Develop Bugs

Desire battery life

Any pointers for increasing battery life? I've disabled live wallpapers, picked a dark background, set friendfeed etc to update every 4 hours, and it's still not great. Phone is new, should I expect battery life to improve as battery gets used a bit?
Are task killers worth using? Seems to be some debate that they might actually cause more problems than they solve.
I've gone through forum and found lots of generic advice but would appreciate any ideas people have tried on the Desire.
Do I *really* need to wturn off wifi when I'm not using it? Isn't the phone smart enough to not use it when a known-network isn't present?
Cheers

From my experience i would advise against having a task killer running.
I used to have one running on my N1 and thought, "Great, i can free up memory". But you really don't need to do that with Android.
Having disabled it from running, I get to teh end of the day and I have between 75 and 85 battery, after having done a fair few phone calls, some net fun and data access.
I still have a task killer but I use it infrequently and dont have it running - i let it "kill" itself after running it.
I found they take up a good deal of battery life. But that's just my opinion.

isaw said:
From my experience i would advise against having a task killer running.
Click to expand...
Click to collapse
Of course!
The classic task killers kill services that are sleeping and do no eat battery.
A few minuts later, on some receivers ( connexion to internet, message or SMS received) these services will restart, and that's where they are eating battery.
If you hadn't killed them, they would have done that without eating battery.
Waking up and then going to sleep is really less battery-eater than restarting the whole service.
So, please forget about all these task killers or do that in a smart way. Only kill your game or the latest app you used!

Battery life will improve over the first weeks use. Needs a few charge cycles to achieve full capacity.
Although the battery life might not be as good as some other "imore ipopular" handsets at least you can buy a second reasonably cheap battery if you know you will be a couple of days away from a possible charge (camping etc).

zzleezz said:
Battery life will improve over the first weeks use. Needs a few charge cycles to achieve full capacity.
Although the battery life might not be as good as some other "imore ipopular" handsets at least you can buy a second reasonably cheap battery if you know you will be a couple of days away from a possible charge (camping etc).
Click to expand...
Click to collapse
You serious? I am guessing you're referring to the iPhone, the smartphone that is on charge more times than its off charge?
My Desire hands down beats an iPhone for battery life by almost 100% - only ever got 1 day of an iPhone at best - Desire is approaching nearly 2 days full usage, I am no lite user either.
For battery life the Desire is one, if not the best out there at the moment.

thank christ for that, i presume it improves after a couple of charges. mine was new on friday and the battery's pretty uninspiring so far...

landwomble said:
thank christ for that, i presume it improves after a couple of charges. mine was new on friday and the battery's pretty uninspiring so far...
Click to expand...
Click to collapse
My Desire has been up for 21.5 hours and has 3 bars left (according to the settings battery meter) but I've been driving around most of the day with spotify on listening to music, quite a bit of surfing, emailing, calls and a few texts.
I reckon it's probably got another 5+ hours to go yet.
My phone is quite new and battery life is starting to improve daily now.

Hmm... struggle to get more than 5 or 6 hours out if mine under relatively light usage, maybe 20 mins calls and 3 or 4 texts, if I use browser it flatten quicker still, the battery use status usually says Android OS itself has used most battery.
Hoping it will improve, at moment it is poor compared to my TD2 with a smaller battery
P.

had mine about 6 days and my battery is ver poor at the moment. however i remember thinking that about the G1 at first and it got better.
still was luck to get a full day from it. however i went to europe the other week (from uk) so turned all roaming data and syncing off and it lasted 4 days.
fingures crossed battery life increases on the desire, gor a car charger on orded fron fleabay so i should survive
i loved my G1, and found it hard to upgrade, first time thats ever happend, but wow this desire is differnt class, my wife has the iphone and is green and my 16 year old son is gutted he got the hero only 6 months ago.

Re: desire battery life
I've been running my desire for nearly two weeks now.
As usual WiFi & gps are the main culprits.
On average, I have exchange & GMAIL push on 3G all day with a bit of Facebook, sms & several min long calls without going past the three quarter mark by 5:30pm . However as soon as I switch on WiFi at home for browsing, reading news feeds, market etc, bang goes my battery!
Turn off 3G and sync and use it as a phone.......great battery life!
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk

Yea not sure how you guys get good battery out of it. I have everything off, dark background, no synching due to having mobile network off (only thing setup to sync is email every 2 hours). I take a few phone calls maybe 30-40mins, do about 15 mins of surfing, 30 mins of music through headphones at low volume, and a game for 30 mins. That pretty much concludes my battery life for the day (is usually at around 20% left by the time I get home).
I find if I browse the market and download/install apps, my battery will go down very quickly.

