Develop Bugs

Make your battery last twice as long - HTC Desire

1. Turn your device ON, charge the device for 8 hours or more
2. Unplug the device,turn the phone OFF, charge for 1 hour
3. Unplug the device, turn ON wait 2 minutes (basically when the phone is all booted up and ready), turn OFF, charge for 1 hour
Happy longer battery life everyone!

http://forum.xda-developers.com/showthread.php?p=7690163
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sent from my Zuse Z1

Franz Jakob Tim said:
http://forum.xda-developers.com/showthread.php?p=7690163
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sent from my Zuse Z1
Click to expand...
Click to collapse
Didn't notice it had already been put down similar.
My bad.

Does this really work?
Batterys die slow normally, does this recover them?

Franz Jakob Tim said:
http://forum.xda-developers.com/showthread.php?p=7690163
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sent from my Zuse Z1
Click to expand...
Click to collapse
Ive done the method from that thread and it worked the first time, second time and more didnt see any difference really unless you do that every charge but i guess that would just kill the battery

I have done all the above and did't see any changes

Would be nice if this would work, but I doubt it...

That doesnt do anything, i get good battery from not having any auto sync updates, brightness is low, widgets for 3g, gps wifi etc.. thats how i get up to 2 days normal usage on full load.

Didn't make any significant changes to mine. I guess if it ever really works then this would be a brain new, never charged battery.
I can only make like up to 24:00 (no use), usualy 7-10 hours of moderate use, can kill in an hour our two on gps.
Sent from my HTC Desire using XDA App

I used this method when I got Desire and it worked very well! In a meanwhile my battery life weakened, probably because of new ROMs and kernels...so should I repeat this to extend battery life?

that reads like overloading the battery. didnt that just work for the old type of batteries?

HTC uses Ni-MH batts, guys. These things attain long lifespans through two things mostly:
a) keeping it protected from extreme temperatures
b) frequent top-ups
I don't think the idea of keeping it plugged in after full charge is a good idea. The ff is from batteryuniversity.com:
"Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.
Elevated temperature is anything that dwells above 30°C (86°F), and a high voltage is higher than 4.10V/cell. When estimating longevity, these conditions are difficult to assess because the battery state is in constant flux, and so is the temperature in which it operates. Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling."

Doesn't work for me I really need more battery life!

I learned a long time ago, even before my smart phone days, that battery life is something I'll never had.
Quick fixes will never work, but preparedness will. For instance; I have 3 charging cables. 1 at home, 1 at work and one in my car. I even had a spare battery for my previous phone.
Things like the first post, I'll never bother trying. It's silly. And looking at the poll results says it all.

I recently did it and I got 2 days out of my battery.
But I assume it will weaken over time and slowly have no effect.

Borat38 said:
HTC uses Ni-MH batts, guys. These things attain long lifespans through two things mostly:
a) keeping it protected from extreme temperatures
b) frequent top-ups
I don't think the idea of keeping it plugged in after full charge is a good idea. The ff is from batteryuniversity.com:
"Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.
Elevated temperature is anything that dwells above 30°C (86°F), and a high voltage is higher than 4.10V/cell. When estimating longevity, these conditions are difficult to assess because the battery state is in constant flux, and so is the temperature in which it operates. Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling."
Click to expand...
Click to collapse
What kernel is your ROM using?
Kernel's have a big impact on the life of your battery. I know mine doubled switching from kernels.

my phone has just recently started to give me the 15% warning then 2 minutes later switch off.
I used to get 10% and 5% before auto shut down.
I'm debranded orange on stock
2.2 2.29.405.5 (release keys)
kernel
2.6.32.15 [email protected]#1 (whatever that means)
Is this caused by software/rom based issues or is my battery on the way out?
(I did the fix in the OP and it did have a positive effect but that was months ago)

don't believe it's a good idea

Borat38 said:
HTC uses Ni-MH batts, guys. These things attain long lifespans through two things mostly:
a) keeping it protected from extreme temperatures
b) frequent top-ups
I don't think the idea of keeping it plugged in after full charge is a good idea. The ff is from batteryuniversity.com:
"Lithium-ion suffers stress when exposed to heat and kept at a high charge voltage.
Elevated temperature is anything that dwells above 30°C (86°F), and a high voltage is higher than 4.10V/cell. When estimating longevity, these conditions are difficult to assess because the battery state is in constant flux, and so is the temperature in which it operates. Exposing the battery to high temperature and being at full state-of-charge for an extended time can be more damaging than cycling."
Click to expand...
Click to collapse
HTC Desire doesn't use Ni-MH
theturtleman said:
What kernel is your ROM using?
Kernel's have a big impact on the life of your battery. I know mine doubled switching from kernels.
Click to expand...
Click to collapse
I'm interested in this, what kernel did you use first and to which one did you switch? Also what ROM do you use and how much battery life do you get now?
Grtz

Surely when the charge reaches 100% the charge is stopped?

