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There's been mixed reviews of battery life in the CM7 rom for the NT as far as battery life is concerned, some are saying they've run it with moderate use since the day it was released and only used about 20 - 30% so far while others are saying battery life is terrible.
SO I thought I'd start a little poll to see what people are getting, I'm guess the battery drain is due to various software being installed so not really the OS's fault.
For me the Battery life is greatly improved over stock, for instance I took it of charge 10 hours ago, it's admittedly only been used for a few minute son and of during those 10 hours but it's lost the grand total of 4% battery in those 10 hours which I consider pretty good really.
Soi lets here what everyone thinks, remember to vote !
Battery life - improved
This is my third day on the CM7 alpha - battery life has been much better than before. Considering I have probably spent more time with the NT turned on over the last couple of days than I normally would, the battery used is less than normal. Previously I would use about 60% of my battery per day. Now I am using 30%-40% - and that includes downloading and configuring many, many applications.
I really think its much better than stock in my cm7 nt
No problems here. Take off charge around 6am and return to charge around 10pm with usually more than 80% left depending on usage.
Sent from my Droid Incredible ICS 4.0.3
I don't think mine has been on a charger for the last 16 hours or so, light usage, wireless has been off most of the time, and I use a task killer to kill things before I turn off the screen. Didn't power off, just put to sleep last night before bed, it's still at like 85%.
So far, it seems better than stock battery life to me, or at least no worse, and I have a lot more apps installed now.
Edit: Internal version.
It might help if folks said if they were running off SD card or internal memory when looking at battery life - I have the impression that the SD card reader on the NT is something of a battery vampire.
Internal CM7 since it was released.
Live wallpaper on Golauncher
wifi set to screen off-off
Brightness at about 60-65%
It's been off of charge for 4 hours 21 minutes this morning and I'm at 96%
Dolphin HD and Gmail have been running all that time.
Hasn't been out for long enough to really tell but my impression is that it's about the same as stock.
screen.
10char
dang69 said:
screen.
10char
Click to expand...
Click to collapse
Odd. Is that your aforementioned case with lots of standby? On my Vibrant, the Screen bar generally dwarfs all other bars even with significant standby time. Granted that's an apples-to-oranges comparison... (I don't have CM7 on my Nook Tablet yet - can't do a comparison between stock B&N and my Vibrant at the moment.)
PlacidCat said:
Odd. Is that your aforementioned case with lots of standby? On my Vibrant, the Screen bar generally dwarfs all other bars even with significant standby time. Granted that's an apples-to-oranges comparison... (I don't have CM7 on my Nook Tablet yet - can't do a comparison between stock B&N and my Vibrant at the moment.)
Click to expand...
Click to collapse
Yes. I don't really know what "standby" means. This use was about 40 minutes of checking email, weather news and etc followed by About 2 hours with the screen off then an hour of dinking around. Watched all the superbowl commercials, staying up on XDA and other forums with Tapatalk and learning things in CM7. I'd describe this as light use bordering on moderate.
dang69 said:
Yes. I don't really know what "standby" means. This use was about 40 minutes of checking email, weather news and etc followed by About 2 hours with the screen off then an hour of dinking around. Watched all the superbowl commercials, staying up on XDA and other forums with Tapatalk and learning things in CM7. I'd describe this as light use bordering on moderate.
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Click to collapse
Watching video or playing games can be quite intensive. Flash is probably the most intensive for video playing.
Keep a good eye in it over the next few days then cone back and post if you've noticed anything that makes it better or worse with battery life
Last I checked mine was going on 18 hours and at about 40%
One thing I noticed is that the charger for my Moto phone doesn't seem to charge the nook as well as the nook charger. I'll have to look at the nook wall wart and see if it's pumping out more juice. For reference the Moto charger is only 4.33W (5.1V at 850mA).
The nook charger is a 1.8amp charger
CelticWebSolutions said:
Watching video or playing games can be quite intensive. Flash is probably the most intensive for video playing.
Keep a good eye in it over the next few days then cone back and post if you've noticed anything that makes it better or worse with battery life
Click to expand...
Click to collapse
Will do.
10char
RadicalAns said:
Last I checked mine was going on 18 hours and at about 40%
One thing I noticed is that the charger for my Moto phone doesn't seem to charge the nook as well as the nook charger. I'll have to look at the nook wall wart and see if it's pumping out more juice. For reference the Moto charger is only 4.33W (5.1V at 850mA).
Click to expand...
Click to collapse
What kind of usage? Low, high, moderate? Just curious because my wife and I do a decent amount of Netflix (1-2 hours a day) and I don't have to charge more than every 3 days. This is with 1.4.0 rooted. I've been exceptionally pleased with that - power consumption in standby seems to be incredibly miserly with stock (most likely due to WiFi being turned off when the system is in standby).
Montisaquadeis said:
The nook charger is a 1.8amp charger
Click to expand...
Click to collapse
Ahh. That explains a lot. Looks like I should pack that in my bag rather than my Moto charger. I wonder if it'll charge my phone faster?
On the subject of the battery, I posted about an issue I encountered last night, here:
http://forum.xda-developers.com/showthread.php?p=22261812
Additional information: At the time, I was fooling around with a playstation emulator, which i'm fairly sure constitutes a heavy drain on system resources. Battery drain seemed appropriate for the level of activity.
Sent from my SAMSUNG-SGH-I997 using Tapatalk
Internal install, wifi off during sleep. Figure the end of the graph was about 19-20 hours or so of sleep. Before that was a constant internet, twitter, WWF session. Screen brightness is in the bottom 1/3rd of the slider.