Got my desire for a week now and it lasts me 2 days woth some movies, wifi and messaging. if i go even lighter, only messaging and calls it lasted me almost 4 days. it has great battery in my opinion, better than my old hd2 and even better then my old old diamond

Over in General we found an issue with the calendar app keeping the phone from going into sleep mode - That could be a cause for poor battery life.
The thread is here (remove spaces please):
h ttp:// f orum. xda-developers.com/showthread.php?t=666404

My Desire have no problem on battery so far tho, 1½ day with normal use is no problem. litle use i can use it around 2 days, but with alot off things running i would say for sure it works over a full working day.

Mine has been running for 20 hours now, I have mainly been calling, texting, surfing the net (mainly facebook), and playing a game a couple of times.
I'm not really sure whether this is good or not, I would rather it lasted longer than this, as it is due for a charge within the next few hours, and this is a bit of an awkward time to need to charge it. If I wasn't off work today I'd have a dead phone before I got home.
I don't like to charge mine before it tells me too, I like to think it'll improve the battery life over time? Is this right?

those batteries are not affected by memory effect. charging everytime you can is better than drain battery to 0%

HTC have said there is a software issue with battery levels hench the charging issues. Fix in the future they suggested.
Weather this effects the actual life of battery not sure.

I have just come from the HD2
At the beginning, everyone agreed that the battery life was god awful, and a month or so in everyone reported that the battery life was outstanding!
I can confirm this, to start with it wouldnt last me a day, by the end of it i could leave 3g and wifi on all day with everything running in the background and get a good 2 full days out of it!
I just received the desire yesterday, i gave it a full overnight charge and i must report that for the first charge the battery life looks very promising
I have used the phone VERY heavily even for me with about 100 texts, an hour talking, an hour on the internet and syncing every 15 mins or so and i have 2 bars of battery left, and i said, the battery is only going to get better!
You should look at power management tips for the HD2 as most of them apply, for example disabling 'automatic backlght' and setting it yourself because that alone can add about 30% to your battery life.

currently at 2 days 15 hours with 6/10 battery bars left.
i have gps/wifi/internet disabled and turn them on with the settings widgets when i want to use them. screen brightness at about 20%
the battery is great IMO

Guys could u please tell if I should when receiving my phone charge it directly (full charge) or it's better to empty it completely and then charge it ?
Thanx

[Q] HTC Desire vs. Desire HD Battery Life.

A very simple quick question : Is the battery life of the Desire HD better or worse than the original Desire? (because right now the only thing that is between getting the DHD or the Desire is the battery life issue) I am much satisfied how the old Desire performs in batterywise (by reading the forums and reviews) but all the bad comments of the DHD dreads me to make the deal.
Have anyone used (or better owned) both devices and know any differences of these 2 devices with same level of usage? Can actually the improvement of the CPU compensate the drain due to the screen?
Some facts I expect from the device:
1. Dont need hourly updating with twitter fb etc or regular sense Sync. (once or twice a day is more than enough)
2. Looking forward to have a fairly moderate use of the screen for browsing ebooks etc.
3. Not heavy on making long calls.
4. Dont want to use spare batteries and nowhere to charge during the day after leaving home. So it MUST last 24hrs.
PLEASE share your experience, or I m afraid I might endup with the wrong phone for the next 2 years! Thank you all for your valuable comments....

XartzMAX said:
A very simple quick question : Is the battery life of the Desire HD better or worse than the original Desire? (because right now the only thing that is between getting the DHD or the Desire is the battery life issue) I am much satisfied how the old Desire performs in batterywise (by reading the forums and reviews) but all the bad comments of the DHD dreads me to make the deal.
Have anyone used (or better owned) both devices and know any differences of these 2 devices with same level of usage? Can actually the improvement of the CPU compensate the drain due to the screen?
Some facts I expect from the device:
1. Dont need hourly updating with twitter fb etc or regular sense Sync. (once or twice a day is more than enough)
2. Looking forward to have a fairly moderate use of the screen for browsing ebooks etc.
3. Not heavy on making long calls.
4. Dont want to use spare batteries and nowhere to charge during the day after leaving home. So it MUST last 24hrs.
PLEASE share your experience, or I m afraid I might endup with the wrong phone for the next 2 years! Thank you all for your valuable comments....
Click to expand...
Click to collapse
Roughly the same battery life for me.
Cheers from my DHD.

junta_mpb said:
Roughly the same battery life for me.
Cheers from my DHD.
Click to expand...
Click to collapse
@junta_mpb Thanks for the instant reply. So I ll take that DHD can last the day by my usage pattern right?
Ok now Much more convinced to make the deal with DHD .
So I presume the battery killer about the DHD is the screen. And for a day that I might need more juice till late, I spare the screen usage and be ok right? I also saw that the 2G can go upto 9+hrs! So it seems calling may not have a big impact.
Just curious how much do you think it will last, if I got a DHD, with my usage pattern, with additional 30mins gaming a day? Thanks a lot for the replies.

