Battery empty as fast as the speed of light - Tilt, TyTN II, MDA Vario III General

I know those Pocket PC devices drain their power very very quickly, but when I wifi for let's say about 5 minutes on some websites, my power is drained like 10 percent maybe. Is that extreme or 'normal' for the kaiser?
On the other hand I must admit that when I do nothing with my kaiser it can last very long without recharching.

Which rom and radio are you using? These devices are not exactly renowned for their great battery life (the cost of 3g and hsdpa), but there are ways to optimize them...

PDACORNERultimate. But I also used a HTC P4350 earlier, and it was all the same with the battery life , just wondering how I can measure what battery is better because I have 2 tytnII's until tonight, so I was wondering how I can measure what the best one is .

ALL batteries lose the ability to keep a charge as they get older. Any battery over a year old should be highly suspect.
Get the Tytn II that appears newer, then get a BRAND NEW battery for it

burtcom said:
Any battery over a year old should be highly suspect.
Get the Tytn II that appears newer, then get a BRAND NEW battery for it
Click to expand...
Click to collapse
A new battery cured my fast discharge problem. At the time Amazon had the best price on batteries.

I've observed with my TyTnII (1yr old) that the battery drains faster from 100% to 70%. However, it retains charge from 70% to 0% for a longer time.

_MsG_ said:
when I wifi for let's say about 5 minutes on some websites, my power is drained like 10 percent maybe.
Click to expand...
Click to collapse
A 10% change on the meter means nothing. To evaluate your battery life/drain, start with a fully charged battery and run it down completely until the PDA switches off.
As said above, the percentage reading is approximate and won't always go down in a linear way. It can go down from 100% to 30% in one hour, then take 3 more to go down to 0.

I think you are using the wrong charger. The charger u are using is nog strong enough. I had the same problem. You need the original charger.

Related

first 25% of battery drops fast?

Ok so this is what i noticed has been happening with my phone...
I wake up in the morning and i unplug my phone from charger at 100% battery life...
after about 1-2 hours of no use (outside of occasional check of time) and no programs running i notice that 25% of life has diminished...
i have turned 3g off and done most of the kaiser tweak settings that help with battery life. for the rest of teh day i can use the phone and battery life runs normally but it seems the first 25 to 30% drops real fast without use
is everyone experiencing this? is it normal?
KP
The problem lies in your first sentence. "I wake up in the morning and unplug my battery." You are charging your battery too much thus killing it's battery life. I only charge my phone in the day while I'm at work. That way I can unhook it when it's fully charge. I would go on ebay and type in OEM battery Kaiser. You can pick one up for 15-30 dollars new.
From what I understand. Leaving your battery in the charger when it is fully charged should not damage the battery as long as its not there for an excessive amount of time but i might be wrong. Either way i have no way of charging the phone during the day as im on the go most of the time so this would mean even if i get a new battery it wont matter because it wile eventually do the same as i have only used this phone for about 3 or 4 months now. any other possibilities or solutions?
or should i just take it as it is and just buy a new battery maybe a bigger seido?
I thought Lithium ion batteries have overcharge protection. I charge mine overnight which I am sure a lot of others do also with no negative effects.
netboy said:
I thought Lithium ion batteries have overcharge protection. I charge mine overnight which I am sure a lot of others do also with no negative effects.
Click to expand...
Click to collapse
I do... Maybe I shouldn't?
I would hope it has Overcharge Protection!!!
With NiCad Batteries if you overcharged them you would kill the life of the batteries.
And while all batteries do this LiIon are least tolerant. If you overcharge a LiIon battery, that is without Overcharge protection, the LiIon Battery with BURST INTO FLAMES! Thus the problem with the Sony Batteries that caused all those Laptop battery recalls.
gqstatus0685 said:
You are charging your battery too much thus killing it's battery life.
Click to expand...
Click to collapse
Thats total BS with lithium batteries.
To the OP: Try running down your battery completely once, until the phone switches off by itself, then recharge fully. If you never do it and always recharge before the battery is empty the battery's power meter can lose its calibration over time and display weird things.
If it doesn't help, and you can notice a drop in overall life time you might need a new battery.
I have the exact same "problem" with my Tytn II.
Is slows down evenly though. (So the first 5 % of battery vanishes in minutes basically while the last 5 % can last for an hour, when it's half full % will last somehwere in between these two extremes).
Personally I've just interpreted this as poor measuring done by the hardware and/or software. (Ie I don't think the battery performs better the less full it gets as the meter in Windows would have me think)
kilrah said:
Thats total BS with lithium batteries.
To the OP: Try running down your battery completely once, until the phone switches off by itself, then recharge fully. If you never do it and always recharge before the battery is empty the battery's power meter can lose its calibration over time and display weird things.
If it doesn't help, and you can notice a drop in overall life time you might need a new battery.[/QUOTE
thanks ill try it out as soon as i get a chance...
kp
Click to expand...
Click to collapse
may seem a daft point but after draining the battery, dont charge with the phone turned back on. gives a fuller charge cos its not being used and makes it quicker to charge, lol
duke0102 said:
may seem a daft point but after draining the battery, dont charge with the phone turned back on. gives a fuller charge cos its not being used and makes it quicker to charge, lol
Click to expand...
Click to collapse
Hmm...I don't see how turning my phone off to charge would increase the charging rate dramatically. My phone in standby mode uses 1% every 2 hours.
depends highly on roms and especially on radios.
with a crappy rom, battery could drop as fast as 10% per hour.
with a decent rom, battery drops in standby mode at a rate about 2% per hour.
duke0102 said:
may seem a daft point but after draining the battery, dont charge with the phone turned back on. gives a fuller charge cos its not being used and makes it quicker to charge, lol
Click to expand...
Click to collapse
If the phone is on but on standby that barely changes a thing. If it's on, with display illuminated then yes it might take you an extra 20 minutes to charge.. no big deal either.
*UPDATE*
ok so i drained my battery last night completely(turned on navizon, tt7, and skyfire) which took me about at most 2 hours.
Put it in for a charge
woke up at 9 and checked to see and it was 100%
I have push mail set to update every hour and i also run pocket sportscenter autoupdates which updates every 10 to 15 minutes
I used the phone for 5 minutes of calls
5 minutes of web surfing
a few text messages
and the occasional time check
at 6:30 pm battery life was at an amazing 90%
i was thrilled.
i continued to surf the web heavily from 730 to 8
a few more text messages
at 9 battery was at 67%
so i gotta believe that draining the battery helped recalibrate it...
i guess every 2 or 3 months i got to drain it out and give a full charge
thanks for the help guys
really appreciate it

