Related
As I posted in another thread:
I am lucky to even get 12 hours with minimal use. No calls, just some texting and maybe browsing my bank website. Screen is always the killer for me, even on 20% brightness. If I go lower the screen actually flickers.
I bought the red HTC Chichitech batteries and they didn't help me at all.
Tried overclocking module, didn't change much.
The only app that ever shows any significant battery use (over 5%) is Maps, when I use maps.
Click to expand...
Click to collapse
I am rooted, S-OFF, using the Sense Modaco ROM. Battery usage was no better with the Stock Bell Rom before rooting or S-OFF.
My main concern is the screen flickering at low brightness. it's as if it's unable to decide on a specific level of brightness and makes me question if it's actually saving any power.
I set my phone to Auto brightness and I am going to see if that is actually worse of if it's on par with 20%.
Ugh - just realized there is another thread pretty much all about this. I thought it was a different issue. Still, does anyone know if there is a better batch of phones or something? I have a FutureShop warranty so it'd be easy enough for me to replace if it will actually provide a solution
No-one has posted anything, to my knowledge, about a different batch of phones having better battery life. I would check out the other threads about battery life (including those on the G2 side too) and see if you can get yours to last better. But it could just be something faulty on your phone/battery.
Auto-brightness would make it even worse..because there is some type of bug or something that isn't making it function like it should. I was also getting terrible battery life until I followed some of these steps: http://www.goodandevo.net/2010/05/20-tips-to-improve-htc-evo-4g-battery-life.html
Biggest killers are any widgets that are constantly updating..or facebook/twitter apps that are constantly updating. As well..i recommend SetCPU to underclock your phone when your screen is turned off. This should also help with conserving battery life along with some of the steps provided in that link.
steviewevie said:
No-one has posted anything, to my knowledge, about a different batch of phones having better battery life. I would check out the other threads about battery life (including those on the G2 side too) and see if you can get yours to last better. But it could just be something faulty on your phone/battery.
Click to expand...
Click to collapse
I am considering waiting a month or so and then having mine replaced. Unless I managed to figure something else out. My HTC Legend had better battery life.
Rickroller said:
Auto-brightness would make it even worse..because there is some type of bug or something that isn't making it function like it should. I was also getting terrible battery life until I followed some of these steps: http://www.goodandevo.net/2010/05/20-tips-to-improve-htc-evo-4g-battery-life.html
Biggest killers are any widgets that are constantly updating..or facebook/twitter apps that are constantly updating. As well..i recommend SetCPU to underclock your phone when your screen is turned off. This should also help with conserving battery life along with some of the steps provided in that link.
Click to expand...
Click to collapse
The reason I want to try auto or higher brightness is to see if lowering it was actually saving me any battery life. I am curious if there's a driver or display issues that causes it to use the same amount regardless of the setting. So far I don't seem to be running out any faster @ auto than I was at 20%, but it hasn't been a long enough time to tell for sure.
Also I am unable to do the battery tip for the evo because once I turn off the phone and go to charge it again, it's instantly green. But I am going to try it anyway even though it's green.
Since writing the first post I used the OC module to get my phone to 1.2ghz. I have SetCPU set to run on boot with the onDemand setting. I have a profile that says to slow the CPU when the screen is off. From what I've read it doesn't make a ton of difference with this particular phone, but we'll see...
rewen said:
Also I am unable to do the battery tip for the evo because once I turn off the phone and go to charge it again, it's instantly green. But I am going to try it anyway even though it's green.
Click to expand...
Click to collapse
Yep, that's what I found too, when you try and charge it thinks it's already charged and goes green straight away again. But as you said, worth a try.
I just wanted to report back and say that I had my phone replaced. So far so good:
- No screen flicker issue at low brightness
- Battery has lasted nearly 20 hours with moderate-heavy use (played NFS Shift, setup basically everything on the phone after rooting, installed all my apps, backups, flashed some roms, 20+ texts, 3-4 short calls, showing people random apps.)
If it's not all in my head then this is definitely much better now!
Curious. It seems that everyone who reports the screen flickering problem has poor battery life.
Defective displays?
I feel my battery life is pretty bad as well. I've unplugged the phone this morning at 7 AM. Now it's 2 PM, and I'm at 37%. In between, the only things I've done are: send/receive a few emails and chat on gtalk. Brightness is at 40%, animations are turned off, wifi and gps location off. Using latest Cyanogenmod (6.1.1) and have no screen flicker issues
Edit: 17 minutes later, it's now at 27%
How long have you had the phone for?