XartzMAX said:
@junta_mpb Thanks for the instant reply. So I ll take that DHD can last the day by my usage pattern right?
Ok now Much more convinced to make the deal with DHD .
So I presume the battery killer about the DHD is the screen. And for a day that I might need more juice till late, I spare the screen usage and be ok right? I also saw that the 2G can go upto 9+hrs! So it seems calling may not have a big impact.
Just curious how much do you think it will last, if I got a DHD, with my usage pattern, with additional 30mins gaming a day? Thanks a lot for the replies.
Click to expand...
Click to collapse
Text and calls don't seem to affect usage a lot. Based on what you wrote, I would say reading your books will eat the most out of your battery. I'm going out on a limb here and will say you should easily get more than 14 hours with heavy usage/e book reading. By heavy I mean more than 3 hours screen time.
3g is the biggest drain of the battery, in my experience and even with it on, I still get more than 14 hours with lots of surfing with around 3 hours screen time.
Standby drain with hourly sync takes 1% per hour.
Cheers from my DHD.

My battery is better than normal desire. I can actually playing most of the day with it and still have some juice left till I plug it in....
Sent from my HTC Desire HD using XDA App

@junta_mpb an @MattSkeet Many thanks again. Getting a solid picture now
Just another quick question, do you keep the syncing, email and social network updates, to frequent checking (for ex 1 hr basis) and use GPS daily?
And how much "screen time" roughly do you get until the battery level gets critical?

junta_mpb said:
Text and calls don't seem to affect usage a lot. Based on what you wrote, I would say reading your books will eat the most out of your battery. I'm going out on a limb here and will say you should easily get more than 14 hours with heavy usage/e book reading. By heavy I mean more than 3 hours screen time.
3g is the biggest drain of the battery, in my experience and even with it on, I still get more than 14 hours with lots of surfing with around 3 hours screen time.
Standby drain with hourly sync takes 1% per hour.
Cheers from my DHD.
Click to expand...
Click to collapse
I forgot to mention, all the time quotes are when the phone reaches 30%. You can actually get more out of it if you push it further.
Cheers from my DHD.

XartzMAX said:
@junta_mpb an @MattSkeet Many thanks again. Getting a solid picture now
Just another quick question, do you keep the syncing, email and social network updates, to frequent checking (for ex 1 hr basis) and use GPS daily?
And how much "screen time" roughly do you get until the battery level gets critical?
Click to expand...
Click to collapse
Mine is set to hourly sync. Screen time is typically around 3+ hours.
Again, this usage gets me to 30%. I usually change then.
Cheers from my DHD.

I am fortunate enough to have both devices. I see myself as an average user and I easily get through a day with my dhd, 24hrs plus.
The battery life on my desire is abit better but not by much as I always plug it in every night in anycase.
I have Facebook, emails sync every hour, WiFi on the whole time, 30 to 40 mins of gaming, and listening to some music when I'm bored, 10 to 15 min on the web, atleast 4 calls made or received and texting the whole time. This is average usage for me, so I think you should be fine.
Sent from my Desire HD using XDA App

PC Pro put the DHD at the bottom in its battery tests, lower than the Desire. But in the alternate universe inhabited by some people in this forum, I'm sure the Desire is better.
Sent from my Desire HD using XDA App

bobbyelliott said:
PC Pro put the DHD at the bottom in its battery tests, lower than the Desire. But in the alternate universe inhabited by some people in this forum, I'm sure the Desire is better.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
@bobbyelliott maybe functions that didnt much affect the battery of the Desire (screen usage I presume) due to AMOLED, have greater effect on the DHD, and vice versa?
But getting mixed reviews is confusing. Shame that I dont know anyone with a DHD to check hands-on. And the battery needs some time to adjust, as I ve seen in this forum posts, and they had done the battery test straight out of the box I think?
Anyway I m still leaning towards the DHD for its big screen. But I dont see a point buying such a powerhouse with so much underpowered battery.
Maybe should I wait and see if something like Thunderbolt gets available for sim-free?

had Desire for 6 months and am a DHD user for less than 3 weeks now..
battery life is very similar, maybe slightly better on Desire..
am a light user; 5-10 sms per day, a call or two, sync only gmail & weather (every 2 hrs).. some web surfing (30 minutes) and installing/uninstalling of apps..
with above usage i charge battery every 2 days

I can't compare with the Desire (I'm comming from a Touch HD - the greatest phone of it's time ), but I can easyly get through the day with one charge. Obviously the screen is the biggest drain, so if you need the battery to last more, you have to limit your "screen time" and I keep my brightness set to auto. Due to the nature of my job, I make a lot of calls (maybe 40-50 mins a day), browsing+XDA ~40 mins a day, ebooks for about 30 mins (screen brightnes set to minimum for that), and when I have to use GPS (very rarely), I always charge the phone during that time, because I use GPS only while driving. Also I'm almost always on 3G, wifi and bluetooth always on. I don't use facebook or twitter, but I sync the news feeds, weather, POP3 mail, gmail is set to push, sense is also syncing... and I think that's about everything worth mentioning.
I rarely play games though, so this might bring the battery down if you do, but I think you can still get through the day (actually that's 16 not 24 hours - you have to sleep sometime ). Also if you have a "battery heavy" day, you can always put some juice in the phone while driving home after work.

