Database Users

Another critical bug on the universal :-(

I just found another painful bug....this one is related to charging (battery). I normally put my qtek on charge all through the night when I go to bed. For the last 4-5 days I have been unplugging the device when it showed 100% charge, put it on standby (no wifi,btooth,gsm etc.) and made sure there were no applications running. I usually leave it in the standby state for 2 hours while I finish my morning exercise.
whenever I return, I see a power loss of 20%!! I was shocked to see how I could loose 20% in 2 hours ith my device on standby mode. this time, I even made sure I pressed the power button before I closed the lid, and still...no luck :-( I still lost 19%
I guess the problem is, when the charger is connected and the battery gets completely charged, it stops charging further. I guess it reaches a fully charged state within 2 hours, and the battery starts to drain all through the night...and wm5/htc don't start charging once again when the levels go down....i'll have to do a cuple more tests until I can totally confirm that this is the bug...until then, are anyone of you guys experiencing the same problems?
Another thing I forgot to mention, once again I charge my battery from 80% to 100%, and it lasts through the entire day(12 hrs) and drops to only 40% with highhh usage (bluetooth ON throughout, gsm on with 3hrs talktime, and some light gprs usage). so it really is not a problem of my battery as I see it!
Cheers,
San

Hmmm. I hate to say, but I don't see that problem. But I do have the unlocked JasJar Universal from HTC, not the qtek. If this happens with other qtecs, maybe they load a custom software that is acting up. In fact, I could leave the device on for two straight hours off a 100% charge and I don't think I'd lose 20% unless the phone was on too.

DaleReeck said:
Hmmm. I hate to say, but I don't see that problem. But I do have the unlocked JasJar Universal from HTC, not the qtek. If this happens with other qtecs, maybe they load a custom software that is acting up. In fact, I could leave the device on for two straight hours off a 100% charge and I don't think I'd lose 20% unless the phone was on too.
Click to expand...
Click to collapse
have you tried charging your device for well over two hours before unplugging? (around 8-9 hours of charging for instance?)
I don't really think it has anything to do with the qtek rom/device. the qtek rom has the least ammt of customisations on it...
I still suspect that the charging process halts and it starts to drain the battery....but the os doesn't reinitiate the charging process once again....hmm
I'll have to wait till tomm before I can do another round of checking....tomm, I want to charge it....and before I unplug, I'd remove the battery and put it back and see what it indicates...I suspect that the power would have already dropped to ~80% by then...that's the only explanation I can think of at the moment....
San

Hi Dreamtheater!!!
I exactly follow you as far as charging is concerned and I hv a Jasjar....just to inform you...I started charging yesterday at 11.30 PM and just got up to see the charge..it is 100%...no power loss...

hdubli said:
Hi Dreamtheater!!!
I exactly follow you as far as charging is concerned and I hv a Jasjar....just to inform you...I started charging yesterday at 11.30 PM and just got up to see the charge..it is 100%...no power loss...
Click to expand...
Click to collapse
it shows 100% for me too...but in just 2 hrs, it drops to 80% which is weird! from then on, it drains normally...
I still need some time to nail the exact cause for the problem...hmm!
S

Hey dreamtheater, I charge my Exec overnite everynite just like you. Usually at least 7 to 8 hrs everynite, but I have yet to experience what you mentioned here. My Exec always start fresh from 100% and by the time I get home at nite, it will drop to about 70% so no, I'm not getting the batt drain issue like you do..

I did not experience any such behaviour with my Qtek. It charged fine over night and had 100% battery when unpluged.
Are you sure your's does not wake up for some reason after you suspend it?

Dreamtheatre, I charged my XDA Exec overnight (7 hrs) and after 2 hrs with GSM/UMTS radio on the unit lost 5% battery charge.

@DT,
You need to set the device to switch off after a specified time interval. This can be done by going to start>settings>battery>advanced and check the device timeout box. I usually set it to 1 minute.
Last night i was browsing on my JJ and fell asleep while doing so, IE and notes and inbox applications were still open. When i started, the battery level was 93%, i browsed for about 10 minutes over Wifi before i fell asleep. The device shut itself off and when i woke up the battery level was 82% which is prportionate to my 10 min WiFi use and probably 1 minute standby time before it shut itself off.
Try it out, i'm sure you will stop seeing the massive battery drain
Cheers.

