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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.
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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.
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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
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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
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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
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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
i flashed my Diamond 3 times since i bought it 1 month ago.
i started with 1.34 ita, then 1.37 ita, 1.93 ita and now i'm on SwiftBL-WWE-Diamond-ROM-v5.6.
Diamond is my work phone, now i am in holidays so i do not use it all day long but it is turned on for eventual calls.
Since i put 1.93 and still now with swiftBL i notice that the battery life is shorter. At now, in stand by mode, only keeping it turned on, the battery lasts less then 5 hours. With 1.37, making calls sendig sms life was around 6hours or more.
I must charge my phone 2 times a day and put for another charge near midnight before go to bed for all night long. Batteries like charge cicles but now im thinking this is too much stress for diamond battery.
do u think it is broken? how long is your diamond phone battery life?
i probably buy another battery and a car charger so i can charge it in any place, but i would be glad for more efficency.
anyone of you knows how much thick is extended battery?
thanks for answers
There are pictures of the extended battery in the accessories forum - pretty much where you would expect to see them.
That does sound like odd behaviour to me though for your battery. If I don't touch my GPS, make a couple of brief calls and send a few texts, whilst keeping in 2g mode, I expect to see about 40hours from a charge.
I'm experiencing a similar behavior with 1.93 ROM and 1.00.25.05 radio firm.
I'm currently wondering if S2U2 is the cause.
_Mystique_, do you use S2U2 ?
I use S2U2 with mine - I have been using the new radio and ROM from Dutty.
Just in standby with push mail on the battery lasted of 36 hours from friday. sundays charge lasted only 24 with the same usage? apart from 10 mins on teeter
i had about the same issue - i was charging it about twice a day to keep it going. i took it back to phones4u in here in the UK - after a bit of discussion and getting an error code from Orange - they gave me a new one - and its about 50 times better! the battery lasts much longer and the signal is better! my theory is that i had a faulty aireal or something - it had terrible reception, and because of that, more battery power was used trying to get a signal... But i might be wrong!
_Mystique_ said:
i flashed my Diamond 3 times since i bought it 1 month ago.
i started with 1.34 ita, then 1.37 ita, 1.93 ita and now i'm on SwiftBL-WWE-Diamond-ROM-v5.6.
Diamond is my work phone, now i am in holidays so i do not use it all day long but it is turned on for eventual calls.
Since i put 1.93 and still now with swiftBL i notice that the battery life is shorter. At now, in stand by mode, only keeping it turned on, the battery lasts less then 5 hours. With 1.37, making calls sendig sms life was around 6hours or more.
I must charge my phone 2 times a day and put for another charge near midnight before go to bed for all night long. Batteries like charge cicles but now im thinking this is too much stress for diamond battery.
do u think it is broken? how long is your diamond phone battery life?
i probably buy another battery and a car charger so i can charge it in any place, but i would be glad for more efficency.
anyone of you knows how much thick is extended battery?
thanks for answers
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Click to collapse
Hi
I had this issue as well, until I have stop sync my calendar
I do not understand why, but for now I am not sync it
i have a Diamond branded "TIM", and also my battery last about 10 hour without using the phone, always in standby.
I tried switching off the phone module and the battery last about 40h.
So for sure the problem is the aerial/phone component.
I will send the mine to htc in warranty, because i think that 10 hour in stand by is not the normal behaviur of this phone.
also i tried 2 spare "chinese" battery, from ebay, but all the results are the same.... so for sure aren't the battery.
Bye
Question:
I'm going to get my Diamond soon. How long the battery must be charged for the first time? 3 hours or more?
Why it is not good to empty the partially charged battery and then refill it to 100%?
hantoucc said:
I'm experiencing a similar behavior with 1.93 ROM and 1.00.25.05 radio firm.
I'm currently wondering if S2U2 is the cause.
_Mystique_, do you use S2U2 ?
Click to expand...
Click to collapse
i have partially solved the problem
yes, i use s2u2, but the real problem (for me) is Kaspersky Mobile. Closing it im experiencing 100% plus battery live: i ended a complete charge at 14.48 at now (21.52) i am at 50% battery.
So the problem are the running tasks. This time i closed kaspersky and s2u2, then i will check if i can close some SwiftBL default task
i am in 3g mode (i've switched off hsdpa), bt always off.
kolbac said:
i have a Diamond branded "TIM", and also my battery last about 10 hour without using the phone, always in standby.