im i dreaming this diamond reality or what

when i got this diamond phone last week the battery performance
was bad serving me with less then a day worth of power where i
had to buy a second battery.
now that i have been off from work for a few days (3 days) i finaly
had the chance to cain this phone properly eg. flipping wifi on/off
through out the day listening to shoutcast, lenghty periods trying
to setup LAN, listening music while out on the road and checking
emails, looking on the net, yapping on the phone and sending txt messages.
to my supprise the battery seem to be holding up pretty good. now it
appears to be holding out till the end of the day where before i had to
carry two batteries now i think i can get away with carrying just one.
here are my stupid questions
1, does htc batteries get better performance after multiple charges?
2, did i have a semi faulty battery and now a miracle has happend?
3, am i just dreaming that the more i use the longer the battery stays on?
today i charged the bat. at 9am (ish) and now its 3,45pm. i still have 3 bars
remaining im supprised as from before a few days ago this was not the case.
im using the daimond with no mods and standard battery.
HD
suprised!
HtcDia said:
when i got this diamond phone last week the battery performance
was bad serving me with less then a day worth of power where i
had to buy a second battery.
now that i have been off from work for a few days (3 days) i finaly
had the chance to cain this phone properly eg. flipping wifi on/off
through out the day listening to shoutcast, lenghty periods trying
to setup LAN, listening music while out on the road and checking
emails, looking on the net, yapping on the phone and sending txt messages.
to my supprise the battery seem to be holding up pretty good. now it
appears to be holding out till the end of the day where before i had to
carry two batteries now i think i can get away with carrying just one.
here are my syupid questions
1, does htc batteries get better perfomance after multiple cahrges?
2, did i have a semi faulty battery and now a miracle has happend?
3, am i just dreaming that the more i use the longer the battery stays on?
today i charged the bat. at 9am (ish) and now its 3,45pm. i still have 3 bars
remaining im supprised as from before a few days ago this was not the case.
im using the daimond with no mods and standard battery.
HD
Click to expand...
Click to collapse
hiya mate,
I am going through the same thing. First day I got the phone and battery was awful about 4 hours it lasted me! very shocked. but it is holding out.
I did charge the phone initially for about 12 hours as specified but don't know if that helps.
what i tend to find with new mobiles is that you have to charge fully and then DISCHARGE FULLY the phone numerous amount of times to get it to perform to the best of its abilities. I don't think its anything to do with HTC batteries, just the fact that new batteries have never been used and need to learn!
RAF_SHC said:
hiya mate,
I am going through the same thing. First day I got the phone and battery was awful about 4 hours it lasted me! very shocked. but it is holding out.
I did charge the phone initially for about 12 hours as specified but don't know if that helps.
what i tend to find with new mobiles is that you have to charge fully and then DISCHARGE FULLY the phone numerous amount of times to get it to perform to the best of its abilities. I don't think its anything to do with HTC batteries, just the fact that new batteries have never been used and need to learn!
Click to expand...
Click to collapse
you are half right. this battery life is improving if you keep charging it but it is not advised to fully discharge them.
the fully charged-fully discharged method was for the old batteries with "memory".
somewhere in this forum, in the trinity forum somebody experimented the two ways of charging-discharging the battery. the conclusion was that it is better to charge the battery anytime, any occasion u have.
Indeed, the battery's performances (and this is applicable to all common batteries) will increase by time until it reaches its max capabilities.
To gain performance, the battery has to discharge and charge very frequently, or better, continuously. I don't really know how the Diamond manages it (meaning if the battery is full, will the device still get power from the battery if it is plugged on, or will it drain power from the cable. It could also drain from battery if it is fully charged and charge it in the same time, or it could simply always take it from the cable and charge the battery in less time)
The reverse is also true, meaning if you don't discharge/charge your battery frequently enough, its performances will decrease by time.
Also, if your battery discharges and charges all the time, it's lifetime will be longer than a battery that is only used once in a week.
I don't know if I made it clear, lol.
By the way, don't think that if you keep charging your battery you will end up with weeks of battery, there is a limit and it is 850mAh on the stock battery, if I remember correctly.
thanks for the tips some say discharging is good and some say dont.
all i know its 8:35pm and i have only used 1 bar from around 4:30
which now leave me with 2 bars. im jumping for joy because normally
by 6pm ish the battery would have already died.
with all the hammering today i cant believe it only took 2 bars in nearly
12 hours and thats with no extra charge from the psu and only 5 usb
connections to the pc to sync and add files totaling 2 - 5 minutes
on each connection.
now i can officially say this phone is "DA BOMB"
time to sell the e90 and e65
The thing that kills the battery on this phone above everything else is the GPS - knocks it out in 90minutes or less. If you were having fun (even for a few minutes) with it in your first few days, this might explain it...
GPS?
konsta819 said:
The thing that kills the battery on this phone above everything else is the GPS - knocks it out in 90minutes or less. If you were having fun (even for a few minutes) with it in your first few days, this might explain it...
Click to expand...
Click to collapse
yeha that would explain it but the thing is I haven't even installed TomTom or any other GPS related app!!! weird. but i've had it for about 4 days now and battery does seem to improve slightly on a daily basis.

Battery issue???