Another thing. Contraty to what people think, keeping the universal's battery topped off improves battery life. Prevent it from dropping all the way to say 30% or so. You will notice the difference in battery life in just about a week or so

Another source of battery drainage i've found is when i'm charging my Exec from the USB connection on my PC - If I leave my Exec connected and put my PC into standby, it will literally suck the life out of the battery over the course of a few hours!

I think some of you have got me wrong...let me restate the problem...
I charge all night
Wake up with 100% charge
Pull off the charger
Leave it on standby for ~2 hrs (no apps running, gsm, wifi, all off)
Come back, and find a ~20% drop
Back to my findings now.......
Another morning, no luck :-(
It had 100% charge...I pulled off the battery, put it back in and restarted....still showed 100%, so I guess it really was fully charged after all. This time I turned off receive incoming beams as well....left it for a couple hours, and was disappointed to see 82% when I got back :-(
However, through the day I get excellent battery life....all day's use ends up consuming roughly 30-40% charge which is excellent compared to my prev xda2 which would comparitively loose all of it by eod. I guess if I park my device in flight mode it tends to start draining quickly....now that's my only available reason or cause that I can think of....
tomm I guess I won't put the device on flight mode and leave it just On instead. This is weird because its just me having this problem :-(
San
PS: I'm using the regular ac charger itself for charging...hmm

DT, I disabled PowerSave and switched off the GSM/UMTS radio on my Exec. After about 8 hours I had lost about 30% charge. So your 20% does seem high. It could just be the battery as loss of charge is not linear. Why not let it drop to say 60% and then do your test again. By the way there spare batteries seem to be available now for the Universal.

Battery drain

Trying to figure out 1) cause of battery drain and 2) poor power mgmt.
I had a fully charged phone yesterday at 5pm, leaving work.
When I tried to turn it on this morning it was completely, completely drained.
I have 4min timeouts set on the phone for backlight off, and 5min for device off when on battery. I had WiFi tuned off, Bluetooth on.
I did have Wayfinder and GPS active on the way home, and may have just turned off the phone. If I turn off the phone with Wayfinder active, would this continue to drain the battery, GPS reception is passive, is it not ???
How come the battery drained to such an exent, it took 5 min on a charger before it would even power up, from a full reset and WM load.
My old XDA would hibernate at low battery percentage, and still have a reserve charge to keep the phone content/settings intact.
Any views, suggestions.
Peter

When I first got my x1 end of last year, I found I only got around 6 hours out of a battery.
Now I get about 36 hours of normal use out of one charge. Including 1 hour of gps each day/ half hour of wifi.
What worked for me was to, reduce back light time to 10 seconds when standalone. I also found S2U unlock drained the battery, so I now use the standard unlock.
Also, ensure that no auto updates (only manual) are done e.g SPB weather, insight RSS etc.
I have also changed my battery to a Mugen 1800 mAh. This seems to have increased my time by around 25% on average use.

S2U2 no longer drains my battery, one of the old versions did and so did the old version of AE Button but they are both good now, I get min of 2 days and max of about 5 depending on load of use... normal use is about 3... (internet for emails and dling rss feeds and some reading of forums 1 hour, reading books/texts about 4-5 hours and listening about 2hours plus calls and texts is a normal day for me...)
GPS does drain your battery pretty quick though...

pokdub said:
I did have Wayfinder and GPS active on the way home, and may have just turned off the phone. If I turn off the phone with Wayfinder active, would this continue to drain the battery, GPS reception is passive, is it not ???
Peter
Click to expand...
Click to collapse
There is no poor power management in there.
It is all because of wayfinder. GPS is still active if you leave Wayfinder active all the time and it will drain the battery supoerfat.
Try closing Wayfinder and you will what I am talking about.

I found out that any Battery applications greatly reduces my (juridically - my wife's) X1i lifetime.
AFAIK to measure any battery charge you need to short circuit it for a millisecond or so and measure the current, not the voltage. When any Battery software does it (through the hardware) every few seconds your battery looses its charge faster.

sms2000 said:
I found out that any Battery applications greatly reduces my (juridically - my wife's) X1i lifetime.
AFAIK to measure any battery charge you need to short circuit it for a millisecond or so and measure the current, not the voltage. When any Battery software does it (through the hardware) every few seconds your battery looses its charge faster.
Click to expand...
Click to collapse
I am running Home++ and its fairly decent as far as drain goes... I dont notice much more than when its not running...