XartzMAX said:
@junta_mpb an @MattSkeet Many thanks again. Getting a solid picture now
Just another quick question, do you keep the syncing, email and social network updates, to frequent checking (for ex 1 hr basis) and use GPS daily?
And how much "screen time" roughly do you get until the battery level gets critical?
Click to expand...
Click to collapse
Here is roughly my day.
Wake up at 6am phone off the charger walk to work and play on it for about 15min.
During work I play (same games some internet some engadget ) here and there for about 10min plus 30+ on my break so all together will be more than 1,5hrs finish work at 4pm and my battery is at about 60-70% get back home surf the net for half hour and turn on hotspot (don't have proper internet at home) this itself drains a lot of battery but if I don't use hotspot and play with the phone instead I manage to get till about 5 5,30 till phone battery goes down to 20% and this is very heavy usage. Had days (Fridays ;p) where after work I didn't use the phone much just few text and it lasted me till next day with about 15% left.
Things is I don't call much. I have 900min and this month used only 100 (lol)
My updates are every 3hrs, push for gmail (i have one account for my regular emails and one just to store contacts without any crappy email addresses) gmail used as exchange account.
Screen on 23% brightness.
Lately battery is draining fast because I've installed whatsapp as my miss is abroad so we save some pennies
Sent from my HTC Desire HD using XDA App

[SOLVED] Final Decision : Going with the Original Desire!
I was doing some more research, and Decided to buy the 'Old' Desire
And Thank you all for your contribution with experiences and thoughts, guys trust me it did help eventhough I didnt go for the DHD !
So for everyone I m gonna breakdown the reasons for my decision. (at least on the paper Desire outscored the DHD)
Battery Life
A huge factor if not the critical. I found that Desire has better Battery life than DHD, in comments I found Desire "Only lasts a day\ have to recharge everyday" etc and with DHD I found "Battery life is abysmal dont last the day\ have to plug in for midday charge" etc, but I know some of you guys anyway manage to keep the juice to last the day, anyway Desire 1 point...
Quadrant Score
http://smartphonebenchmarks.com/ (with 1GHz ranking) WOW this is INCREDIBLE ! Desire outsmarted the DHD came up with 3rd in benchmark with 1. Samsung Epic 4G 2. Samsung Galaxy S 3. LG Optimus 2X (dual core anyway) so its actually second place considering both first two are identical. (now who says Desire is not for gaming???)
Techradar No. 1 phone of all times
with DHD on the 3rd place http://www.techradar.com/news/phone...e-phones-in-the-world-today-645440?artc_pg=21
Pixel Density
Not a big point but anyway a point for desire.
Looks
DHD looks minimalistic on the face and Desire looks good too. And the physical Buttons on Desire... (are they better than the capacitive counterparts?)
Design
I dont like the patchy design of the DHD to be honest. Looks less durable and what about the gap between the bottom door? Cant put a custom cover to get bigger battery even. And the kickstand is utterly useless for many if used with a casing which is mostly the case. And the camera protruding out is menacing and accident prone.
Size and Weight
164g Vs 135g big deal. Pocketability issues, bulge, and for the long hours at the University it's gonna cost me some uncomfortable time.
Camera
Desire's cam is not the best, washed off colors etc.. but is the cam on the DHD fantastic? Nope, focus errors, too much sharpening etc. But HD footage is really cool. Not a big improvement worth considering I think.
DHD issues
Reception issues, (death grip?) , Sometimes lagging (occational 100% CPU usage, saw in a thread in XDA) Desire's problems were ironed out mostly I guess with the hardware revisions. No more overheat etc....
Loudness
Desire is louder than DHD http://www.gsmarena.com/htc_desire-review-468p8.php and http://www.gsmarena.com/htc_desire_... my Desire. Any more comments are welcome. :D

Just one more thing to add, I think the DHD is an overkill. They've got the same snappy so the apps should run at the same speed. And android doesnt have too many 3D games (yet) and I think Desire will do fine until at least the end of this year. Then the dual core phone will go mainstream and prices will fall. So even with the Adreno 205 I dont think DHD is leaps and bounds ahead of the Desire in technology aspect. (buy anyway we can port the DHD rom to desire !!)
Cheers.

XartzMAX said:
Just one more thing to add, I think the DHD is an overkill. They've got the same snappy so the apps should run at the same speed. And android doesnt have too many 3D games (yet) and I think Desire will do fine until at least the end of this year. Then the dual core phone will go mainstream and prices will fall. So even with the Adreno 205 I dont think DHD is leaps and bounds ahead of the Desire in technology aspect. (buy anyway we can port the DHD rom to desire !!)
Cheers.
Click to expand...
Click to collapse
It's not the same snappy. Desire hd has the second generation version which uses less power and overclocks better.
-----
Someone Swyped my idea.