I tried switching off the phone module and the battery last about 40h.
So for sure the problem is the aerial/phone component.
I will send the mine to htc in warranty, because i think that 10 hour in stand by is not the normal behaviur of this phone.
also i tried 2 spare "chinese" battery, from ebay, but all the results are the same.... so for sure aren't the battery.
Bye
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Click to collapse
i think that is normal that more battery is spent with phone mode enabled.
i think that a realistic battery life target is a work day.
on ebay there are batteries (10$) and craddles...
Beware of these cheap batteries.
Especially for GPS, that seems to need genuine batteries to work well.
Other topics already deal with this.
Ok i am new here to windows mobile this forum and the x1 as i only have it for about 3 days. But my question is, is it normal that it uses 57% ram when idle? And is the battery supposed to be empty at the end of the day (i leave it charging when i go to sleep)? I got the Hard-spl and Touch-IT v4.5 landscape installed.
The ram is normal for the rom, but the batt life aint.
What is a normal battery life then?
xinos said:
What is a normal battery life then?
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Click to collapse
Depends on what you're doing with your phone.
The battery life can vary between a few hours (full usage of WiFi and/or Bluetooth and MP3) to 10+ days (most time in standby).
I have 4 days with average usage.
http://forum.xda-developers.com/showthread.php?t=495841
I charge it each day.Nomatter it's 90% or 30%.
I never now"will I use my X1 to listen music or go surfing tomorrow?".
Uhm i got 1 day when i am not using the phone and it's just on standby mode all the day and no i don't have wifi on. But i don't know if GPS goes on/off auto but as far as i know it's off.
If make x1 just standby and never used it,maybe a week or more.
But,who can buy a mobile just make it standby
I never mind it,get one more battery maybe a good idea
Hmm i think ill just wait for a week or so and look what happens as i just had it for 3 days.
xinos said:
Hmm i think ill just wait for a week or so and look what happens as i just had it for 3 days.
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Click to collapse
3 days is enough for me...I can not believe my x1 could do it...
I don't know is there the "momax battery" in your area..
My friend told me the battery is better than the original one.
You should search the forum... there are some ways to increase battery life... the biggest issue people have is that they don't fully charge the phone before switching it on. There is a bug in WM which takes the battery charge at the time to be 100%. It will not charge above this figure unless it's turned off.
So turn off the phone and fully charge then restart the phone and it will set the charge level correctly.
Then see what life you get on stand by... I bet it's lots higher.
crabby
No it doesn't, i switched mine on at the phone shop then charged it at home. Worked fine
Wow... that's a nice kick in the nads... could you at least let him try it? I know I had the issue when I first got the phone... did this and it helped me. But of course, if you haven't had this problem dadeadman you must be universally correct.
crabby
I'm gonna give that a go. Since going to itje v4.5 my battery life has been completely naff, doesn't even last a day :-(
djs10 said:
I'm gonna give that a go. Since going to itje v4.5 my battery life has been completely naff, doesn't even last a day :-(
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Click to collapse
same as mine
i feel thre battery life on my x1 is terrible, i full charge it n dischange it on 6: 30am, was using some GPS, heavy EDGE to go online but around 8am to 1pm is using wifi to go on... after all this it drop to 20% battery... so i borrow some1 laptop to charge da fone, n it seems it wont charge n drain battery from my fone, it shows dat im gettin charge but after i unplug it around 5pm i got 5% battery left. my fone shut down on me at 6pm...i got home around 9pm... dat means i got 3 hrs lost in space... no1 can call me, cant go online n lalalala...
i thought my w960 battery was wack... dis is worst...
i dont know why... but the battery of x1 lasts only a day!
and when i think about... i'm pretty much a light user.
i dont use the wifi and 3g at all.
the brightness level of the screen is the lowest.
i play music about 2 hrs with the earphones.
i hardly use any apps except for windows media player.
that also about the 30 mins the most.
i only use the internet about the 30 mins the most.
bluetooths off.
i always close any open app that is there via the htc taskmanager
i using the htc touchflo ui.
i take about 25 pictures at the most and no video recording.
maybe the settings of my phone is somewhat wrong.
maybe i missed something.
so anyone.
please help me...
any advice? any tips?
Then you have a normal battery usage
Wich wm do you use wm6.1 or wm6.5 ? i noticed better battery life in wm6.5 if i don't do anything on the phone the battery lasts for max 2 days but only if i really do nothing on the phone. i have to charge my phone every night.