Tks for all your feedback.
I am fairly ok with normal use and battery life.
In this particular instance the drain happened so fast, overnight, and I was not using the X1 at all. (or so I thought so).
So I am curious to know what caused the rapid drain, and why the X1 does not have a more controlled low power close down.

pokdub said:
Tks for all your feedback.
I am fairly ok with normal use and battery life.
In this particular instance the drain happened so fast, overnight, and I was not using the X1 at all. (or so I thought so).
So I am curious to know what caused the rapid drain, and why the X1 does not have a more controlled low power close down.
Click to expand...
Click to collapse
I have already explained. It was the GPS application that drained the battery, nothing else.
Just as a test try leaving it for as few hours running again and you will see.

battery drain
I do have the same effect. but I do not use GPS or wifi at all.
Sometimes it put the phone down, screen disabled and fully charged. No application running.
Next morning the battery is dead.
It happens about once every two weeks without any sign why...
My solution: I bought a desktop charger which is able to charge a second battery and simply exchange it, when this happens again.
Not ideal - but right now we seem to have to life with it.

do you have an old version of S2U2 or AE Button plus on your phone? And I have also read that batti used to cause drain problems... this might be the case with yours(?) if you have none of these installed then I am of not much help...

If u use Push email or active sync, Google sync Hotmail sync any Email sync on arrivel option ur battery will only last 5hours cause the phone is using mobile web at all times and constantly sending and recieving, turn it off an ur phone will last over 19hours with out charge... EG i turned my email sync off at 10am an the batt level was 60% didnt charge it till next day 11am when the batt levels drop to 20%

Is your X1 fairly new?
I experienced exactly this issue about a week after I bought my X1. No apparent reason for it, but the battery just drained right out overnight.
Strangely, the same thing happend about a week after I bought a HTC Touch Pro.
In both instances it has happened only the one time. Since then things have been normal, or drains caused by known software issues (like the buggy version of S2U2).

As earlier suggested, I loaded the Wayfinder app, with its GPS active.
I tuned off the phone when the app was on screen.
Left it for 3 hours, and there was a noticeable drain of the battery.
Lets hope the new WM 6.5 improves Power Mgmt, and has a more elegant low power handling.

Do you have G-Alarm installed? My Battery gets drained very fast when I have this installed. I tried many different versions within the last few month, allways the same.

I experienced this last night for the first time with my X1. I left the X1 on the bedside table at 11:30 with 90% charge and was awakened by the battery low alarm at 6:30 am (not good).
The only thing that I noticed that was unusual was that my X1 had been connected to the PC with ActiveSync in the connected state. I shut down the PC and then unplugged the X1. In the morning after the battery low alarm I noticed that the phone thought it was still connected. I use SPB Phone Suite and it was still showing the Cradle profile. This would not change in the automatic mode so I had to reboot the phone. Everything has been fine since.
So ... I am wondering if ActiveSync can sometimes go crazy and drain the battery more quickly??

I have a faster draining battery since i installed g-alarm. can anyone confirm that?

In my case I dont have G-Alarm installed.

Well my battery is not draining that seriously. it's ok i guess.
But maybe you should try what is suggested in the last post of this thread:
http://www.xperiax1.net/forum/x1-problems-issues/2113-another-kind-battery-drain.html

Deep discharge my X1-battery just almost doubled my battery life in average

Seafal said:
I have a faster draining battery since i installed g-alarm. can anyone confirm that?
Click to expand...
Click to collapse
I have been using G-Alarm since the very moment I got my X1 and there is no noticeable battery drain. Lasts 3-4days.

Another battery drain problem - driving me CRAZY!!