I think I might have a problem with my battery, but I'm not sure. I had it on the charger for 12 hours. So the battery should be full. When I took it off the charger, the status bar indicated that it had dropped down a notch. Is this normal? I was expecting the battery indicator to be fully shaded in white.
Ok. So I restarted the phone. Now the battery indicator is showing that it's completely full. Hmmm.
This happened to me too today. I'll try a reboot...
Sent from my HD7 using Board Express
Please remember that your battery needs some time to kick in and settle before you'll get full charges/power and correct indicators. If you just got your phone on Monday, wait about a week, and your phone should last longer and display more accurate approximation of battery life.
If it has been much past a week though, and your battery life is still significantly poor, then it may be your battery, device, or how you have the system configured.
I've commented on this a few times before, the same thing happens to me.
Its obviously a bug with the OS or something as I am now on my second HD7 and it does exactly the same.
let the phone battery drain out then let the phone charge completely with out using it. You will see a huge improvement on your battery life and the phone will charge alot quicker. That will also fix the battery indicator bug.
Ariel is right.
Remember for best optimization of any battery is when u use it 0% to 100% and then let is drain to 0% again.
i have the phone since a week with 5 charges i am not happy YET with the battery. Hope it opens up as ppl are saing.
I forced my battery dry a couple of times between charges using the HTC Flashlight app.
Run the app on maximum beam (you might have to wake it up every now and again) and the battery drains very quickly. I turned on wifi and set some music playing as well for good measure.
Then charge using the supplied charger rather than a PC USB connection. I'm not sure if that's meant to make a difference but mine charges up much faster that way.
Charging your phone through USB to PC always takes longer then using the charger
I'm getting about 15 hours of battery per charge. That's with moderate use (text messages, e-mail web browsing, a couple phone calls). This is MUCH better than when I first got my HD2. The battery would drain about 1% every 3 minutes. It was absurd. I'm pretty content with the battery life thus far. Windows Phone 7 is such a pleasure to use.
friend has an evo and he's trying to sell ot to get an hd7 lmao
Fuse8499 said:
I think I might have a problem with my battery, but I'm not sure. I had it on the charger for 12 hours. So the battery should be full. When I took it off the charger, the status bar indicated that it had dropped down a notch. Is this normal? I was expecting the battery indicator to be fully shaded in white.
Click to expand...
Click to collapse
I got the HTC Surround and I noticed the same thing. After coming off a full charge (the whole night) I loose what looks like 5% of the charge within the first 5 minutes. Sometimes it's after as much as replying to a text.
Hopefully the battery has to 'settle in', as others have suggested.