Sounds pretty normal to me .
"
i play music about 2 hrs with the earphones.
that also about the 30 mins the most.
i only use the internet about the 30 mins the most.
i take about 25 pictures
"
these are the batt killers
if you stop doing those it can last 3 days
but as with all such devices charging them a bit every chance you get
is good for then and give you a longer batt life
it charge using a miniUsb which is everywhere otherwise you can
get one to carry around in a shop for a few $£€
so any computer with usb can be your temp charge station
Okay, I've got some advice for you maybe. I have just flashed my phone from R2A to R3A nad haven't installed too much applications yet, only PocketShield, Resco Explorer and Spb Phone Suite. I notice a strong increase in battery life compared to the old R2A with sooo many apps (Although basically none were running in background, at leats not ones you would think that they consume much power). So I don't know if it's the apps or the ROM but my battery lasts about 75% longer, which is approx. 40 hours total. I have about the same usage you are describing.
commodoor said:
Then you have a normal battery usage
Wich wm do you use wm6.1 or wm6.5 ? i noticed better battery life in wm6.5 if i don't do anything on the phone the battery lasts for max 2 days but only if i really do nothing on the phone. i have to charge my phone every night.
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Click to collapse
i'm using winmo 6.5
and dude.
did you read the reviews.
the phones battery is suppose to at least last 2-3 days.
cause it can/ and should last 5-6days.
Rudegar said:
"
i play music about 2 hrs with the earphones.
that also about the 30 mins the most.
i only use the internet about the 30 mins the most.
i take about 25 pictures
"
these are the batt killers
if you stop doing those it can last 3 days
but as with all such devices charging them a bit every chance you get
is good for then and give you a longer batt life
it charge using a miniUsb which is everywhere otherwise you can
get one to carry around in a shop for a few $£€
so any computer with usb can be your temp charge station
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Click to collapse
yes, i charge my phone using miniUsb cause i'm always with my laptop.
haha.
plus it makes it easier for me to charge.
but the phones battery draining faster and not lasting how the reviews said.
i seriously am going to do some experiment now.
thanks anyway.
Firefall! said:
Okay, I've got some advice for you maybe. I have just flashed my phone from R2A to R3A nad haven't installed too much applications yet, only PocketShield, Resco Explorer and Spb Phone Suite. I notice a strong increase in battery life compared to the old R2A with sooo many apps (Although basically none were running in background, at leats not ones you would think that they consume much power). So I don't know if it's the apps or the ROM but my battery lasts about 75% longer, which is approx. 40 hours total. I have about the same usage you are describing.
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Click to collapse
are you sure?
cause i'm using R3A also and i'm only getting out a day
igoodbyes said:
are you sure?
cause i'm using R3A also and i'm only getting out a day
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I'm just telling you my experiences. Yesterday for example, phone was fully charged @ 7.00 AM. Been listening to music for about 5 hours, called my girlfriend for 1.5 hours, had pushmail activated all the time, sent some text messages, got an email, battery was @ 30% at midnight.
Firefall! said:
I'm just telling you my experiences. Yesterday for example, phone was fully charged @ 7.00 AM. Been listening to music for about 5 hours, called my girlfriend for 1.5 hours, had pushmail activated all the time, sent some text messages, got an email, battery was @ 30% at midnight.
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Click to collapse
If I do those things, my battery will be dead in 4 hours.
igoodbyes said:
yes, i charge my phone using miniUsb cause i'm always with my laptop.
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Click to collapse
Certain laptops have "battery saving features" which regulate/cut off power delivered to usb ports. Try charging with the wall charger.
Plus the wall charger charges faster.
igoodbyes said:
i'm using winmo 6.5
and dude.
did you read the reviews.
the phones battery is suppose to at least last 2-3 days.
cause it can/ and should last 5-6days.
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Click to collapse
sorry but htat battery life is in standby mode. calling uses not that much battery life because the screen is turned off. if you using ur phone extremly thna the battery will drain very fast. with winmo 6.5 teh battery life is 2 days but i dont't take pictures i listin to music about 1 hour and sometimes i'm surfing on the net with it. it checks every 1 hour for emails.
i had so many wm phones and all failed the battery life. they had all short battery life ofcourse i want my phone to last 3 days with the same usage like urs. thats why i have a spare battery with me always.
the battery will drain also faster if you using a lot of apps in the backgound. with a clean rom the battery life is longer than that i install a lot of stuff on it.