I know there are already a lot of discussions on battery drain and believe me, I have read every single one of them. However, I think mine is slightly different:
When fully charged and using WIFI for 10 minutes, 10% of juice will be used. Listening to MP3 for 1 hour will also use another 10%. Overall, battery life is really bad but the key is it only happened suddenly. It have been very good up till now.
I have tested this on another battery and have exactly the same results so it is not battery related. I have also hard reset the phone and tested the battery with nothing installed and it still drains. A full charge only lasts me like 4 hour of very light use.
I installed Battlog and the power consumption is around 90 which I think is pretty low, but at times, even with this low consumption, I can see the battery usage literally falling before my eyes, like 5 % in 5 minutes.
I have also tried the HTC battery test, i.e. fully charged the battery, turned on plane mode and full brightness. After one hour, it only used 8% which I thought is normal. However, if I start using the phone by just simply clicking around, it will start dropping.
I believe the phone is fine on standby but once it starts doing things, even simple operations like moving around folders, it starts consuming a lot of power.
This all happens after an overnight charging episode when I noticed that the light stays amber in the morning and the percentage stays at 80%. I soft reset the phone and it immediately show 100%. This has never happen again but my battery usage is never normal since.
All in all, I think it is somehow hardware related, like the battery gauge is bad or the charging is never complete but it still shows green. It is still under warranty but I think will be very difficult to convince the service centre that there is something genuinely wrong with the phone.
P.S. Should also mentioned that I am using the stock telstra rom and have also cycled through the batteries twice before testing.

I had the same problem...
You should try resetting you battery:
1: let your battery drain to 0%
2: fully charge your battery while keeping your phone off!
this solved the problem for me..

Fenixz said:
I had the same problem...
You should try resetting you battery:
1: let your battery drain to 0%
2: fully charge your battery while keeping your phone off!
this solved the problem for me..
Click to expand...
Click to collapse
I had actually "reset" the battery but only drain it to 5% before recharging as I have read that it is not safe to drain to 0%. I'll try to completely drain it tonight and recharge. Will report back.
btw, I noticed that when the battery is charged to 100%, the led stays amber for about 15-20 minutes before turning green. Is this normal or should it turn green immediately after reaching 100%?

Tried completely draining the battery and charge overnight but have no effect. The problem persists. So this is definitely not a battery problem.
I guess the last thing I can try is charging the battery with a standalone charger or another HD to see if there is problem with the charging mechanism in my phone.

The latest Telstra rom seems a bit better on battery

led amber
The led amber must turn to green
immediately after unplugging.
some thing is wrong with your charge
system .

aidinali said:
The led amber must turn to green
immediately after unplugging.
some thing is wrong with your charge
system .
Click to expand...
Click to collapse
aidinali, can you please explain what you mean? I thought the led will go off if you unplugged the charger. My problem is that after reaching 100% as indicated on the phone, the led stays amber for another 15 minutes before turning green.

Well , I'll correct & explain more....
1-when you reach %100 ,the led will turn to green immediately (if you’r phone is plugged in).
2-if you unplug ,the led will turn off (as you said ).
The problem is that since the battery meter in HD has not been defined by percentage , it doesn't match with
Apps like battery level or battlog .so when you see %100 on them , it' s not "real % 100 ".

I believe there is something wrong with the phone as the percentage usage and charging status do not match. However, since the basic HTC software does not have any battery usage in percentage, it’s hard to convince the service centre that something is wrong.
Any software that shows the battery as a percentage all have the same reading, so I assume they all rely on the mainboard for that information. There is obviously something wrong with either the charging process of the phone or draining more battery than it needs during usage.

I have 100% exactly the same problem as in the original post.
Does anyone else?
I have also tried 2 batteries and had exactly the same results with both, so I also know it is not the battery. The only app I have installed other than Dutty's 6.5 rom is Tomtom which does not need to be run for any of these issues to occur.
Any chance on warranty? I think it's software...

Try a different ROM. I've been having the same problem. I just flashed a new ROM about an hour ago (partly because Dutty's 6.5 kept freezing). I'm hoping both problems will be solved now.

i've found the latest radio rom to make a big different to battery life. 1.14.25.24_radio
the previous radio rom (1.13?) did suck the juice and made battery last 2 days less than 1.14

Try charging with a different charger. Ie. connect a USB cable on your PC and charge it from there.
I've had very similar problems with the stock charger a month after i got my TouchHD, and ended up testing with my old P4350 charger and all problems went away.
I've had similar drains even witch WiFi off, no emails, exchange or 3G access...
Now i'm getting a whole day's usage and i'm left with 30-40% battery, with 2 hours average talk time

I've tried with a number of chargers.....battery still sucks.
I've just switched from Dutty's to Energy ROM, radio is 1.14
If anything...energy drains more quickly than Dutty's
It says it drawing 350mA