Initially the first few days I got the phone, battery life was really bad, could drain in a few hours.
After a week or two of use, I now have reasonable battery life, the phone can last all day with light usage and still have lots of juice left. Actually I think if you make a few calls and a few txts, battery could last 2 days. If you play with it, one day for sure but you need to plug in over night.
(if you're talking to me) It's quite new, just picked it up on Friday actually. Also I've kept on researching, and it seems that poor coverage (like I have at work, from 7 til 3) tends to drain the battery even more, since the phone keeps switching between HSPA, 3G, etc.
I had my first one for about a month at least. This replacement was from Saturday.
Today I've had my phone unplugged since 8am, it's 5:30pm and I have 45% battery left, but the screen is the #2 user. Standby is #1 @ 40% of my battery usage, due to over 4 hours of time without a signal. The screen is only 24% and has been on for 48 minutes. Voice calls is #3 at 23% battery usage, with 23mins of calling.
My other phone would have died by now.
Also I spent an hour of streaming bluetooth audio to my car. Bluetooth doesn't even register on the battery usage. I've never seen it use more than 2% and it's always on. I am not sure why people say it uses a lot.
Just want to share my experience.
I too had poor battery life. Stock Bell ROM. Got to 3:00 pm and it used to die. Use this for work. Pushing data all day from Exchange server, bluetooth on all day because I'm in and out of the car, talk on average 30 minutes per day, texting, surfing, tethering, blah blah. Believe it or not, my old Omnia II would get me thru the day no problem.
I was also tempted to return it. But I decided to try a few things. Installed Set CPU and a task killer at the same time. Shut down as many tasks as possible on start up. Widgets and accounts, except Exchange-push, run and sync every hour. I get about 40% battery by dinner. I am happy now .
I'm quite happy with my Desire Z's battery life, It lasts for about 36 hours with moderate use. I have Juicedefender and Ultimatejuice installed, data or wifi are opened only when an app needs data connection, this increased my battery life by 10 hours or sth like that. Nice app.
I had terrible battery life until I went overseas. It is a stock Bell ROM, but I arrived in Spain Monday and am using a Spanish SIM card.
My battery life has increased from 14 hours with Bell's 3G signal to my current 27 hours and 35% remaining battery using GSM and WiFi always on. Funny thing is that no matter where I am it says the screen is by far my biggest power drain.
Where did you buy your Desire Z and how did you get it replaced? I'm with Bell and they would take mine to send out for "repair" but not sure if that will do anything. This will take 3-6 weeks apparently and I'm not sure if they it is worth it.
I'm running 10 hours with that I consider fair usage (few calls, text, map/gsp, and facebook.) My display is the highest battery usage at 60% and on for about 1:45h. I'm very disappointed.
Hey,
it's the same with my G2.
Max 24h.
I've standard ROM installed.
No WiFi.
Brightness to about 30%.
Juice Defender is installed and I'm surfing and just the regular stuff, but even if it's just in standby, it's taking a lot of power (display takes most)
Best!
-blubberor
architect_ said:
Where did you buy your Desire Z and how did you get it replaced? I'm with Bell and they would take mine to send out for "repair" but not sure if that will do anything. This will take 3-6 weeks apparently and I'm not sure if they it is worth it.
I'm running 10 hours with that I consider fair usage (few calls, text, map/gsp, and facebook.) My display is the highest battery usage at 60% and on for about 1:45h. I'm very disappointed.
Click to expand...
Click to collapse
I bought mine at FutureShop since I didn't think Bell would let me without buying at least a month of service (or being an existing customer). I also purchased FutureShop's extended warranty which is how I was able to get it swapped for a new one so quickly.
I use the extended battery for the evo. Lasts about 1.5 days with ass loads of use. Just have to trim the plastic edges a bit.
Sent from my T-Mobile G2 using XDA App
I have a couple of those red chichitech batteries but I wasn't able to notice any improvement with the problem phone.
My Desire Z also has a flickering screen at lowest brightness, and with moderate use it dies after about 12 hours max. Even on lowest brightness the screen ueses 59% battery. I rarely manage to make it through the day without having to charge the phone. Im on stock ROM with latest OTA (1.72) btw.
Gonna have it replaced next week just cause of the flickering screen. Has anyone tried the 1700mAH battery from seidio?
Im getting some weird battery stuff, as well as the Android OS drain. If I restart my phone, once in a while It drops like 20-30%. i'll go from 46% to like 18%. I see the threads about slow draining, but mine seems to happen instantly sometimes (3 different times so far in a week), anyone have solutions? Got it from someone on ebay, can I still/should I RMA?