Near 2 months of using DHD. Battery life is improving.
Sent from my Desire HD using XDA App

This review shows the DHD battery lasts longer:
http://www.fastbutter.com/Article/227/HTC-In-Depth-Review--HTC-Desire-HD
"Despite Desire HD has a battery of 1230 mAh it sweep the carpet with its older sibling Desire with its 1400 mAh battery. When Desire goes out after almost exactly five hours Desire HD still have 19% battery left and rolls on for one hour and two minutes more- despite the smaller battery."
I guess the people with battery problems are having the cpu draining /init bug.

Battery Life

Hi
Had my phone a little over 24 hours and I may have a very poor battery
I have a LIVE screen on the one with the water and the leaves plus, I haven't made or received any calls but I have used it a little for internet and a few text messages
The green bar was on full about 5 hours ago and if I had to guess how long my use has been I would say 30 mins in total of the 5 hours, now my battery is indicating less than half full
Imagine if I was out all day making and receiving calls?
Does this sound normal?

This is normal for the first week or two , the battery is adjusting itself to your needs
Sent from my HTC Desire using XDA App

It's absolutely normal and you'll really notice a difference in about ten days, a couple of weeks the most.
That said, live wallpapers do use more battery. I much prefer a static dark one

adding to that make sure your phones nicely drained before recharging to ensure you get a nice full charge for next time... i took my desire's battery at least 5 days to start having a long term charge

bettery
same here took a week also what really helped me is having advanced task killer and setting it to kill unwanted apps after i lock the screen

i dont think you should use task killer, the apps will end them selves, i used task killer and got alot of force close after and errors etc
however force stopping unwanted applications is also good.

Android system 30%
cell standby 25%
phone idle 17%
android OS 15%
Display 11%
Internet 2%
5 H 55M 55S unplugged, hahaha no joke its all 5's
and now my battery is almost dead surely this cant be right
has anyone ever been given a replacement battery for their phone or do they ask for the phone to be returned if this is infact a fault

Battery sucks, phone is power hungry. Get used to it
I've had 2 desires since a week after it was released, i can count on one hand how many times I've got through a day without plugging my phone in.

I get about 2 days on my phone if I don't mess around with it a lot or get many calls. I normally plug it on overnight. Every night.
Nowadays that seems normal for a smartphone. Personally I think the battery life is slightly better than the iPhone 3GS.
Angry Birds means it lasts about 4-5 hours...
Sent from my HTC Desire using XDA App

It's all down to how your using your phone. If you have a live wallpaper and many widgets and apps that run in the background like running in the notification bar, then yes, your phone will die pretty fast. Also it depends on how much CPU your burning. When I first got my Desire, I was like WTF. This is useless battery life and was starting to play hell. Now it's fine. I can leave it for 2 days easily if I just text or flick through settings. It just depends on what your running.
BTW, no one should have a task killer. It defeats the purpose of Android. You can get a lot of force closes and other things. Just leave them alone and let the OS handle the apps. Android does end the process if it's idle, eventually, but it's not using anything really other than a bit of memory just to keep it going a little.

As GoogleJelly pointed out, it really does depend on what you do with your phone and what's apps/processes are running on it while the device is using battery. Even I found the battery life pretty poor at the beginning...I found it quite annoying having to charge this thing nearly every day.
After some light tweaking, I managed to get the battery life to go over 3 days and I now have no reason to complain about my phone Mind you, I'm not a heavy user....As for background apps, I think i've got about 5/6 apps running at a time...
EDIT: I've attached a screenshot of my battery meter.....

What app are you using to view your battey history?

I also tested task killer when I got my phone. I thought it was fixing battery life, but after bedding the phone in a bit I took it off to see how much difference it would make and I didnt notice any difference at all...
Sent from my HTC Desire using XDA App

GoogleJelly said:
What app are you using to view your battey history?
Click to expand...
Click to collapse
I configured Quick Battery app to go to battery history from my phone settings every time I tap on it. You can view your battery history through:
Settings > About phone > Battery use.
If you want the graph, just tap on the top layer which shows the length of time you've been on battery.
EDIT: This works for Gingerbread based ROMs (it's the standard feature lol)...can't remember this being on Froyo.

infinityharry said:
adding to that make sure your phones nicely drained before recharging to ensure you get a nice full charge for next time... i took my desire's battery at least 5 days to start having a long term charge
Click to expand...
Click to collapse
This is irrelevant with Li-ion as this is a myth from the ages of NiMh batteries. Your battery will not get ruined if you don't discharge it completely before first charging.
Sent from my HTC Desire using Tapatalk

efcgenius said:
Android system 30%
cell standby 25%
phone idle 17%
android OS 15%
Display 11%
Internet 2%
Click to expand...
Click to collapse
great guideline, thx