Ok, I've used Energy ROM but now using Dutty's Leo. The only thing I've loaded so far is Battery Guard which say it's drawing 98mA when on standby(ie....backlight goes off). That'sa massive difference on the 250mA readings I used to get....now all I have todo is figure out which program I'm loading that is killing my battery.
That still only equates to 12 - 13 hours on a good standard battery with no use at all.

samlives said:
Ok, I've used Energy ROM but now using Dutty's Leo. The only thing I've loaded so far is Battery Guard which say it's drawing 98mA when on standby(ie....backlight goes off). That'sa massive difference on the 250mA readings I used to get....now all I have todo is figure out which program I'm loading that is killing my battery.
That still only equates to 12 - 13 hours on a good standard battery with no use at all.
Click to expand...
Click to collapse
Standard battery should last longer. Sounds like your battery may be slightly faulty. Make sure you let battery drain fully before charging, and always try charging with device off. Should help improve strength.

I had same problem when i flashed miri's rom, hd got warm and didn't last, it cooled down in standby, the answer to my problem was that the wifi was not set to save battery mode, once i set it to save power everything was ok

Used 8% in 24 hours
Fallen Spartan said:
Standard battery should last longer. Sounds like your battery may be slightly faulty. Make sure you let battery drain fully before charging, and always try charging with device off. Should help improve strength.
Click to expand...
Click to collapse
Have been trying that for a month now....something seems to have suddenly worked It only used 8% of the battery in 24 hours! I live in the rainforest with no service so cellular was turned off...wifi on, but I only accessed it about 6 times......still,nothing has changed. The same conditions would leave me with a dead battery in 7 hours previously.
Time will tell if it keeps up this well.
By the way....Thanks

So basically you're saying people should drain down the battery to 1% or so and not to 0% (device dies when battery is out) to get a better battery strength?

Seems to be the general consensus. I'm still not sure if that's what made the difference for me but previously,I would put my device to standbye when I went to sleep at 10:30pm and it would be dead by 6am

got htc hd2 2days ago had to charge 4times

hi all i have had to charge this phone so much its kinda doin my head in, last night i charged it and took it off at 6pm fully done and my 11pm after taking approx 30pics + 4vids(4min long each) it was down to very low life.
so i chargeed the battery fully again, and this time from 8am ~ 10am today my battery is at 77% i have done sofar
*backlight set @ 30%
*hspda ON
*Weather, facebook download every 1 hour;
*1call, 5min
*3 SMS got, 5 SMS sent
*1hours playing with phone (general settings)
*took 10 photos
*took 1 vid 3min long
from 100% to 77%,

Simple, turn off 3G. On regular GSM my phone was at 37% after 12 hours with at least 30min talking, lots of browsing, emails, texting, and 30 minutes GPS.

Simple, turn off 3G. On regular GSM my phone was at 37% after 12 hours with at least 30min talking, lots of browsing, emails, texting, and 30 minutes GPS.
Click to expand...
Click to collapse
did u run with 3g/hspda on before and did it improve alot or not, as i use net alot and really nead hspda

TBH I doubt you are fully charging in 2 hours. The iPhone is the same, fully charging is not till the meter says 100%, that is more likely 80%.
The battery meter may also need calibrating. Personally I would drain the battery dry by running videos etc, and then charge it back up and leave it charging overnight.

Gajet said:
TBH I doubt you are fully charging in 2 hours. The iPhone is the same, fully charging is not till the meter says 100%, that is more likely 80%.
The battery meter may also need calibrating. Personally I would drain the battery dry by running videos etc, and then charge it back up and leave it charging overnight.
Click to expand...
Click to collapse
i charge it alot longer till green light came on not two hours matey, it took two hours to lose that much life lol
ps. i will run a satnav a few hours should run life down and then recharge

My battery was draining fast too. I realised it was because it would stay connected to my data (mobile web for O2 in my case) and never disconnect. I only clicked on the notification bar and saw i was connected to my data for over 1 hour and half. That is a big battery drain. Don't switch to gsm mode - that would suck. What is the point of having such a high end phone and use it in gsm mode?
All I can suggest to you for the time being (until someone figures out how to have data connections auto disconnect after a couple of minutes) is to disable auto downloads for the following:
facebook, weather, mail, stocks, time sync, twitter etc.
You now have to check manually these items. Sucks i know but only way for me to not stay connected to data and drain my friggin battery

That happens to me too..I have everything set to update manually! No internet time no twitter,weather etc..And no other apps!!! And it still connecting by itself and stays this way for hours till i notice it!! Any ideas of what does it try to update??
(dont tell me the obvious ones!!)