So my conclusion is that the battery life will be different for each person. if you think ure battery isn't good than i would say go and buy mugen battery 1800Mah i did it to and i'm happy now.
I did some tests with the original SE battery when i don't do absolutely Nothing with the phone and its in standby the phone battery lasts easy for 4 days
OMG.. 1 day is not enough? OMG!!!
Makes me wonder why we sell Xperia in countries, where they have no access to electricity..
Well, I can recommend buying another phone, or even phone with some solar charger, if you have no access to electricity. Or another battery would do fine.
Myself, I use WIFI a lot in my work, call about 2-4 hours a day and sometimes i'm listening music while walking home. I charge it overnight (yeah I'm lucky guy livin in Europe with access to electricity).
And sometimes it makes me wonder, that people expect the battery to be like nuclear power plant - once you start it, it'll never stop giving you electricity. Cmon, you have 500Mhz CPU, big screen, GSM+3G running at once. Then you can turn on WIFI, GPS and the CPU goes 100%. 1 day is not enough? Jeesh.. Show me a device which lasts more than one day WHILE USING IT (so calls, messages), with normal battery (no nuclear power plant, please! ) and I'm yours
Some people (no offence!!) should return back to Earth
To save some battery, turn OFF 3G if you're not using it. But that'll give you just few hours, which won't save you that much.
2 Hours of GPS use sets me to nearly 50% battery gone!
comeradealexi said:
2 Hours of GPS use sets me to nearly 50% battery gone!
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Yeah, coz you're using GPS, then the screen is ON, the navigation APP (ie TomTom) is using CPU nearly to 100%, then also the GSM-3G is working all the time, RAM and apps in RAM are draining as well.. Normal
nevermind said:
Yeah, coz you're using GPS, then the screen is ON, the navigation APP (ie TomTom) is using CPU nearly to 100%, then also the GSM-3G is working all the time, RAM and apps in RAM are draining as well.. Normal
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it sure can be hungry! lucky i got a spare battery! although i wish i had known you had to have the phone enabled to use the GPS lol what are battery lifes of normal sat navs like? or are they always plugged into the car
nevermind said:
OMG.. 1 day is not enough? OMG!!!
Makes me wonder why we sell Xperia in countries, where they have no access to electricity..
Well, I can recommend buying another phone, or even phone with some solar charger, if you have no access to electricity. Or another battery would do fine.
Myself, I use WIFI a lot in my work, call about 2-4 hours a day and sometimes i'm listening music while walking home. I charge it overnight (yeah I'm lucky guy livin in Europe with access to electricity).
And sometimes it makes me wonder, that people expect the battery to be like nuclear power plant - once you start it, it'll never stop giving you electricity. Cmon, you have 500Mhz CPU, big screen, GSM+3G running at once. Then you can turn on WIFI, GPS and the CPU goes 100%. 1 day is not enough? Jeesh.. Show me a device which lasts more than one day WHILE USING IT (so calls, messages), with normal battery (no nuclear power plant, please! ) and I'm yours
Some people (no offence!!) should return back to Earth
To save some battery, turn OFF 3G if you're not using it. But that'll give you just few hours, which won't save you that much.
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Click to collapse
i'm fully agree with you. i never seen a wm phone where the battery life is longer than 1 day while u using it.
comeradealexi said:
it sure can be hungry! lucky i got a spare battery! although i wish i had known you had to have the phone enabled to use the GPS lol what are battery lifes of normal sat navs like? or are they always plugged into the car
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Hmm.. i'm not quite sure right now how about X1.. But if I am not mistaken, few months ago I tried GPS with phone OFF and it worked EXCEPT TomTom. It found sats, but TomTom refused to accept it. But geocaching app worked.. Will try tomorrow or the day after tomorrow.
Not sure about sat navs, don't have one. My parents do, but they always plug it into the car as far as I remember. But I don't think any sat nav will last several hours with battery, when there is CPU clocked crazy high, bright screen and also the GPS chip itself (not mentioning that the heat will decrease the battery life).
orelsi said:
If I do those things, my battery will be dead in 4 hours.
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I feel sorry for you, really
orelsi said:
If I do those things, my battery will be dead in 4 hours.
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Click to collapse
i know what you mean...
but i think mine will last about 9hrs.
which i still find... very less!
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!
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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
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Click to collapse
yep i agree, the original HTC batteries seem to be worst than the cheap aftermarket versions