Someone posted a kernel fix in the international GSII forum, so we're either waiting for that to get ported over here or wait for samsung to release a fix. I have that same bug too. What percent r u getting on the Android OS? Mine is usually in the 60's.
Yeah I saw that thread, and I saw the 2 things causing it. Waiting for that fix I guess, hopefully it solves the big battery drops as well as the small draining. Mines pretty high, 30-50% I believe, and then cell reception takes 10-20% with LOS
That's alot better than mine. Although, I don't have that LOS problem. I'm running stock atm. Are u on a custom rom?
Running Starburst 1.5, stock was better for no LOS. But I like the customization on Starburst. Hopefully by the end of this week the kernel we be ported over.
Most likely a problem with the battery level algo and not an actual battery charge drop. It's probably showing the correct value after the reboot.
Using battery spy I was using like 12%-15% per hour, not even doing anything. Saw online that formating the SD card might help, just did, and now im using .8% per hour. The hell, something was scanning the SD card or something. Much better now, hopefully itll last 10-20 hours instead of 6 hours.
edit: so it went back up again. At .8% it will last 2 days+, but since the events keep taking the CPU, its draining it. I got it down to 4-8% by taking the SD card out. At least it will last a little longer. Cant wait for the fix, this baby will last days after.
Damn that sucks. I just formatted my card too cuz I was running out of options. Keep us updated tho.
so I think media scanner is draining, I downloaded rescan media root from android market and before I was draining at 12% per hour, but when I disable it with the app, it goes down to 5-6%. Anyone else try? Maybe thats something thats draining.
Oh btw have u tried turning off wifi? It only drained 6% after being off the charger for 9 hours. I havent touched the phone during that time span tho. Android os still in the 50s btw.
Sent from my SPH-D710 using XDA App
These are my overnight stats when I was sleeping. It's usually worse when wifi is on.
manekineko said:
Most likely a problem with the battery level algo and not an actual battery charge drop. It's probably showing the correct value after the reboot.
Click to expand...
Click to collapse
this is almost definitely correct. battery doesn't drop 15-20% because of reboot...the reading is wrong. Battery drivers have been bad on a few of the latest android phones. Just look at when your phone stays at 99% for the first 3 hrs of use each day...what, does it just get really inefficient in the afternoon because of food coma from lunch?
toprock23 said:
Oh btw have u tried turning off wifi? It only drained 6% after being off the charger for 9 hours. I havent touched the phone during that time span tho. Android os still in the 50s btw.
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
Trying now, seems to be charging faster too. I was mainly on wifi because cell standby was really high, keep getting LOS. But maybe I wont with wifi off now, and i'll see how battery does. ill keep you updated.
Still bad. Can only wait for the patches/fixes. 8 hours doing nothing almost. Sigh.
edit: sent to the galaxy support on twitter, see how that goes.
http://twitter.com/#!/GalaxySsupport/status/124174089085652992
Hey man, I got one more tweak for u to try. I just rooted my phone w/ the latest zenomax kernel and Starburst 1.5. Download setcpu and create a profile for "screen off". Set it to 200-500mhz on demand. In theory, this should prevent 100% cpu utilization while the screen is off. I'm testing this myself atm, so I can't give u my battery stats yet.
toprock23 said:
Hey man, I got one more tweak for u to try. I just rooted my phone w/ the latest zenomax kernel and Starburst 1.5. Download setcpu and create a profile for "screen off". Set it to 200-500mhz on demand. In theory, this should prevent 100% cpu utilization while the screen is off. I'm testing this myself atm, so I can't give u my battery stats yet.
Click to expand...
Click to collapse
Think I have the v3 version and 1.5 as well. I have setcpu set to 200-400 powersave. ive tried others and same. Suspend and events/0 keeping eating at the CPU. Thanks for the suggestions though.
figured i'd chime in here. i've had days where the battery was fine and days where the battery was absolute trash. it's happened on stock, and it's happened on root. but it almost always seems to coincide with LOS. the first picture is one of several instances where i've had pretty fast drain followed up by an instant dump in charge under normal use. it's strange how after the drop, it slowly works back up then levels off and drains normally. the 2nd pic is from today. i left my phone at home on accident when i went off to work, and when i returned, i had LOS and this battery stat. you can tell where i lost signal . the last pic is from yesterday while i had the phone at work all day and light use; a nice consistent drain.