My battery was draining fast too. I realised it was because it would stay connected to my data (mobile web for O2 in my case) and never disconnect. I only clicked on the notification bar and saw i was connected to my data for over 1 hour and half. That is a big battery drain. Don't switch to gsm mode - that would suck. What is the point of having such a high end phone and use it in gsm mode?
All I can suggest to you for the time being (until someone figures out how to have data connections auto disconnect after a couple of minutes) is to disable auto downloads for the following:
facebook, weather, mail, stocks, time sync, twitter etc.
You now have to check manually these items. Sucks i know but only way for me to not stay connected to data and drain my friggin battery
Click to expand...
Click to collapse
ok sounds like a good plan matey, im currently playing a video over and over to kill my battery 0% then im going to charge from no power while phones turned off, 5% life left lol....common...
i keep getting message battery low may lose data is this true will i lose data on my fone?

on the old PDA's if you drained the battery ( <1% or something like that ) your data can be gone, its like performing a hard-reset... don't know how it is now though... propably its safe, or it turns off before 0%

br3nt said:
on the old PDA's if you drained the battery ( <1% or something like that ) your data can be gone, its like performing a hard-reset... don't know how it is now though... propably its safe, or it turns off before 0%
Click to expand...
Click to collapse
You don't have to worry about that any more. A different type of memory is used. You can even take the battery out and leave it for days and all your programs and data are still there.

ok people i completely deaded the battery till it wouldnt turn on and started it charging at 15:43, its now 17:00 and still showing orange led light so i will keep checking every 15min to find out...
1) how long to charge from total flatnesss
2) how long battery last tomorrow on full charge from now to when it conks out again
will keep you updated

just for information: HD2 has a battery that needn't get totally depleted to get the full charging cycle like on older battery packs. On the contrary, the battery suffers when completely discharged. It is recommended not to leave it till the phone dies, this reduces the battery life. Charge it whenever possible. I have mine in active dock when driving in car, as well as when in office. I know the battery life could be better but well...

dusanko said:
just for information: HD2 has a battery that needn't get totally depleted to get the full charging cycle like on older battery packs. On the contrary, the battery suffers when completely discharged. It is recommended not to leave it till the phone dies, this reduces the battery life. Charge it whenever possible. I have mine in active dock when driving in car, as well as when in office. I know the battery life could be better but well...
Click to expand...
Click to collapse
i dont mean to say ur lieing or anything but do u ave evidence of this, as so many have told me to totally deplete the battery every time, in a few forums around the net

DAMIEN123_666 said:
*took 1 vid 3min long
Click to expand...
Click to collapse
I would imagine video recording puts quite a strain on the battery.
Also don't forget that gorgeously massive screen runs from a 1200mAh-ish battery. I have the Xperia X1, with a 1500mAh battery. When I get the HD2 I can't help but feel there just won't be enough juice to go around.
Lower battery capacity + bigger screen = ever-so-slight reduction in battery.
I wonder whether captive or resistive screens take more power?

I'm using wi-fi at home for all data and the battery is lasting forever!
Strongly recommend tying this - see if it works for you?

ok all i have the full charge time of the battery, from complete flaness 0% life to full charge 100% life time taken
start 15:43 ~ finish 18:12 = TOTAL 3:19min.
now i will take note of all i do on the device and post results tomorrow or the next day if im lucky and it last that long lol

DAMIEN123_666 said:
start 15:43 ~ finish 18:12 = TOTAL 3:19min
Click to expand...
Click to collapse
Also the way you charge your battery affects the charge time.
Example:
- Charging through phone using stock charger
- Charging through phone using third-party charger
- Charging using a short USB connection
- Charging using a long USB connection
- Charging through phone with phone off
- Charging through phone with phone on
- Charging through official external battery charger
- Charging through third-party external battery charger
Sometimes stock accessories are slower, others, not so. Some manufacturers refer to a "power charge", for example some Sony Walkmans. For that to work though the phone / device has to be off. Thats how they get those 3min = 3hr charge times.