Evil_Cid said:
I configured Quick Battery app to go to battery history from my phone settings every time I tap on it. You can view your battery history through:
Settings > About phone > Battery use.
If you want the graph, just tap on the top layer which shows the length of time you've been on battery.
EDIT: This works for GIngerbread based ROMs (it's the standard feature lol)...can't remember this being on Froyo.
Click to expand...
Click to collapse
Ah right, cheers for that. Didn't know it was all built in

One of the main reasons why new smartphone owners experience fast battery drain lies in the simple fact that they fill up seven homescreens with widgets that sync over mobile internet every hour or even more often, which really kills the poor juice like a massive gas leak.
After about half a year of use I've reached a stage where I use just 2 screens on my Desire (CM 6.1.1), of which page no2 is a full 4x5 agenda and Page one has just one actively updated widget (home weather).
Combined with restricting network usage of random apps by means of DroidWall and underclocking the processor at certain parameters (eg. battery <50%) the phone lives for 2 days pretty easily, with moderate browsing, music etc included.
But TBH I've really decided that the battery usage is absolutely random because some days it just drains like there's no tomorrow with no apparent reason that I've been able to identify. Carry a spare microUSB wire tbh :/

I read so much myths in this thread concerning Li-Ion batteries.
First of all Li-Ion batteries do have instantly the capacity they are intended for. Even 5 charges won't change that. The only thing which can change over time and charge-cycles is your phone recognizing a new voltage level as "full" (read more: "calibrating htc desire battery") or you playing less with the phone or having power-consuming apps uninstalled.
Also a full first charge is not necessary. This "requirement" are from past days with NiCd or NiMH battery-types.
Read more: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

System of a pWne!^ said:
I read so much myths in this thread concerning Li-Ion batteries.
First of all Li-Ion batteries do have instantly the capacity they are intended for. Even 5 charges won't change that. The only thing which can change over time and charge-cycles is your phone recognizing a new voltage level as "full" (read more: "calibrating htc desire battery") or you playing less with the phone or having power-consuming apps uninstalled.
Also a full first charge is not necessary. This "requirement" are from past days with NiCd or NiMH battery-types.
Read more: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
The calibration during the initial week or so of using the phone arises from phone-side calibration, not the battery itself, which is why deleting battery stats from recovery can at times resolve battery issues :V
Phone didn't last half a day after flashing CM 6.1.1; after a couple of days I charged it to 100%, deleted the stats and voila, it's about as perfect as a terrible smartphone battery can get.

[CM7] Battery drain fix

I found this thread on Desize HD forum:
http://forum.xda-developers.com/showthread.php?t=984337&page=6
then i wonder can we get some information to know where the problem come from?=> we can fix the battery drain issue on all GB build. Hope it help out devs. cheer
Sorry for my bad english

What drain?
Are there really so many problems with drainage on CM7/GB builds?
2d, 3h, 25m on battery with 60% left.
The first CM7 build i used is the one in my sig. I'm amazed by the lack of problems with this build

The only drain that's still ongoing is bluetooth on standby drain AFAIK. This DSP issue is not related to the HD2, thus I don't think it's valid to implement. With bluetooth turned off and heavy usage, I get roughly 2 days out of my device also... I really don't think the drain is a big issue. Honestly, the biggest issues is (And it's not much): Robot voice once in a while, some Wifi issues (EAP mostly), Wakeup lag and BT drain on standby.

the drain is related to the toolchain used to compile our kernals and roms?). I however can do easily 3 days with out charging on android, using the same setup as KrewsialNL

Actually
Actually, i get pretty horrible battery life across all builds...
it could be that I have a v1 TMOUS hd2 though... something is weird with it. I always get random energy spikes (even with sync off)
can't get more than 14-18 hours...

My battery drainage is fine using the Typhoon rom. I think some people are expecting a little too much out of their batteries.

It's only 1230mah if it was 1500mah it would have been way better.

KrewsialNL said:
Are there really so many problems with drainage on CM7/GB builds?
2d, 3h, 25m on battery with 60% left.
The first CM7 build i used is the one in my sig. I'm amazed by the lack of problems with this build
Click to expand...
Click to collapse
How on EARTH are you getting that long out of your battery?
Are you using the phone at all?
I've used loads of different builds and never come even close to half that battery life, in fact no more than about 20hours MAX with light usage.
I am using Juice Defender to disable my WiFi and Data when the phone is not in use too.
Any tips?

I have run all the latest GB builds and I also get this weird spike (around 70mA to 100mA) usually when I leave the phone overnight (not charging) and this drains my battery down to almost empty by morning. This is with bluetooth off and wifi on. No apps installed on the phone.