FU battery drops and FML
Ok so i read all the posts in this thread and i understand theres a issue that effects the phone from even knowing what the battery % is. i had to post these though. i was at 47% then rebooted my phone. phone boots up and yehhh! woop woop 8% now mind you if you look at the graph it shows a nice constant cerve downward but steady because i was using my phone the entire time. now after the restart/batery drop of 40% i kept using the phone constantly but its funny how it took me over a hour of screen on to go from 8% to 5% !!!!! i bet to get from 5% to 1% it will take 2 more hours for sure. you can see the graph start to flatten out like its a super battery after the 40% drop because it didnt really drop to 8% !!! normally i wouldnt care since my phone battery last just as long, it just goes down really slow from 8%-1% but at 5% it auto dims screen and wont let me use my camera for the next 2-3 hours while i knock off the remaining "4%" of battery left. fml
Get Starburst v1.6. He removed DRM processes which should lower Android OS usage and thus battery draining. Plus with the LoStKernel, I haven't had any issues with losing signal since.
Also, use Titanium backup to remove running services that you don't need. I got rid of the stock email client, digital clock, media/social hub if you don't use those. They don't take up a lot of ram, but every little bit helps.
My battery life has improved after battery calibration. I suggest you calibrate if you didn't already so your battery usage graph may be more accurate. Hope this helps.
Thanks for the tips! I was wondering how you would calibrate the battery. Is it the same as wiping battery stats from CWM?
Currently running the CM9 unofficial (http://forum.xda-developers.com/showthread.php?t=1561816)
I have tried radio 0312 and 1111 (http://forum.xda-developers.com/showthread.php?t=1134451)
I have tried aeroevan's v10 and v10.5 kernel (http://goo.im/devs/aeroevan/kernel/vivow/)
My battery life is pretty low. At max I can get about 4 hours of usage, throughout the day.
It looses about 20% in a 6 hour sleeping period (deep sleep not working?)
ideas?
thank you.
songokussm said:
Currently running the CM9 unofficial (http://forum.xda-developers.com/showthread.php?t=1561816)
I have tried radio 0312 and 1111 (http://forum.xda-developers.com/showthread.php?t=1134451)
I have tried aeroevan's v10 and v10.5 kernel (http://goo.im/devs/aeroevan/kernel/vivow/)
My battery life is pretty low. At max I can get about 4 hours of usage, throughout the day.
It looses about 20% in a 6 hour sleeping period (deep sleep not working?)
ideas?
thank you.
Click to expand...
Click to collapse
Well,... I got amazing battery life on Aerovan's kernel v9. I never tried the newer kernels. And I get pretty good battery life with the TSM UKB ROM too. I think I am on radio 1111... Hmm.
If I don't use my phone I have 84% at the end of the day. CDMA on (not in airplane mode), wifi on.
Running codemed cm 7.2 kang (6/19)
Sent from my Incredible 2 using xda app-developers app
songokussm said:
Currently running the CM9 unofficial (http://forum.xda-developers.com/showthread.php?t=1561816)
I have tried radio 0312 and 1111 (http://forum.xda-developers.com/showthread.php?t=1134451)
I have tried aeroevan's v10 and v10.5 kernel (http://goo.im/devs/aeroevan/kernel/vivow/)
My battery life is pretty low. At max I can get about 4 hours of usage, throughout the day.
It looses about 20% in a 6 hour sleeping period (deep sleep not working?)
ideas?
thank you.
Click to expand...
Click to collapse
What are you synching during the day and at what intervals? Governor and Min Max Speeds? Do you live/work in a crappy signal area? Use a lot of bluetooth or wifi?
I uninstalled facebook and twitter and whatever else asks you for your first born child permission wise, and stopped Maps from starting at basically five or six different system-wide events.
Purchase Autostarts from market and see what is running during each system wide event.
tincbtrar said:
What are you synching during the day and at what intervals? Governor and Min Max Speeds? Do you live/work in a crappy signal area? Use a lot of bluetooth or wifi?
I uninstalled facebook and twitter and whatever else asks you for your first born child permission wise, and stopped Maps from starting at basically five or six different system-wide events.
Purchase Autostarts from market and see what is running during each system wide event.
Click to expand...
Click to collapse
everything is stock in terms of intervals, and governor, and cpu speeds.
I travel all over, so my signal strength goes up and and down. But I think you may have hit the problem.
Before flashing (stock) I pretty much always had 4-5 bars wherever. After flashing (s-off, root, etc), I have never had above 2 bars.
