Reverend Mayhem
Newbie
has anyone tried a larger capacity battery from ebay etc, i have seen them really cheap and wondered if they are worth a go?
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some help for better battery life inside..
- Thread starter K33VRN DHD
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- htc desire hd
HD addicted
Lurker
I have bought a 1600maH but it lasts just as much as the original one.
I'd have to disagree with this. The trick is to use the task killer wisely. Don't kill services that your phone needs to run and will just automatically start up again anyway.
But do use it to kill things that are obviously not necessary. Froyo seems to keep every single app that's been opened running in the background indefinitely. Of course this is going to use memory and CPU, and therefore battery.
I installed 'Battery Doctor' and when checking the list of running tasks, I was surprised to see everything from the Flashlight to the pdf reader ticking away in the background. As a test I killed all processes, then went back to the home screen, opened the phonebook and dialled a number. I then went back to check which tasks had restarted. These were obviously the ones I shouldn't kill, as they are going to restart anyway.
As a result of killing uneeded background tasks, I've noticed a sizable increase in battery life.
Then I'd bet you were killing processes that you use all the time.
As you stated yourself, it was only part of some tweaks you made. It's highly unlikely that uninstalling a task killer app would give anybody a 300% increase in battery life.
I don't really understand why people seem to be going to such extreme lengths to conserve battery power. I have auto-brightness on, wifi on when I can connect to a network (at home basically), auto-sync on (with a schedule rather than push updates where I can) and power saver set to 15%. The battery lasts 2 days before I need to charge it back up. The best part is the phone has done this while making enough calls to use more battery on calls than on the display!
As for 3G, I don't know how much difference it makes compared to 2G, but if you're using a fair amount of data wifi uses far less battery power (not sure if this has been mentioned already)
As for 3G, I don't know how much difference it makes compared to 2G, but if you're using a fair amount of data wifi uses far less battery power (not sure if this has been mentioned already)
my battery life is crap on mine, i charged it up full last night (full at 12.00 mid night) i used task killer to kill all apps turned of brightness, and when i woke up at 7 a.m it only had 30% battery left. If i do the factory reset and everything else in whats said at the begining of this topic will i loose al my text messages and everything else
Auto-brightness shouldn't make any difference if you're going to bed and leaving the phone on standby. DO NOT use an app killer on Froyo, it just opens up the applications again and turns them off when they've been idle for some time. The only thing I can think of that would be draining your battery overnight would be syncing a large amount of data. If you're not using wireless for it battery power gets drained quicker (simply because you'd be downloading/uploading the data over a longer period, rather than in a short time with a fast wireless connection to the internet). I found that HTC Sense got stuck syncing at one point and drained 70% of my battery within a few hours on a 3G internet connection, so I had to turn off syncing with that. Other than some obvious stuff like schedule syncing where possible I couldn't really advise much further myself.
I used information from this webpage, which is based on stuff on an xda forum, but has other tips that seem to be quite helpful:
Battery Calibration | Hemorrdroids.net
The link in the first sentence of that page would be a good start I reckon. I don't know what you've tried already but this is quite comprehensive compared to other things I've seen. For the battery calibration I only followed steps 8-12 (those were the only steps on the xda page). To give you an idea of how good my battery's been after calibrating it, I've had my phone unplugged for roughly 13 hours with more or less minimal use (much like you leaving yours unplugged while you were asleep) and it's only used 20%, of which over half of it was used on phone calls and the display; and I'm not exactly reining everything in to conserve every sliver of energy the battery has.
I hope this helps. I wouldn't want to come across as an arrogant twat among what seems to be a lot of people who would find their batteries more useful as skipping stones without giving any useful information
I used information from this webpage, which is based on stuff on an xda forum, but has other tips that seem to be quite helpful:
Battery Calibration | Hemorrdroids.net
I hope this helps. I wouldn't want to come across as an arrogant twat among what seems to be a lot of people who would find their batteries more useful as skipping stones without giving any useful information
A very interesting link, the information contained in the thread is to do with extending the power output of your battery by way of calibrating the Android OS to accurately read and represent the percentage remaining of your battery.
Due to the nature of the way a batteries charge and discharge cycle changes with use, a chip in the battery keeps a binary log file which is unique to your battery, and is basically a table of values which resolves actual mAh measured in your battery compared with percentage remaining displayed. Going through this cycle will accurately calibrate this, so that your phone will display the correct remaining battery as a percentage.
It will NOT change the amount of charge your battery holds, BUT what it will do is make your battery accurately report it's state to the phone, and stop your phone from shutting off when there is still usable charge left in the battery. This may be a common problem with the Desire HD's battery and certainly would explain why so many users are reporting radically different battery performance.