[Q] Battery Temperature

Something Ive always wondered, what is an "AVERAGE" battery temperature for cell phones? I ask because im using setcpu and i never knew the temp. to start getting concerned . Right now it is 87.6 degrees with the low clock at 1ghz on demand at all times.

amalio357 said:
Something Ive always wondered, what is an "AVERAGE" battery temperature for cell phones? I ask because im using setcpu and i never knew the temp. to start getting concerned . Right now it is 87.6 degrees with the low clock at 1ghz on demand at all times.
Click to expand...
Click to collapse
what is that in Celsius dont give Fahrenheit

amalio357 said:
Something Ive always wondered, what is an "AVERAGE" battery temperature for cell phones? I ask because im using setcpu and i never knew the temp. to start getting concerned . Right now it is 87.6 degrees with the low clock at 1ghz on demand at all times.
Click to expand...
Click to collapse
That is normal temperature. Once you use the phone (play games, internet, etc) it will reach around 90-100 degrees.
Sent from my SGH-T989 using xda premium

amalio357 said:
Something Ive always wondered, what is an "AVERAGE" battery temperature for cell phones? I ask because im using setcpu and i never knew the temp. to start getting concerned . Right now it is 87.6 degrees with the low clock at 1ghz on demand at all times.
Click to expand...
Click to collapse
There are several different applications on the android market which will tell you the temperature of your battery in Celsius and Fahrenheit. That is about average temp, I have two phones sitting next to me right now and they are both in the mid 80's range on the temp. You want to be concerned if your battery reaches temperatures exceeding 101 degrees (Fahrenheit) (38 Degrees Celsius) when doing any activity and especially if it is getting that hot while sitting in standby.

I've had a recent problem with mine the other day I was having a really bad battery drain and the battery was over heating bad(im talking 105 degrees) since then I was able to fix what was draining the battery but I noticed when I use only my car charger (which was meant fire my vibrant) it heats up. I'm thinking the car charger voltage is different.
Sent from my SGH-T989 using Tapatalk

the highest mine ever got was 56C
i could have probably fried an egg with that

Mine stays around 82 while screen off. On and playing games it got up to 110.

40 degrees Celsius?

My Galaxy Nexus often increases its heat to around 42 degrees Celsius (108 fahrenheit) constantly with minimal use (light 2D gaming for about 5 minutes), surfing the app store and playing around with the menus for a 10 minutes. I have installed the battery monitor widget application (free) which tells me everything and gives a timeline of different temperatures the phone reaches.
Constantly the phone is 30 degrees Celsius (86 Fahrenheit) and above, even during minimal use of apps (only running one app at a time, I selected the phone to only use 2G networks and it has no data plan).
This seems very very hot for a phone. My Galaxy S2 doesn't get past 28 degrees celsius (82 fahrenheit) under very heavy use whilst on 3G. My HTC Mozart is the same as the Galaxy, it barely gets above this temperature. Is the Nexus supposed to get this hot?
So far my battery life is set at 17 hours battery life with minimal phone/texting on 2G (literally 2 text messages and 1 phone call per day), 30 minutes of light 2D gaming and zero music or videos being played. There are no programs running in the background and the brightness is set at 40% or below.
EDIT: Even on standby without use for hours the phone has NEVER gotten below 26 degrees celsius (78 fahrenheit) .

I'm hoping someone could share info on the heat of their devices/the normal range of heat that these kinds of devices should be putting out. It sounds interesting that this much heat can actually be created, more elaboration would be better though.

bumping for answers for op.

I noticed a dramatic difference in the temperature from my evo 4g. Some potential causes:
* high stock voyages (there is a great thread in the Dev section about uv kernels)
* when running modaco's brightness patch it got worse for me.
* since it happens with the screen off, it is probably not tht...

83mck said:
EDIT: Even on standby without use for hours the phone has NEVER gotten below 26 degrees celsius (78 fahrenheit) .
Click to expand...
Click to collapse
What's your ambient temperature?
Absolute temperature doesn't tell us much, what's useful is the delta between device temp and ambient temp.