Using my home as an example, I normally had 5 bars of service. Now looking at my phone, I have 1.
Internet speeds are fine (250kb/s down 87kb/s up). Phone call quality is the same.
My signal Strength in front of my computer is -77dbm. Outside my front door is -102dbm.
I wasn't getting the battery life i was, so i did flash v9 and i'm back at 1% battery loss while phone is unused. I wasn't getting that with v10 or v 10.5. I could barely get a day between charge. I should get 2 days with v9 because i did before.
songokussm said:
everything is stock in terms of intervals, and governor, and cpu speeds.
I travel all over, so my signal strength goes up and and down. But I think you may have hit the problem.
Before flashing (stock) I pretty much always had 4-5 bars wherever. After flashing (s-off, root, etc), I have never had above 2 bars.
Using my home as an example, I normally had 5 bars of service. Now looking at my phone, I have 1.
Internet speeds are fine (250kb/s down 87kb/s up). Phone call quality is the same.
My signal Strength in front of my computer is -77dbm. Outside my front door is -102dbm.
Click to expand...
Click to collapse
You can try other radios. I understand some have better effects than others with each handset.
Also, I tend to update PRL and such before installing a new ROM using a stock ROM.
I have already tried the two recommended radios. The funny part is 0322 was the radio my phone had before I hacked it.
after flashing each rom you have to program and that updates the PRL anyways.
But just to be sure i did the roaming capabilities, and no change.
Ill try v9 of the kernel. anything else?
Do you have the Facebook app installed?
Sent from my ICS Dinc2
songokussm said:
I have already tried the two recommended radios. The funny part is 0322 was the radio my phone had before I hacked it.
after flashing each rom you have to program and that updates the PRL anyways.
But just to be sure i did the roaming capabilities, and no change.
Ill try v9 of the kernel. anything else?
Click to expand...
Click to collapse
You don't have to program and update prl every time you flash a new rom..
Sent from Kangdemnation
As Condemned said...it isnt necessary. But I live in a fringe area where PRL may prove useful so I do this.
May not be the answer your looking for but try an extended battery. I bought one a week and a half ago for $5.20 from amazon. Its the 2150 mah. And this sucker lasts all day. Using kangdemnation 0.3 with stock aokp kernel oc to 1.5ghz. 13hrs later and at 59% with low usage for 6hrs (work) moderate for an hr and heavy for 3hrs and then back to low for the rest of the time.
Sent from my Incredible 2 using xda app-developers app
cstone1991 said:
Do you have the Facebook app installed?
Sent from my ICS Dinc2
Click to expand...
Click to collapse
Yes, is there a bug with it?
CondemnedSoul said:
You don't have to program and update prl every time you flash a new rom..
Sent from Kangdemnation
Click to expand...
Click to collapse
So far ever time I have flashed a new rom on first boot it gives the "programming required" message.
tincbtrar said:
As Condemned said...it isnt necessary. But I live in a fringe area where PRL may prove useful so I do this.
Click to expand...
Click to collapse
I did it just to see if it helped. It didn't.
densetsu86 said:
May not be the answer your looking for but try an extended battery. I bought one a week and a half ago for $5.20 from amazon. Its the 2150 mah. And this sucker lasts all day. Using kangdemnation 0.3 with stock aokp kernel oc to 1.5ghz. 13hrs later and at 59% with low usage for 6hrs (work) moderate for an hr and heavy for 3hrs and then back to low for the rest of the time.
Sent from my Incredible 2 using xda app-developers app
Click to expand...
Click to collapse
Na, the phone was fine on battery before the hack, from past experiences it's always been even better after. Maybe I'll restock and see if that helps.
Yeah Facebook has been performing poorly on many people's phones especially while on 3g. Sometimes loading very slowly and sometimes not at all. It has also been causing a wake lock problem which I personally experienced that wakes your phone while it should be asleep (not the screen just the os.) That causes battery life to be poor for many users.
I hear that FriendCaster is much better if you want an app to replace the app! Or some are using the mobile site if they don't care about notifications. Personally I just uninstalled Facebook after I started having problems and haven't been on Facebook since.
Try uninstalling the app and see if that helps. It nearly doubled my battery life when I did.
Sent from my ICS Dinc2
cstone1991 said:
Yeah Facebook has been performing poorly on many people's phones especially while on 3g. Sometimes loading very slowly and sometimes not at all. It has also been causing a wake lock problem which I personally experienced that wakes your phone while it should be asleep (not the screen just the os.) That causes battery life to be poor for many users.