DAMIEN123_666 said:
ok all i have the full charge time of the battery, from complete flaness 0% life to full charge 100% life time taken
start 15:43 ~ finish 18:12 = TOTAL 3:19min.
now i will take note of all i do on the device and post results tomorrow or the next day if im lucky and it last that long lol
Click to expand...
Click to collapse
Erm that's not what I advised. The aim was to re-calibrate the battery meter. All you have done is wait till the batery meter says 100%, whether in reality it's 80%, 75% or whatever. A full overnight charge would have guaranteed that 100% = 100%.
I don't see what you've done other than continue to use it the same as you already were.
I said I doubt you can get 100% in 2 hours, 3:19 isn't much more.

DAMIEN123_666 said:
i dont mean to say ur lieing or anything but do u ave evidence of this, as so many have told me to totally deplete the battery every time, in a few forums around the net
Click to expand...
Click to collapse
No he's right, completely draining the battery isn't good and shouldn't be done too often. regularly topping the battery up is the way to go.

Gajet said:
Erm that's not what I advised. The aim was to re-calibrate the battery meter. All you have done is wait till the batery meter says 100%, whether in reality it's 80%, 75% or whatever. A full overnight charge would have guaranteed that 100% = 100%.
I don't see what you've done other than continue to use it the same as you already were.
I said I doubt you can get 100% in 2 hours, 3:19 isn't much more.
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Click to collapse
hi i plan to monitor usage till battery drops dead and then tomorrow night or the net if im lucky i will redo the recharge test over night

[Q] Battery issues

Ye, my battery just went from 48% to 3% in about 3 minutes. Does anyone have any idea why this is?

Same problem here. From about 43 % down to 7 % while it started to charge the battery with the original charger. Afterwards the Tab didn´t charge at all. Battery drained and got very warm.
I Called Vodafone and was told i have to send the Tab in for fixing. I hate waiting for the tablet 3 weeks.
Update: After 2 hrs. of waiting the Tab cooled down and i was able to start it again. Did a factory reset and was able to charge again with the wall mount charger.

Just wanted to bump this as my battery life is miserable and it discharges really fast in standby...
My HTC desire has been on for 52 hours, used for a lot of stuff and is at 20% battery.
The Tab charges to 100%, I unplug it at night and in the morning it has lost approx 10%, I leave it a few more hours and it't down to around 60%. This is with no use and no apps running!
I've tried killing apps or leaving them in memory and it doesn't seem to make much difference. I also use setcpu and have a profile where the CPU speed decreases when in standby to conserve battery?!
If I charge to 100% and use it constantly, I get fair life out of it maybe 4-6 hours of light use - some streaming over wifi, web surfing, kindle, sudoku etc. If I use it occasionally or heavily though, it dies very quick and if I leave it at about 40% on the evening, it's generally dead in the morning.
Why does it discharge so fast in standby??

Check to see if it continually searching for a signal. I've noticed that mine loses a lot of power constantly searching for a signal, cellular and wifi. So, I used airplane mode to conserve power. Remember that it syncs to different services that require it to periodically download data. That may be your issue.
Sent from my SCH-I800 using XDA App

Thanks Chuck, I use it in airplane mode all the time and only use web over wifi (bought unconnected in the UK). Would it still be syncing for email etc? I didn't think it could turn on wifi and sync itself but only when I turn wifi on. I always turn wifi off when not in use. I had problems with widgetlocker asking for superuser permission quite often and that killed the battery quicker so I removed that until it's fixed and saw an improvement.
I'm not seeing the times that other people are though, losing at least 10% overnight and there's nothing really running.
I installed battery doctor and the times it quotes are high for different types of usage and nowhere near what I'm getting.
I'll make sure email and calendar are set to manual update, adjust brightness etc and see what happens. It seemed better when I first got it so perhaps an app is draining it? I installed system panel to monitor this but it's hard to see what is actually draining it, any recommendations anyone???
Quite disappointed at the moment, ipads barely drop 1% overnight and I'd rather not have to turn it off to conserve battery when it should maintain it in standby...