Extended Battery Problem

Please help i have bought Extended Battery 2400mAh for my HD2 but the battery is discharging same as with normal battery, the strange thing is that when i restart phone after discharging to 0% it says 66% battery again. After that i discharge again to 0% restart and again 53 but these 53 discharge very quickly.
Is there something im doing wrong?
these numbers are from WINMO or Android?...which version/ROM of WINMO?/Android?
Its from WinMo
its Artemis v42/Radio 2.15
Same Problem - suggestion ...
jirka607 said:
Its from WinMo
its Artemis v42/Radio 2.15
Click to expand...
Click to collapse
Hello,
I also use a HD2 now with even a 3400 maH-battery. Also I had to notice that discharge is with this battery the same as with 1230 maH-battery.
First: thank you for your tip, I now will try also to restart my HD2 before re-charging.
Second: this phenomena means at my knowledge that battery-controler has problems with recognition of used battery: so I think that HD2 thinks having still a 1230 maH-battery, even if a 3400 maH-battery is used with it.
This could be then in my eyes a software-problem (would be solvable) - or, in worst case, a hardware-problem, meaning, that battery-controler of HD2 is unable to recognize batteries stronger than 1230 maH-capacity.
If you get more knowledge about that, I would be glad if you could tell me.
Thank you very much for proceeding,
inuli
There is one tip try it :
Discharge battery till phone turn itself off than take out battery for 1minute
Put the battery back
Start the phone
discharge again till switch off
again 1 minute out
repeat till phone turn itsellf even when booting Winmo
Take battery again for 1minute out
put back batt and charge with phone turned off
when charged take battery out for 1 minute again
put battery back and start up the phone
i had this problem with my extended battery. I was curious so i opened it up and found it was two batteries stuck together.
pics here: http://forum.xda-developers.com/showthread.php?t=815231&highlight=extended+battery
I bought the official 2300mah extended battery with kickstand after reading problems with 3rd party extended batteries and the poor quality of back cover. I bought the official htc from ecell on eBay for £25.95 delivered - no problems. Somtimes it's worth paying the little extra for quality and the difference in price is not that big instead of wasting £10-15 on these 3rd party batteries...
Well maybe i will buy the official sometime but this one was fr 13USD so its bad luck but i can live with that restarting charge
it better to buy a oficial htc batery like i have one .with havy using its last about 40 h . so dont bay fake bateries.
But maybe i know how to fix it some one here at XDA talk ed about wiping battery stats maybe it will help
http://forum.xda-developers.com/showthread.php?t=827355
Here it is
I went into the T-Mobile store and asked the guys about the extended battery the other day and here's what the guy told me. The HTC official extended battery is basically two batteries in one package, just as jjbdoggg mentioned. When the charge runs out, if you power back up you'll have access to the 2nd battery. The thing is, they don't really instruct you on how to properly charge the extended battery.
When you first buy any cell phone battery, you want to charge it 100% before using it, some even say to charge it two to four hours over 100%. With the extended battery, you have to do this twice, first on the initial charge, then again on the second battery. Otherwise you will run into discharge issues like you've mentioned where the battery will drain faster than normal. I believe this is because the batteries have charge memory built in, but I'm not positive.
Anyway, make sure that if you do end up buying one of these batteries, HTC official or not, (I bought a $15.00USD one and it works just the same, just no kick stand... but it does have a nicer battery cover.) you need to charge both batteries like this:
1.) Charge 100% + 2-4 hours more if possible
2.) Drain battery completely to switch over to second battery
3.) Charge second battery 100% + 2-4 hours more if possible
4.) Drain battery completely
5.) Repeat steps 1-4 once more and your battery should function as expected
wafflefaust said:
1.) Charge 100% + 2-4 hours more if possible
2.) Drain battery completely to switch over to second battery