I hear that FriendCaster is much better if you want an app to replace the app! Or some are using the mobile site if they don't care about notifications. Personally I just uninstalled Facebook after I started having problems and haven't been on Facebook since.
Try uninstalling the app and see if that helps. It nearly doubled my battery life when I did.
Sent from my ICS Dinc2
Click to expand...
Click to collapse
*Edit* I almost forgot, I did read somewhere that stock roms like andybonestock have fewer problems with Facebook. Also, I read that Facebook has acknowledged the problems, confirmed its on their end, and are currently working on it.
Sent from my ICS Dinc2
cstone1991 said:
Yeah Facebook has been performing poorly on many people's phones especially while on 3g. Sometimes loading very slowly and sometimes not at all. It has also been causing a wake lock problem which I personally experienced that wakes your phone while it should be asleep (not the screen just the os.) That causes battery life to be poor for many users.
I hear that FriendCaster is much better if you want an app to replace the app! Or some are using the mobile site if they don't care about notifications. Personally I just uninstalled Facebook after I started having problems and haven't been on Facebook since.
Try uninstalling the app and see if that helps. It nearly doubled my battery life when I did.
Sent from my ICS Dinc2
Click to expand...
Click to collapse
I got directed by someone on here to "fast for Facebook" in the play store. So far its pretty nice. It has a very refined, nice ICS look to it
Sent from my Incredible 2 using xda app-developers app
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors, and re-calibrating the battery along with these steps may help, may not. But, worth a try anyhow:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM (if installed) or use Rom Manager (is device is supported).
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
Apex_Strider said:
If, after rooting or more likely that case after flashing a new rom, you often have battery reporting errors, and re-calibrating the battery along with these steps may help, may not. But, worth a try anyhow:
1. Take the case off your device (one of the latter steps involves taking the battery out from the phone while it's plugged in. Make sure your case won't stand in the way.)
2. Install Battery Calibration app from the market
3. Plug in your device to charge while it's on, wait till it gets to a 100%
4. When the charge is 100%, open the BatteryCalibration app and lookup what the charge is in MV while at 100%. Write it down.
My Atrix 2 was showing ~3400MV while at 100%, which is definitely not the maximum capacity.
5. Discharge your device completely until it shuts off.
A good way of doing this quickly is by turning on wifi, and a video player.
6. Without turning on the phone plug it into a wall charger and let it get to 100%
7. When it's at 100%, without unplugging it from the wall charger, take off the battery cover, and take the battery out.
Your phone will "reboot" and show a Missing Battery icon.
8. Without unplugging the phone from the wall charger or turning it on, put the battery back in and wait until the phone recognizes the battery.
9. Your battery should now be recognized by the phone, and showing a charge % significantly lower than 100%.
Mine showed only 5%.
10. Let it sit there charging for 2-3 hours (or more).
My phone wouldn't charge past 10%, but yours might. The numbers don't matter much as the phone is definitely getting additional charge that could have been lost while flashing ROMs, etc.
11. After 2-3 hours (or more), turn the phone on while holding the volume down button and get into CWM (if installed) or use Rom Manager (is device is supported).
Do not disconnect it from the charger still!
12. Wipe battery stats in CWM, reboot.
Do not disconnect it from the charger still!
13. When the phone turns on, go into Battery Calibration app again and look up your MV numbers -if you were like me, they should be significantly higher than before. After this whole process I had 4351MV at 100%, comparing to 3400MV before calibration.
Do not disconnect it from the charger still!
14. Before going to sleep - Install Watchdog Task Manager Lite from the market. Go into it's preferences, set CPU threshhold to 20%, check "Include phone processes", check "Monitor phone processes", check "Display all phone processes", set system CPU threshhold to 20% as well.
Do not disconnect it from the charger still!
15. Make sure your wifi and data connections are off. Now finally unplug the phone from the charger.
Go to bed, let your phone sleep too.
16. Success! Next morning check where your battery % is at and if you followed the instructions correctly / got lucky like me, your battery life should be 90% or more.
I went to bed with 98% and woke up to 94%. So, I consider this mission a success.
Sent from my MB865 using xda's premium carrier pigeon service
Click to expand...
Click to collapse
Thank you, this is a great walk through
Sent from my Incredible 2 using xda app-developers app
thanks guys, Ill give it a go.
cstone1991 said:
Yeah Facebook has been performing poorly on many people's phones especially while on 3g. Sometimes loading very slowly and sometimes not at all. It has also been causing a wake lock problem which I personally experienced that wakes your phone while it should be asleep (not the screen just the os.) That causes battery life to be poor for many users.