Chirality said:
What's your ambient temperature?
Absolute temperature doesn't tell us much, what's useful is the delta between device temp and ambient temp.
Click to expand...
Click to collapse
The room temperature is air conditioned around 18 to 25 degrees celsius (64F to 77F). The phone should not be hitting above this range, especially on standby. It should not reach 40 degrees Celsius whilst texting/app surfing on 2G.

Same issue here.
My Nexus One's battery is at 24C (plugged in, not charging).
And by GNex's battery is at 37C (plugged in, charging)
Okay 37 is fine but 42 is not :/

right now I have flashed a few roms and am browsing tapatalk.. at 34 Celsius. Just applied my undervolts though so we will see
Sent from my Galaxy Nexus using xda premium

Mine increase more than 42c when using too.

Just bought the phone and mine seems to overheat too much... going to buy a case....

Battery says 46 degrees cel...

also i noticed on galaxy nexus it get too hot around the camera on the back and the earpiece on the front.
noticed the problem mainly when in an area with weak reception. or while charging the phone even with good reception.
its something with the radioROM or hardware.
any suggestions??!!

normal
Its normal! 76F when not in use 90-101 in use 101-120 with charger and using . I called Samsung . My euro gs2, at&t gs2 and my skyrocket all have the same temps remember this is a very thin plastic phone with battery right there behind tiny plastic cover . Think of it like this dose ur computer get hot when u use it?? ? Have u ever even thought bout that? No cause ur not holding it in ur hand .

+1
This is a dual core phone, it is going to run hot because it's a dual core processor with no cooling other than dissipation. It's not a problem unless your phone is actually crashing because of it. I've seen mine get up to 46C during long periods of gaming/charging.
I expect the hardware has been developed to tolerate these temperatures or we'd see a lot more "my phone overheated and now it's a brick" posts or even "my phone exploded into flames" posts. Have only seen a couple of the former and none of the latter.

Running hot after root, rom and maybe 'incorrect charger'
So like others here my GSM version Galaxy Nexus phone is quite hot at the top right corner back and front, near the camera. Only when the screen is on. Battery drops very rapidly too.. like 1% every 30-45 seconds...
This heat is brand new. I recently rooted and romed the device after the recent ICS update cause signal loss when the screen was off. I tried AOKP, various kernals and have now returned to the original backup of android 4.0.2. The heat continues with the screen being on, through all of this. Doing nothing, wifi connected... just on. Screen off no issues. No apps are installed except stock. Default Kernal again.
I also noticed i plugged the phone in with my blackberry playbook charger at the same time as all of this. The specs on that are playbook charger output is 5V @ 1.8A..
I notice a few other people posting about this so want to know if this might be rom related somehow, or if perhaps ive done something to the hardware from the charger. I've tried a spare battery that was not used with the charger at all and the heat continues.
There was no heat at all like this before this last 24 hours so its not 'normal use'. Promise Hope someone has some possible suggestions to try

Mine is at 31 right now.. listening music and xda... if play games it goes to ~35 if I plug it in it gets hotter than 40...
Sent from my Samsung GNexus <3

[Q] Are these temperatures normal?

I am still under the period where I can have this replaced so im asking if these recordings are normal. 49+ deg celsius when was using the quick charger while making some spotify music offline. Around 900mb on wifi. 43+ was when i was playing hearthstone on LTE. Also having trouble reaching 3h screen time with moderate use. Also worth noting that i think this is the processor heating up, not the battery.
Should i have this replaced?

Every mobile processor in the world will heat up on heavy load content, we are not using feature phones anymore, and this is our reality now, smartphones get warm and hot and we need to live with it =]

Also, this is where im at right now after an hour and 10 use at 85% at 41 deg celsius

rafyvitto said:
Every mobile processor in the world will heat up on heavy load content, we are not using feature phones anymore, and this is our reality now, smartphones get warm and hot and we need to live with it =]
Click to expand...
Click to collapse
Thanks but isnt 49 degrees celsius a little too much on a quick charge while being used?

dinzkie said:
Thanks but isnt 49 degrees celsius a little too much on a quick charge while being used?
Click to expand...
Click to collapse
It isn't too much, the battery is receiving electricity at a faster rate which causes the phone to heat up and then using the phone on top of that produces even more heat. It is also recommended not to use it while it is on the charger (the fast charge ones).

So this is just normal then?

Is this phone simply... warm?

Does this phone feel warm in your hands most of the time? (Except when idle). Mine is warm. Not hot, but warm every time I use it. Should I be concerned? Or is this a feature for coming winter? It is a replacement. And the first one was mostly the same actually.

