dropped from my hand. I do respect my things, my Nokia 6600 is still 'new' and I have been using it since December 2004.
My pico stands on battery for nearly 3 days with average usage (reading ebooks, music, some internet, calls and messages).
And for 4-5 days without internet connectivity.
Date: 1-May-2013, 1700hrs.
My battery was down, I switched my mobile off, plugged it to the Original AC charger which I got from the Explorer box and waited, It takes 2.5 to 3 hrs for full charge, I unplugged it from the charger, switched it ON and kept it aside.
After nearly an hour, I took up my mobile and shocked, battery indicator was not fully Green (i.e. first unit of battery indicator was finished).
I then opened an app called 'Android Task Manager Pro' and it was showing 'Battery : 76 %'.
I cannot understand the cause, I haven't installed any new app or so.
Without any time, I just switched it OFF, took out my SIM, reinserted the battery, switched it ON, switched it OFF and kept it in Cupboard for 2 days.
Date: 3-May-2013, 1930hrs.
Took out my mobile from Cupboard, switched it ON, only 2% of the battery was remaining.
Plugged it to the charger, and after just 20 minutes I unplugged it from the charger (it was the first time I have unplugged it without fully charging)
Saw the battery %, it was 23%.
I then switched it OFF, took out my battery, and put it into my Sister's htc Explorer.
In her mobile, the battery shown : 46 % and it was draining rapidly, 33% in 5min standby.
I took out my battery and gave it to my neighbour to keep it refrigerated for the night (I usually refrigerate my Nokia 6600's battery, as it was good practise to do so for Li Ion batteries, my Nokia 6600 is still performing with the preloaded battery from 2004).
Date: 4-May-2013, 0730hrs,
I took my battery (very cool), kept it in middle of paper rack to de-moisturize it, after 5 minutes, kept it in open atmosphere for a minute.
Took the battery, noticed it finely and found a RED mark on it.
Is my battery dead??, if yes then cannot believe it, it was doing well, it has not become fat.
Please, help me friends is there any way to cure it back???
Please, if cannot be cured, please provide link for buying a nice battery [LAST PRIORITY].

i think your device pin which is connected through battery is getting some thing wrong..and thats why your killing itself very faster....take off battery from device...then you have to change or solder from device circuit..it will surely solve the problem...
Sent from my GT-S6802 using xda app-developers app

Here is the snap of my battery

This red thingy I believe is moisture 'sensor' which is normal to be red, your battery was in the fridge. You can give it a try now, if it has no moisture in it, but I'd wait for couple of more days. Also you should know, this is low end phone and it's battery is not as good as old nokia, maybe some ice was inside, this should kill it.
Now I have a suggestion, try with battery from another explorer(as you have one close) and check out, how this other battery is doing on your phone, if it's also bad........ new battery won't change things, also this may indicate some software issue, check thing out with better battery stats, or with GSam battery monitor, if there is nothing wrong with software, you can try charging the phone from usb, maybe your charger is fu&*ed up.

[Q] help with htdc desire 500 battery drain

Hey guys, i have reacently bought new htc desire 500, and i recently noticed (at the nex day) that when i pull my phone from charging (green light indicates that its fully charged) the phone imediately goes from 100% to 99%, and in two hours goes to 80 even if i do nothing... This morning i just read some newsfeed over wifi... In 20mins it wen off to 94%. The phone is brand new, not rooted stock firmware. I have sent it to repair center they just changed the charger. And the same issue persists. I have tried to calibrate the battery, tried and charging in other ways... But its just the same. My old htc rhyme stayed at 100% for hours if i didnt use it. And after university time (6h a day) it just depleated (with games and etc) to 60. But i had plenty of time to go to internet and chat whole day with couple of quite long calls. Sorry ofcourse for crapy language, hope there is some sort of repairs, caus i dont want to give my phone again for two weeks again...

think i found what happened
ok guys and again me i have gotten home from university now, and putted phone to charge. it was showing me that it has began to charge from 7% and ok, then i just pulled out the charger pulled out battery (charger cable is in phone) then i putted charger back and then battery, and pressed one time the on/off (1sec) then phone turned on (not completely) and showed me that battery is charging, from 73%. (the turning on, the phone wast not complete, it started to show only battery that shes charging) so i think there is some problem with calibration of battery, so we need to do is give it a quite good kick, with charger and non official charging mods. (pulling out battery while it charges and etc...)

[Q] slow charge, fast drain, hot batt, jb update

​ Hi guys
I have a galaxy s relay 4g
It took 2 hours of constant usage, to kill the battery from 50 to 0%
Figuring this was normal, I was configuring everytthing while downloading 50apps over wifi
Note phone was on airplane mode, but wifi was on.
Next day I updated from stock ics to stock jb
Turned it on, it was at 91% and after 5 min of usage the phone said it was too hot to charge the bat.
Phone went from 91% charge down to dead with one hour of moderate usage and 2 hour siting idle on airplane mode, wifi on..
It was 46c on batt temp whole time
Charged for 3 hours from pc usb and it gained 3%.
Charged another 3 on wall socket that came with nokia lumia, rated at 1400mA.
Charged 15%
The battery info showed that even though the phone was off, it woke up many times during the night -- IT WAS OFF as in the battery with the 4 white circles on the bottom were showing!
Turned off, removed sdcard, factory reset (left sd out, its still out) i
Came back ok, it syned to google and reinstalled all my apps, then died again
I've tried 2 batteries, and 3 different chargers,
I factory reset the phone too.
Wake lock says the android system used 18% of the battery... other than that I can't see anything obviously wrong