3.) Charge second battery 100% + 2-4 hours more if possible
4.) Drain battery completely
5.) Repeat steps 1-4 once more and your battery should function as expected
Click to expand...
Click to collapse
Thank you i will do it properly
get the original extended battery. also the 2300mah battery from the company "leicke" is working for me. i had a cheap 2400mah chinese battery before and had the same problem.
the thing is, that these chinese batterys are faking, they are normal ones because the driver of the hd2 origininally didnt support bigger batterys in the first roms.
the chinese batterys are out of date and also the capacity is mostly a giant fake!
my battery did cost 21 euro incl shipping and is working correctly.
dont try to fix the problem with hints and tricks or calibrations, it will NOT work with the cheap batterys! i already tested it
Well thats mazbe true but i have mz from china for 13USD i have calibrated it and now it stay 2 days then i pull out and put back the battery and i have another 1,5 day
What I suggested is not a trick, this is just how the manufacturers recommend you charge your batteries. If you don't want to follow instruction and do your own thing fine, but it sounds like jirka has solved his problem.
wafflefaust said:
I went into the T-Mobile store and asked the guys about the extended battery the other day and here's what the guy told me. The HTC official extended battery is basically two batteries in one package, just as jjbdoggg mentioned. When the charge runs out, if you power back up you'll have access to the 2nd battery. The thing is, they don't really instruct you on how to properly charge the extended battery.
When you first buy any cell phone battery, you want to charge it 100% before using it, some even say to charge it two to four hours over 100%. With the extended battery, you have to do this twice, first on the initial charge, then again on the second battery. Otherwise you will run into discharge issues like you've mentioned where the battery will drain faster than normal. I believe this is because the batteries have charge memory built in, but I'm not positive.
Anyway, make sure that if you do end up buying one of these batteries, HTC official or not, (I bought a $15.00USD one and it works just the same, just no kick stand... but it does have a nicer battery cover.) you need to charge both batteries like this:
1.) Charge 100% + 2-4 hours more if possible
2.) Drain battery completely to switch over to second battery
3.) Charge second battery 100% + 2-4 hours more if possible
4.) Drain battery completely
5.) Repeat steps 1-4 once more and your battery should function as expected
Click to expand...
Click to collapse
There is no second battery, it is a single battery with 2 cells, soldered together in parallel giving the higher capacity.
If your phone's charging firmware is not compatible then you need to update your ROM.
What you are doing with the above is charging the battery to 50% and then charging it to 100%
xaccers said:
There is no second battery, it is a single battery with 2 cells, soldered together in parallel giving the higher capacity.
If your phone's charging firmware is not compatible then you need to update your ROM.
What you are doing with the above is charging the battery to 50% and then charging it to 100%
Click to expand...
Click to collapse
Do you own one of these or something? Because it doesn't sound like you have ever used one...
Yeah wafflefaust Thank you very much i have propperly charged it and its as i told up to 2 days on first part and 1-1.5day on 2nd part so Thank You
wafflefaust said:
Do you own one of these or something? Because it doesn't sound like you have ever used one...
Click to expand...
Click to collapse
Yes I do own one.
I've also been making my own custom lithium batteries out of individual cells for over 5 years, I know battery technology.
I'm not sure if you've ever used the specific batteries we're talking about however. They do ACT like two separate batteries, but are packaged as one "extended" battery. When one runs out, you can usually pull the battery for about 5-10 seconds and when you put it back in, voila 100% battery left... (that is if you know how to properly charge a battery...)
Maybe you've figured out some sort of magic trick to make these batteries drain in parallel or serial? But the way it stands, the battery that I have does not act like you're suggesting.