If we consider the performance of this mobile and compare it with a lap top or table PC I think it outstanding how cool this mobile runs.
Remember there is no cooling system. Now look at the cooling systems on similar devices.
All flag ship uber mobile devices can get warm under load. I have owned hundreds of mobiles and all powerful models run warm when pushed.
My Samsung Galaxy S6Edge plus runs warmer than my note 7 and my Samsung galaxy S6 ran even warmer.
No cause for concern.
Ensure you only use Samsung chargers designed for the Note 7 to charge the Note 7. NEVER charge any phone using a third party charger.
Enjoy your lovely Note 7, incredible device.
Ryland

Thanks for your opinion. However, it is warm not only under heavy use, just when browsingy reading news, checking email... normal use. Just feels warm in my hands, that is all.

notefreak said:
Thanks for your opinion. However, it is warm not only under heavy use, just when browsingy reading news, checking email... normal use. Just feels warm in my hands, that is all.
Click to expand...
Click to collapse
If you have a genuine concern you should return your device to your store and request they examine it. Cant lose a thing by doing that if it puts your mind at rest.
Ryland

I don't know if I should be concerned about this or not. That is why I am asking other users about their own experience. I see yours is cool unless in heavy use, lucky you .

notefreak said:
I don't know if I should be concerned about this or not. That is why I am asking other users about their own experience. I see yours is cool unless in heavy use, lucky you .
Click to expand...
Click to collapse
Unsure what else I could have replied. Sorry I can be of no further help to you on this point. :highfive:
Ryland

The phone's temperature is a measure of how fast the battery is draining. Expected energy consumption depends on what apps and services you may have running in the background, in addition to what's actually on your screen at the moment. So you should look at the battery-usage data (in Settings|Device Maintenance|Battery) and see what apps are responsible.
When my phone is idle, it is cool to the touch and the battery temperature is around 27C.

Nothing special, just apps that I am mostly using. No apparent drain.
Mine is cool when idle too, but warm the rest of the time.

notefreak said:
Nothing special, just apps that I am mostly using. No apparent drain.
Mine is cool when idle too, but warm the rest of the time.
Click to expand...
Click to collapse
Use "GSam battery monitor" and see what temperatures the battery reaches when you are using it. It should feel more warm than other phones cause its made out of metal/glass.

That is a brilliant explanation about the glass thing, why didn't I figure this out? So it kind of is a feature for winter .
Well I used another app and battery shows at about 34 degrees C, CPU shows around 45 degrees. The highest I saw for a second was over 60 degrees (CPU) when downloading apps.

Don't forget that the screen also produces a fair amount of heat...especially when the brightness is cranked up.
Sent from my SM-G928F using XDA-Developers mobile app

I considered that. But strangely it feels warmer on the top half of the phone.

If you dont tell us the tempreture how do you expect any useful feedback?
We accepct C or F

Umm, I did, bottom post on page 1.

mine is actually mostly "cold". although it's rooted, debloated and i'm using the hydra kernel. Battery life is amazing...

I've never had mine hot, even when playing games it's cool. When charging, it's cool. I'm going to try a stress test and take some readings see what happens I think. But I'm not worried about it heating up a bit.

notefreak said:
That is a brilliant explanation about the glass thing, why didn't I figure this out? So it kind of is a feature for winter .
Well I used another app and battery shows at about 34 degrees C, CPU shows around 45 degrees. The highest I saw for a second was over 60 degrees (CPU) when downloading apps.
Click to expand...
Click to collapse
I believe this is a little to warm for minor task such as download apps, browsing, text messaging...etc, though I also think these temps shouldn't worry you as long as 60 is the highest you see under full load just my 2 cents.

You're missing a really important detail, the ambient temperature. You should measure the difference between ambient temperature and the battery temperature. Comparing the battery temperature across different devices in different parts of the word is not accurate or fair.

joaodrp said:
You're missing a really important detail, the ambient temperature. You should measure the difference between ambient temperature and the battery temperature. Comparing the battery temperature across different devices in different parts of the word is not accurate or fair.
Click to expand...
Click to collapse
True, its been that hot here this year, 43, that even the chickens laid hard boiled eggs!
Ryland

my n7 v1 was warm and the battery lasted forever.
my n7 v2 is noticeably hot, and the battery drains 20% faster, which seems to be the most common complaint in the news.
Samsung has not addressed this. The phone was much hotter when first setup, and after a few hours seems to settle.
I'm sure rooted, and debloated its a little cooler.