Stock on any device is also resource hungry.... What are the specs of the chargers you are using...certain chargers will not put out the needed amount of ma or volts...which also messes with a Samsung battery overcharge feature
Sent from my SPH-L710 using Tapatalk

Charger 1 is my pc usb port, which charged my other two phones (mytouch q by lg and sammy captivate glide) about 70% as fast as charger 2.
Charger 2 is what came with phone but doesn't appear oem. 5.7v at 600mA
Charger 3 is the oem charger which came with wifes lumia 925 which rates at 5v at 1400mA
Its "charging" in my car now, no sim card, wifi on and connected to a medium strength signal, 0% charged and I wached the voltage steadily decline as I hit refresh in the gsam battery monitor. Started at 3.3v and in a minute was at 3.18v. Still 0%
Car charger is a no name brand (which kept my captivate charged pretty well despite using gps at the end of my 6 hour drive the phone was still at 75%.)
The battery is samsung oem.
The first battery I tried is also samsung oem.
I also have a 5v 1amp charger that will fill both phones between 1 and 2 hours if memory serves, the 1.4 doesn't seem to go any faster as I guess the won draw much if any more than 1 amp.
Given all of the above I'm inclined to think its software or other hardware issue.... phone was sold as "seller refurbished" on ebay, but the description says its just an open box sale of a phone that came back within the first 7 days....and yes I bought a square trade warranty in case some BS like this happened.... but want to try and fix before going that route.
Is there no way to factory reset to the original ics firmware?
I see you also have a relay, once I get this all figured out id love to root and rom mine like you have yours!
I know the newer android roms have more features but are they more or less responsive in general?
Main reason I got a relay instead of another captivate glide is the relay has much more rom development.

And now the red charging led isn't even turning on..... I wonder if its defective.
Shame I can't return it now, the screen has light scratches (was in my pocket while I was working under my carL
And it was sold in like new condition

Grabbed a brand new USB cable plugged the phone into a 5th charger, oem HTC radar, 5v at 1amp
swapped the battery for the 1st one I had.
Appeared to charge fine. Pulled out the charge cord at 50%, plugged it right back in.... the battery charging screen went from about 50% down to 20% in 1 second.
Confused, I left it plugged in and went to bed.
Got up this morning and it was dead again.... while plugged in, while off, not even the charging led was on. switched to the 1.4A charger, still nothing... hit the home button a couple times and the thing woke up into the battery charging screen (it ignored the power button the whole time)
The gsam screen was even more interesting:
it doesn't show much but the line graph showed a rapid decline from 20% down to almost 0 from some short time before 3 am, then
3 hours from 3am to 6am, the charge went from near 0 to 50%, and then in half the time back down to near 0.
The temp graph wasn't a line, but fragments of one
does Gsam show the amperage of the draw or charge on yours? its only ever given my the voltage of the battery and shows 1mA on the bottom of the battery,
ebay seller says clean the charge port with alcohol.... not sure why someone should need to do that on a "like new" phone but I'll have to try and find something tiny to shove a paper towel in there with..... that would account for the not charging but not for the high drain.... could thins thing have a short someplace?

sounds to me like a defective device. the fact that you did a factory reset and it's still not charging even with it turned off is probably the biggest sign there. it can't be any apps you've installed because you wiped them all off. i think you've gone way above what should be normally expected of a customer in terms of troubleshooting your device. hairline scratches on the phone are fine. you should still be able to return/exchange it IMHO. especially with the squaretrade thing.
yes, it's possible to flash back to stock ICS but if it's not working with the factory rom (whether ics or jb) the phone obviously has issues.
i just bought mine a couple weeks ago too, though not over ebay. i found a local tmobile "authorized" store (advertising on craigslist) that was selling stuff with similar description - open item or customer purchased and returned within a week. i have used mine on all sorts of chargers without issue: a motorola dual-usb rated at 750ma in the car, a monoprice 2.1a charger built into the 10-outlet power strip at my desk, 2 different laptop usb ports, and a samsung wall charger rated at i think 1.8a which came with my wife's galaxy tab 2. i never ran stock rom for more than about a day or so, just to verify proper operation of the phone, and now i run cyanogenmod11. i can go all day on a charge with what i consider medium to semi-heavy usage, which i think is great.
for example, yesterday i unplugged at about 9am after an overnight charge (with the phone on - i almost never turn it off because i have to be able to receive on-call alert emails from work). i got the day started in the attic installing radiant barrier (so it was rather hot). i had the phone in my pocket streaming a shoutcast station over wifi for probably about 4 hours. later, i watched a 30 minute show on netflix (also wifi), played some wordfeud, surfed the net a bit, watched some youtube videos on fixing my weed eater, did a few emails for work, probably 20-30 texts and maybe 10 minutes worth of phone calls. by 11pm i was still around 30% charge remaining. at no time did i plug in my phone during the day.
i have an extended battery on its way from china, so i expect to be able to go 2 full days on a charge with similar usage. and the thicker back plate will make it easier to hold, since i have such long fingers.
tl;dr - you got a bad phone. exchange it.