I hear that FriendCaster is much better if you want an app to replace the app! Or some are using the mobile site if they don't care about notifications. Personally I just uninstalled Facebook after I started having problems and haven't been on Facebook since.
Try uninstalling the app and see if that helps. It nearly doubled my battery life when I did.
Sent from my ICS Dinc2
Click to expand...
Click to collapse
I also support FriendCaster. The facebook app hardly worked when I used it. The only time it half worked was when I was home and on wifi. I actually like what FriendCaster...I like what it does with the layout and I feel it's a lot more intuitive then the official app anyway. Plus for some reason facebook had become a datahog. This could be OPs problem in terms of battery drainage because Im pretty sure they download a lot in the background.
So a few days ago I installed Nova Launcher, got root, changed my dpi to 170, applied the screen off SMS fix, and installed accuweather. I feel like battery life has decreased considerably. I usually don't leave my phone plugged in overnight, but did yesterday. Today, I am down to 81% with 22m on screen time -- at this rate, I would get an hour and a half on a full charge, where I've gotten 3 days and 5 hours of on screen time before when the phone was 100% stock. I had the phone in airplane mode for most of the day, but the battery graph still shows a sharper than usual decline. I just uninstalled accuweather to see if that would help, and will do a complete drain this charge cycle. Anyone else seen something similar to this?
I installed nova launcher prime and my battery life is still amazing. Although I'm not rooted, I wouldn't think that root is the issue. Have you installed an app that has gone rogue and is constantly running? For my part devices that was the problem most of the time. Check your battery stays to see if you can identify which app is exhausting your battery and if you can't, my suggestion is to hard reset to get better results.
One of the great things about the note is the battery life. It would suck to have this advantage become a disadvantage. Good luck
Sent from my SPH-L900 using xda app-developers app
Search for better battery stats here on Xda. You can get the paid app for free (though I recommend purchasing it).
It may help you identify the app, or service eating cycles, or draining your battery.
Did you by chance recently enable Google now?
Or do you have maps reporting/updating your location with GpS radio enabled?
sent from my ginormous Note II
Yes, I experienced something very similar, as did at least one other user in this thread: http://forum.xda-developers.com/showthread.php?t=1977476
My battery suddenly went from being awesome to draining about 1% every 5-10 minutes with no apparent cause, even while sleeping. I wiped and re-flashed, which did not seem to help, then tried an odin re-flash, with still questionable results immediately thereafter. The next day, it seemed to be spontaneously resolved - though, I'm not convinced my battery life is quite as good as some people are reporting.
Interestingly, better battery stats did not show any suspect activity.
I know that's not a solution, but you are definitely not alone. There is something weird going on here. That other user theorized it might be a calibration issue. Seems as plausible to me as anything else. If you are feeling patient, perhaps let it be for a day or two and see if it does indeed spontaneously resolve for you. That would be a helpful data point. If you can't bring yourself to do that, at least keep us updated on what you do and the results.
I have a 2 year old S4 Mini (GT19195), currently running latest stable CM 13.
The phone is working fine except for the occasional (once a week or 2) unexplained battery drain.
With my fairly light daily use, the battery is lasting over 2 days. <And can usually run 4 or more hours screen on.> However, in the last few months, at random times (even with phone asleep - screen off for > 10 min, so presumably in doze), the phone will heat up, and battery will drop 5-10% per minute. After the phone shuts off from dead battery, recharging and restarting the phone will return things to normal, until the next time.
During these episodes, the phone behaved normally, I did not notice any lag on waking up the phone, switching/opening apps, etc. The battery meter page showed no unusual process using the battery (none of the process actually showed any increase in % battery use); except for the battery life dropping off a cliff as I watch. <I noted that the battery usage stat never adds up to 100% even in normal use ... It might show 10% screen, 5% Android, etc, but all that only adds up to 50% or so from full charge to when the battery is near dead.>
Anyone seen this before? Is this a sign of an ailing battery, or something else? Can this be a software problem - like something running away in the background? <Of note is that this happened once when I had completely wiped the phone and had the fresh install of CM 13 + Gapps (micro) ... so if this is software, it would be something in stock Android, rather than a 3rd party app.>
Thanks for reading & responding.
@JohnSoong
This sounds like the processor is stuck on max frequency. Either it is an app(s) playing up or some other process that is keeping the CPU working when it should sleep.