Check the task manager and see what application are running. Also you can go in settings- about device - battery use to see if a specific application is using your battery out of normal. Also , the display is generally the battery hog, you may have set it to a super high level. One last thing you may have the buggy 3d gallery app, and it will show in the battery usage.
P_

this is an interesting problem. its very similar to the Apple Macbook Air.
The Macbook Air was very thin - very nice looking - however it needed to depend on wifi to do most things.
the association i am trying to build here is this: the Tab needs a bluethooth headset so you dont get all your calls broad-casted over speakers and that could drain the battery a lot.
for me the battery drainage didnt seem so bad and its been on for the last 36 or so hours. the battery icon didnt look like it moved so much and i was impressed considering this thing had a gigantic battery. then i loaded up a utility that read the battery and said i had 59% so my jaw dropped. not only is the battery indicator wrong there maybe rogue processes casuing the battery drainage. and this is on 2.2 which is supposed to be somewhat battery efficient.
i dont know - frustration is what i am all about here with this thing. it seems that every time i buy a new android device i want to move to another android device. no one is getting the damn thing correctly setup.

Am at work right Now, Charged the tab overnight, just few minutes ago my battery said 60% left and now the tab is completely dead, wont turn on, I ll wait until i get home to charge, fingers crossed.

Change the battery...
Sent from my HTC HD2 using XDA App

shubh.27hd2 said:
Change the battery...
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
its been charging for 2 hours now and battery is not even warm to the touch plus no power yet... if charging is what you intended....

more than 3 hours of charging and counting and still no sign of life...This device is just 8 days old today from Brand new...

mudstuff said:
Just wanted to bump this as my battery life is miserable and it discharges really fast in standby...
My HTC desire has been on for 52 hours, used for a lot of stuff and is at 20% battery.
The Tab charges to 100%, I unplug it at night and in the morning it has lost approx 10%, I leave it a few more hours and it't down to around 60%. This is with no use and no apps running!
I've tried killing apps or leaving them in memory and it doesn't seem to make much difference. I also use setcpu and have a profile where the CPU speed decreases when in standby to conserve battery?!
If I charge to 100% and use it constantly, I get fair life out of it maybe 4-6 hours of light use - some streaming over wifi, web surfing, kindle, sudoku etc. If I use it occasionally or heavily though, it dies very quick and if I leave it at about 40% on the evening, it's generally dead in the morning.
Why does it discharge so fast in standby??
Click to expand...
Click to collapse
I am experiencing the same thing. Tab on flight mode and charged to 100% overnight. Unplugged at 9am, still on flight mode with no apps running, and it is 88% at 2pm.
12% drop in 5 hours with no usage whatsoever is way too much imo, comparing let say to my HD2, even not in flight mode. Wonder if they have a bad batch of battery for certain tabs........

Just wanna report back after my last post. When the percentage was dropped to 85%, I did a reboot. And guess what, now it displays 95% !!!!!!
5% drop from the morning til now in flight mode seems right and okay. Does it mean the tab is miscalculating the percent left?
PS.
I have been following the voltage in Spare parts this morning. All settings are the same (no apps opened, same screen brightness and in flight mode. Only turn on to record voltage)
94% - 4087mV
91% - 4081mV
88% - 4075mV
85% - 4067mV
But then after the reboot
95% - 4040mV
Man, I am not sure whats going on here........

shinji21 said:
Just wanna report back after my last post. When the percentage was dropped to 85%, I did a reboot. And guess what, now it displays 95% !!!!!!
5% drop from the morning til now in flight mode seems right and okay. Does it mean the tab is miscalculating the percent left?
PS.
I have been following the voltage in Spare parts this morning. All settings are the same (no apps opened, same screen brightness and in flight mode. Only turn on to record voltage)
94% - 4087mV
91% - 4081mV
88% - 4075mV
85% - 4067mV
But then after the reboot
95% - 4040mV
Man, I am not sure whats going on here........
Click to expand...
Click to collapse
let me jump in here again and share a similar deli-ma i had with my X10i.
while i was messing around with some custom roms i decided to stick to one that looked somewhat nice. well the funny thing is the battery indicator would always display 100% and for about 4 hours it would drop ever so slightly. then i removed the battery and put it back in -- the battery indicator showed 0% and i got a red light flashing ....
after screwing around with it for a bit i re-flashed the stock firmware from Sony-Ericsson and magically my battery meter and my battery worked fine.
so to sum up -- it maybe a software issue like the one i had on my SE X10i above?