my experience with a cheap aftermarket hd7 battery

Recently I bought a cheap battery which is obviously from china.
And it looks like the original HTC battery with the same black colour.
On first use it came with 80% charge level . I used the battery until it drained . It lasted the same as my original worn out battery of 6 months at the same percentage (maybe due to old batt stats in the is)
the following charge cycles( full drain and full charge)
First full charge cycle -battery only charged to 72%.
2nd cycle - battery charged to 75%
3rd cycle -battery charged to 83%.
one of the major difference is that with this battery,the phone shows that red juice cylinder , when it starts charging from 0%. Something I didn't saw with the original HTC battery after mango beta .
The first 2 cycles the battery exhibited the rapid drain symptom after plugging off the charger .
after the 3rd cycle it does not have this behavior and drained normally.
After this 3rd cycle the battery indicator was stuck at 80%. Used the phone for 3g browsing for 30 mins . Restarted the phone and it showed 91%. Used till 77% and charged the phone to 100%
At this time the battery is doing great . Will do another cycle a few days later to see how it goes.
In between these charges I had some small partial charges.
So far the battery now holds better and able to surf continuously on 3g for 40 mins and its at 90%, WiFi off , location on ,bt off ,battery saver on ,
the funny thing is that it is like the same quality original HTC battery .
is is mango with latest firmware update.
there are some problems with the original HD7 HTC battery.
mine did not last long before it died.
HTC needs to do QA on its batterires. They are the worst ever used
I recently (two days ago?) had a big 3500mAh battery arrive which i ordered from the internet, i paid about £14 for it. I've noticed it's a little weird in terms of performance, and i'm not sure if that's anything to do with the HD7 software side, or if i've just been ripped off.
3500mAh is ~3x the capacity of the stock HD7 battery so i was expecting charging times to be way, way longer but also for my phone to last a good deal longer too, but i've just been seeing major inconsistencies. My new battery would charge and discharge faster than the stock one that came with my phone, it'd stick on 99% charging, it's really confusing.
At the moment, it seems to be behaving itself with 56% time since last charge 15 hours, time remaining 9 hours. I have reason to suspect that when you use a new battery that the battery information Windows Phone 7/7.5 provides is WILDLY inaccurate, and it might take some time for the software to get used to the new battery.
I'm not sure, i'm just finding batteries really confusing!
Epsis said:
I recently (two days ago?) had a big 3500mAh battery arrive which i ordered from the internet, i paid about £14 for it. I've noticed it's a little weird in terms of performance, and i'm not sure if that's anything to do with the HD7 software side, or if i've just been ripped off.
3500mAh is ~3x the capacity of the stock HD7 battery so i was expecting charging times to be way, way longer but also for my phone to last a good deal longer too, but i've just been seeing major inconsistencies. My new battery would charge and discharge faster than the stock one that came with my phone, it'd stick on 99% charging, it's really confusing.
At the moment, it seems to be behaving itself with 56% time since last charge 15 hours, time remaining 9 hours. I have reason to suspect that when you use a new battery that the battery information Windows Phone 7/7.5 provides is WILDLY inaccurate, and it might take some time for the software to get used to the new battery.
I'm not sure, i'm just finding batteries really confusing!
Click to expand...
Click to collapse
try using a custom rom, the battery usualy lasts longer. the sdcard tweak works well . i beleive its a prblem with how wp7 OS handles the sdcard power management
i beleive the OS uses power consumption vs power capacity to judge the gauge. also u whenever u full charge the battery , u need to let it rest for a few hours. so ideally every evening u get home, charge it to 100 % from whatever is left with and unplug from the charger immediately after full. leaving it ont he charger whole night seems to drain it when u take it out fromt he charger next morning and start using it.
try using this app battery discharger ( free ) from the marketplace: it calibrated my battery well
when its close to dying like 20%, just run this app , and fully drained, charge full again
now my battery last 30+ hours on idle. i am not sure if yr 15 hours is correct on that size u have ,
Gishum said:
there are some problems with the original HD7 HTC battery.
mine did not last long before it died.
HTC needs to do QA on its batterires. They are the worst ever used
Click to expand...
Click to collapse
yep i agree, the original HTC batteries seem to be worst than the cheap aftermarket versions

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