Also, thinking more about the above, this adds heavy weight to the argument of the importance of doing full charge/ discharge cycles before first using your phone. It's important to note that the chip on the battery does it's own calculations, and also allows your phone to write data which Android has calculated to it. This is where some users batteries may be getting messed up.
If you fire up the phone out of the box with the factory charge, OR turn your phone on during first charge then this would set highly inaccurate values into the battery log file, and could indeed cause your phone to think that the battery is empty when in fact it has a lot of charge left. This would totally explain why people report that the battery 'settles in' after a weeks use. The chemicals in the battery are not changing at all. Just the log is becoming more accurate.
Since this information is stored on the battery, this could be tested by swapping a couple of different original batteries and seeing how the behaviour changes.
Very interesting.
If you fire up the phone out of the box with the factory charge, OR turn your phone on during first charge then this would set highly inaccurate values into the battery log file, and could indeed cause your phone to think that the battery is empty when in fact it has a lot of charge left. This would totally explain why people report that the battery 'settles in' after a weeks use. The chemicals in the battery are not changing at all. Just the log is becoming more accurate.
Since this information is stored on the battery, this could be tested by swapping a couple of different original batteries and seeing how the behaviour changes.
Very interesting.
Ah, I see. The xda page I used for the calibration is titled 'How to double battery life (WORKS!)'. If it's as you say and the capacity isn't increased then I would think that battery calibration is indeed a common problem, and a rather bad one at that!
widehead
Android Enthusiast
Yes but surely you have them all backed up in your google contacts (gmail) don't you?
I mean Android is pointless without being part of the google cloud.
widehead
Android Enthusiast
get rid of the task killer!!!!
Yasin HD
Lurker
Hi
Im new to this forum thingy so be patient with me!
My DHD battery is not as good as other people say it is.
My phone is off charging at about 10 or 11am and by doing minimum usage its 54% by 8pm..
I have 3g on when i leave my house and wifi on when im in my house. And my mail on everyhour and facebook update is never.
The problem is i've calibrated the battery and no difference and my battery just descreases even when im not using it.
So Any ideas or ways to improve it..?
Thanks
Im new to this forum thingy so be patient with me!
My DHD battery is not as good as other people say it is.
My phone is off charging at about 10 or 11am and by doing minimum usage its 54% by 8pm..
I have 3g on when i leave my house and wifi on when im in my house. And my mail on everyhour and facebook update is never.
The problem is i've calibrated the battery and no difference and my battery just descreases even when im not using it.
So Any ideas or ways to improve it..?
Thanks
widehead
Android Enthusiast
This is a misunderstanding of how Android works. Android keeps apps in "memory" not running and using up CPU cycles or battery. It takes less power to do that than to kill them and open them again. FACT.
Uninstall task killers. They are pointless.
widehead
Android Enthusiast
Hi
Im new to this forum thingy so be patient with me!
My DHD battery is not as good as other people say it is.
My phone is off charging at about 10 or 11am and by doing minimum usage its 54% by 8pm..
I have 3g on when i leave my house and wifi on when im in my house. And my mail on everyhour and facebook update is never.
The problem is i've calibrated the battery and no difference and my battery just descreases even when im not using it.
So Any ideas or ways to improve it..?
Thanks
Seems like you have excellent battery life right there.
Yasin HD
Lurker
Nope it dont, all I did was install 2 apps from the market and go on Facebook couple of times. Now tell me, by doing that it drains nearly half your battery.
Can you give us a link that explains this please?
Menu->Settings->About phone->Battery->Battery use
You can see what's using battery power and you can tap individual items to see the "Time on". Your battery use sounds alright actually. Most people seem to be jumping up and down because they can't last the day on a single charge.
I've found downloading/uploading a large amount of data on 3G drains the battery quite quickly, but I can't imagine apps being very large downloads...
Yasin HD
Lurker
Right now i got like 40% left or even less, unpluged at 8am after full night charge went college went on fb couple times and 10minutes in games..
PLEASE ANY HELP WITH IMPROVING BATTERY LIFE???
What does Battery use say is using the most power?
Yasin HD
Lurker
Cant say now because i've restarted the phone and its on charging.
Still any useful advice on having longer battery life?
Thanks.
D
Deleted User
Guest
Got one of these for camping trips and long flights, small enough to sit in your pocket next to the phone charging it. Very impressed, TeckNet Dual-Port iEP380 5000mAh Universal USB Battery Pack For iPad, iPhone, iPod, Nokia, HTC, Samsung, Sony Ericsson, Motorola Droid X Eris, HTC Android Phones (Evo, Incredible, G1, Nexus One), Blackberry (9630, 9700, 9550, 9800) and others. Got mine from Amazon