The first thing I would do is install BetterBatteryStats app or something similar to see what is keeping the device awake. You could also try to grab a logcat, but you would need to catch the incident and either plug into a pc with adb or run an app like catlog
JohnSoong said:
I have a 2 year old S4 Mini (GT19195), currently running latest stable CM 13.
The phone is working fine except for the occasional (once a week or 2) unexplained battery drain.
With my fairly light daily use, the battery is lasting over 2 days. <And can usually run 4 or more hours screen on.> However, in the last few months, at random times (even with phone asleep - screen off for > 10 min, so presumably in doze), the phone will heat up, and battery will drop 5-10% per minute. After the phone shuts off from dead battery, recharging and restarting the phone will return things to normal, until the next time.
During these episodes, the phone behaved normally, I did not notice any lag on waking up the phone, switching/opening apps, etc. The battery meter page showed no unusual process using the battery (none of the process actually showed any increase in % battery use); except for the battery life dropping off a cliff as I watch. <I noted that the battery usage stat never adds up to 100% even in normal use ... It might show 10% screen, 5% Android, etc, but all that only adds up to 50% or so from full charge to when the battery is near dead.>
Anyone seen this before? Is this a sign of an ailing battery, or something else? Can this be a software problem - like something running away in the background? <Of note is that this happened once when I had completely wiped the phone and had the fresh install of CM 13 + Gapps (micro) ... so if this is software, it would be something in stock Android, rather than a 3rd party app.>
Thanks for reading & responding.
Click to expand...
Click to collapse
That sounds like an issue I've had for several months, also running CM13 (Official) nightlies & Open GApps micro, unfortunately I've never had the time investigate (well I did once but it worked fine, I couldn't recreate the problem). It is currently happening less than once a week so not a major issue for me.
I've noticed several times that the phone felt hot, I've then used the Trepn profiler app, it would show the web browser running at 30-50% cpu constantly, so stuck as per @noppy22, though not at 100%. I have tried all the major browsers and they have all done it at some point, also most have crashed at some point, which I suspect may be related. Normally just the browser app crashed but yesterday using Chrome the phone FC and rebooted itself. Crashes seem to happen when I touch screen or scroll (though one may not have been when touching). Also XDA app crashed (1st time) when scrolling a couple of weeks ago, so probably not just browser issue on some sites as I thought previously, but might be unrelated. The stock battery meter did not show particularly high battery usage by browsers, though were a little elevated in % terms but hard to tell due to different usage patterns and not checking when things are good! I have noticed a bit of lag, which now makes we run trepn, if it shows high than expected usage by an app I close the app, which fixes it even if I go back to the same web page. This morning I woke up and my phone was off, I put it in my night-time profile (wifi & data off) that normally only uses a few % overnight but last night it must have used more than 30% of battery that was left, first time this has happened.
The other thing to consider is how good is your battery? At 2yrs old it could be tired if it's had a hard life (though yours maybe not) or you have allowed it to get very hot eg I did one trip using gps nav with phone mounted in windscreen cradle driving direct into the Aussie sun when my battery was about 2.5yrs old, thinking back I now think this was when I first noticed my battery was really dropping of quickly when around ~40% charge (though it was faster with more charge remaining also than my new battery, I would say), so think I the high temp the phone got to that day affected the battery. I think 4hrs of screen on time may be marginal, I was only getting about 3 to 3.5 when my battery dropped off fast, my new battery is giving me 6hrs SOT (mostly using browser app), so possibly you just need a new battery as only one other user has reported high cpu usage like I have.
Battery stats not adding up to 100% is normal.
I've just installed BetterBatteryStats, so I'll give it a week of so and see if it catches anything. So far nothing unusual in the stats.
I am leaning towards this being a hardware issue, likely the battery. Since the phone responded fairly normally during the overheat & battery drain episodes, this does not seem to me an app taking over the CPU. If the CPU was occupied by an app, shouldn't everything else be slowed down?
I have so far noticed no particular pattern to these episodes, and I cannot reproduce it at will. It is infrequent enough for now that I can live with it (although an unexpected dead battery is annoying.) I will see if the monitoring app pick up anything.
Hey guys,
Maybe you have to try to flash your stock or custom kernel again.
Thats probably the problem.
Xheers
When I got mine a few years ago the media process kept getting stuck and overheating/draining my phone and even a reboot wouldnt fix it. I found out because I was using the system panel app and monitoring cpu of system processes. I ditched and deleted the gallery app (it was trying to create thumbnails for 100+gb of photos and videos) for quick pic v.4.5.2 on every phone I've used ever since and haven't look back.