KrewsialNL said:
Are there really so many problems with drainage on CM7/GB builds?
2d, 3h, 25m on battery with 60% left.
The first CM7 build i used is the one in my sig. I'm amazed by the lack of problems with this build
Click to expand...
Click to collapse
mmmm That CM7 build has great battery life but yours is beyond reality... are you sure you haven't connect the phone in those 2 days?
Mine says "4D 10h 1m 50s on battery" and has more than 50% left but it has 3 green spikes (in battery use, I connected 3 times but didnt charge to 100%)

Crin said:
How on EARTH are you getting that long out of your battery?
Are you using the phone at all?
I've used loads of different builds and never come even close to half that battery life, in fact no more than about 20hours MAX with light usage.
I am using Juice Defender to disable my WiFi and Data when the phone is not in use too.
Any tips?
Click to expand...
Click to collapse
Well I was going to say exactly EXACTLY the same thing! Except that i didn't like Juice Defender
Is battery THAT GOOD?!?

Battery
well yes, it's certainly feasible...
it's just that MY hd2 specifically gets random spikes in energy usage.... I'm not sure why, been trying to resolve it for a while.
I don't really get those spikes in WM, only when I go someplace that doesn't have signal... it will spike up initially and then settle down (dutty's rom)
However, with these android roms.... i get random spikes of increased current around 100-200ma while the phone is in sleep. Bluetooth off, sync off, wifi off etc.
also, when the phone is in use... it is not uncommon to have current of 400+ consumption... hitting 500+ when web browsing...
I never got this high in windows mobile...generally around 400 when streaming youtube in wm. I'm wondering if it is an android thing...
edit:
in a perfect world, our battery consumption should stay around 4ma constantly... Which we know that isn't always the case because we have data syncing and signal strength changing...but to give you an idea....
if we have a 1230mah battery... dividing that by the current draw (4ma) gives us a standby time of ~307.5h....
that's ~12.8 days
however, with my current usage... say, i'm getting about 14 hours out of my battery... that's like if i constantly had a current draw of ~68ma...
Taking a look of my usage charts.... if we say the phone is only in use for 6 hours, and the rest is in standby for 10h at 4ma...
the 6 hours would have a power consumption of ~300ma the whole time....
which i think is kinda excessive....
meh. i don't know.
perhaps i'll upload my usage charts later... lately on this new rom, i've been getting only 8 hours of battery :/
but it could be because i've been playing around with it too much

I am on a TMO US HD2 first generation and I am doing good if I can get 6 hrs of battery with the stock battery and normal usage. No wifi, 3/4g, no GPS, and auto screen dim. If I am using the net or something like angry birds I am down to 2-3 hrs max. I have tried underclocking and still not getting a full 8 hrs of life. Would love to find a solid rom that lasts 12 hrs or more. Ordered an extended battery so maybe that will help a bit.

tageeboy said:
I am on a TMO US HD2 first generation and I am doing good if I can get 6 hrs of battery with the stock battery and normal usage. No wifi, 3/4g, no GPS, and auto screen dim. If I am using the net or something like angry birds I am down to 2-3 hrs max. I have tried underclocking and still not getting a full 8 hrs of life. Would love to find a solid rom that lasts 12 hrs or more. Ordered an extended battery so maybe that will help a bit.
Click to expand...
Click to collapse
I have the same TMO US 1st Gen. I'm using
TyphooN CyanogenMod 7
http://forum.xda-developers.com/showthread.php?t=933951 just uncheck bluethoot when you don't use it.
I get from 1 to 2 days with moderate use.

Define what's good and what bad with the standard battery? I have been getting on average about 10-15 hours and that's with doing alot of texting, web surfing, mp3 player and xda lol, and crunchyroll (streaming shows) usually over 3g but sometimes over 4g.
Sent from my PC36100 using XDA Premium App

robrob777 said:
I have the same TMO US 1st Gen. I'm using
TyphooN CyanogenMod 7
http://forum.xda-developers.com/showthread.php?t=933951 just uncheck bluethoot when you don't use it.
I get from 1 to 2 days with moderate use.
Click to expand...
Click to collapse
Thanks for the tip. I have a second HD2 that I test builds on and I was actually in the process of installing the ROM you mentioned last night I am excited that this may be the rom to drop on my daily driver I have noticed that non GB roms (2.2) seem to have much stronger WIFI signal strength so I am hopeful this GB version will have solid WIFI signal too. Love using GB but hate the wifi issues I keep having. Thanks agian for the tip.

Well, this thread didn't go anywhere.
I'm finally trying to get up the courage to switch to a NAND rom.
I get awful battery life out of my SD build I've been playing with and that is with a 1500mAh replacement battery.
I'd hate to switch only to find myself in the same position?
Looking at TyphooN CyanogenMod 7 Nightly v3.6.0 . . .

Revhead said:
Well, this thread didn't go anywhere.
I'm finally trying to get up the courage to switch to a NAND rom.
I get awful battery life out of my SD build I've been playing with and that is with a 1500mAh replacement battery.
I'd hate to switch only to find myself in the same position?
Looking at TyphooN CyanogenMod 7 Nightly v3.6.0 . . .
Click to expand...
Click to collapse
battery drain on SD builds may vary from SD card used.
I can confirm that from my experience, i was not able to use the phone on the second day (total up time 1d + 12h TOP) when i was on SD builds
BUT.. while on NAND (no A2SD no Data2SD)
I can confirm that i can now use the phone for 2d + some hours, depending on use.
All battery info apps told me that battery life is Good (not excellent, not very good).

Made the switch. Battery life as good if not better than with WM and SD build. I feel the biggest improvement came when I installed setCPU.
Sent from my HTC HD2 using XDA App

My - Battery Sucks -

I have to charge it twice a day, and my use is for only couple of hours talking and few browsing.
I tried that with stock as well as
[ROM] cwm-Phantom-X-
is anyone else also experiencing the same?

a few hours being like 10 hours straight talking?

You're crazy. This battery is the best I've seen in a long time.
____________________
Deebo took your bike too?

im getting 12 hours with normal use and 8-9hours with very very heavy use(basically on my phone all day non stop)

I can drain a battery in 6 hours or less. I can't make it through a 8 hour work day without charging it. I guess you guys that go 12+ hours on a charge aren't power users. I tried every rom and kernel and my results are exactly the same.

Maybe the people who are complaining about battery life came from a flip phone or a blackberry. As far as smartphones go, this is the best you'll find for the features and enormous screen we have. Don't believe me then get an Amaze, Sensation, myTouch 4g Slide or G2x.
Sent from my SGH-T989 using xda premium

jessejames111981 said:
I can drain a battery in 6 hours or less. I can't make it through a 8 hour work day without charging it. I guess you guys that go 12+ hours on a charge aren't power users. I tried every rom and kernel and my results are exactly the same.
Click to expand...
Click to collapse
this is exactly what I am talking about.
Before I had HTC G2 and same amount of use it last for whole day (around 12+ hours) but this one hardly goes upto 7-8 hours with one charge...
I did the battery wipe with full charge, if that makes any difference.

jessejames111981 said:
I can drain a battery in 6 hours or less. I can't make it through a 8 hour work day without charging it. I guess you guys that go 12+ hours on a charge aren't power users. I tried every rom and kernel and my results are exactly the same.
Click to expand...
Click to collapse
I drain mine in 6. But i'm on it constantly. That's damn good for a phone like this.
____________________
Deebo took your bike too?

Getting 24 hrs+ with a custom rom, juggernaut....
Sent from my SGH-T989 using xda premium

I dont know bout anyone else... but the only battery problems ive experienced is the fact that ive become so damn lazy on keeping the phone charged.
The battery lasts so long that i forget to charge it, and then i run out of battery

I'm a heavy user literally all I do is watch 1080p movies and plays games on my phone. I get twelve to fourteen hours every day. I also get at least a text every fifteen minutes if not more. Maybe the developers didn't remove career ciq which bogs down performance and drain the battery. You can also try a different kernel.
Sent from my SGH-T989 using xda premium

don't forget that in areas where you have crappy signal, you phone pumps up the power to try and compensate. you may notice your phone heating up in your pocket too. If you have no signal at all, i weep for your battery life.
go into airplane mode to save juice.

I too get 24 hours or more from light to moderate use with juggernaut.
Heavy use still nets me at least 10 hours. Although I toggle things off if I remember and don't need them. Like wifi, data, auto bright, sync, etc. although WAY lead important with this phone than it was with vibrant running cm7.
Sent from my SGH-T989 using XDA App

I had some weird battery drain with the stock rom. I couldnt get more than 5 hrs with light usage or heavy usage. I flashed streamlined (a mostly stock rom) from teshxx and im back to having 9-10hrs of battery life with moderate to heavy usage (3hrs of on screen time)
Sent from my T-Mobile Galaxy S II 4G

I have a 12-14 hour work day and I have 25-35% battery life left when I get home, heavy usage. Best stock battery for Android I've ever had. This is my 8th Android phone.
Sent from my SGH-T989 using xda premium

shyboy1 said:
this is exactly what I am talking about.
Before I had HTC G2 and same amount of use it last for whole day (around 12+ hours) but this one hardly goes upto 7-8 hours with one charge...
I did the battery wipe with full charge, if that makes any difference.
Click to expand...
Click to collapse
Why don't you try adding another core to your G2 and see if you can even get 6+ hours!!!
Cmon man, this is a dual core phone...it's just common sense that it will use twice as much battery power to get it to run smoothly.
But honestly, I was able to get 21hrs out of a full charge. With heavy use but i had it UC'd @ 1.2max and 192min. Still ran pretty smooth tho.

I get about 18 to 20 hours from a full charge. Stock. Non-rooted, and no modifications of any kind. I have all my apps auto-sync every 4 hours, and my usual display "on time" is around 4 to 5 hours. Here are some screen shots. This is the best battery life I ever had.

Just to add. My brightness is at 40%

is it better to use autobrightness on our device or a set brightness setting to save battery?

immunityx said:
is it better to use autobrightness on our device or a set brightness setting to save battery?
Click to expand...
Click to collapse
I'd say set it to certain level. Having the phone constantly adjust I would think would use more battery.