I am going to beat the hell out of it tonight and will see how the battery holds up. Looks pretty solid just sleeping, so we will see what it can do under load.
So found that if your wireless location is turned on, it will wake your NT about every 5 minuetes. That's not a good thing
If anyone is seeing drains, i suggest using betterbatterystats to help track down the culprit.
10 char this
So Im getting horrible battery life with this now. Not really sure whats going on. I use to be able to leave my nook on standby for days and last night it was at about 30% woke up this morning and it was completely dead...
Has anyone else ever had their battery improve over time?
My stock battery has overnight gotten amazingly better, and I can't explain it. Its on a stock amaze, everything stock, I was having some battery issues, it would charge and get to 99% then take a good 20-25 mins to get to 100%, so I got a battery calibrator off the market, a non root required one. So I get it charged, and 'calibrate' it, and I didn't think it would do anything. So it stayed at 100% for over an hour with the screen on. At night it was reading 70%, and I left it without charging, and in the morning was dead. Right away I thought the battery calibrator threw it off, so I charged it up agaon to 100%, and this time wanted it to drain to zero, and I thought I'd start over from a drained battery. Same thing happened when I had it at 100%, it would take forever to drain it, I was playing movies on it, sound turned up, screen full brightness, and the thing wouldn't drain. I had a movie looped all night, and for a period of 10 hrs of this, it was still going when I woke up! I find it hard to believe that this is legit, but I've tried it twice now to drain the battery and I'll wake up and it'll be at roughly 15% remaining.
The other odd thing I noticed is on my data tracker, I had about 80MB of data go through the phone that I can't recall doing anything with. It was at a time I was at home and on wifi, so I can't call telus and see what went through the network, but the phone had something big go through it that I didn't do. Maybe telus is secretly fixing the battery issue on these phones? The conspiracy continues…
Just thought I'd share. I attached a pic of the battery status as of today. I haven't charged this thing in over a day other then a little bump. Before, I'd get to 18-20 hrs of regular use and it would need a charge.
I've also got another amaze running energy rom, and faux and its been doing way better then the rooted amaze.
Hmmmm anyone with knowledge about battery life wanna chin in?
What's the name of the app, Guy?
Sent from my HTC_Amaze_4G using XDA App
battery calibration, developed by 'professionals'
I uninstalled it, I had it on my phone for 20 minutes
This is my battery life.
AOKP + Lean
Sent from my Galaxy Nexus using Tapatalk
andy55 said:
Has anyone else ever had their battery improve over time?
My stock battery has overnight gotten amazingly better, and I can't explain it. Its on a stock amaze, everything stock, I was having some battery issues, it would charge and get to 99% then take a good 20-25 mins to get to 100%, so I got a battery calibrator off the market, a non root required one. So I get it charged, and 'calibrate' it, and I didn't think it would do anything. So it stayed at 100% for over an hour with the screen on. At night it was reading 70%, and I left it without charging, and in the morning was dead. Right away I thought the battery calibrator threw it off, so I charged it up agaon to 100%, and this time wanted it to drain to zero, and I thought I'd start over from a drained battery. Same thing happened when I had it at 100%, it would take forever to drain it, I was playing movies on it, sound turned up, screen full brightness, and the thing wouldn't drain. I had a movie looped all night, and for a period of 10 hrs of this, it was still going when I woke up! I find it hard to believe that this is legit, but I've tried it twice now to drain the battery and I'll wake up and it'll be at roughly 15% remaining.
The other odd thing I noticed is on my data tracker, I had about 80MB of data go through the phone that I can't recall doing anything with. It was at a time I was at home and on wifi, so I can't call telus and see what went through the network, but the phone had something big go through it that I didn't do. Maybe telus is secretly fixing the battery issue on these phones? The conspiracy continues…
Just thought I'd share. I attached a pic of the battery status as of today. I haven't charged this thing in over a day other then a little bump. Before, I'd get to 18-20 hrs of regular use and it would need a charge.
I've also got another amaze running energy rom, and faux and its been doing way better then the rooted amaze.
Click to expand...
Click to collapse
WOW @ THIS SCREENSHOT
Sent from my Energized HTC Amaze 4G using xda-premium
I could only get about 8 hours MAX with intermediate use =[ tried every rom & kernel
Sent from my HTC_Amaze_4G using XDA App
fuego77 said:
I could only get about 8 hours MAX with intermediate use =[ tried every rom & kernel
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
Same Nexus s 14h, not a galaxy nexus though.
Sent from my Galaxy Nexus using Tapatalk
bendirkss said:
Same Nexus s 14h, not a galaxy nexus though.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
My brother has a galaxy s2 and gets about 18+ with intermediate use and 29 hours with low usage.... I get about 10 with low usage. It drives me crazy man!!!!
Sent from my HTC Amaze 4G using XDA App
andy55 said:
Has anyone else ever had their battery improve over time?
My stock battery has overnight gotten amazingly better, and I can't explain it. Its on a stock amaze, everything stock, I was having some battery issues, it would charge and get to 99% then take a good 20-25 mins to get to 100%, so I got a battery calibrator off the market, a non root required one. So I get it charged, and 'calibrate' it, and I didn't think it would do anything. So it stayed at 100% for over an hour with the screen on. At night it was reading 70%, and I left it without charging, and in the morning was dead. Right away I thought the battery calibrator threw it off, so I charged it up agaon to 100%, and this time wanted it to drain to zero, and I thought I'd start over from a drained battery. Same thing happened when I had it at 100%, it would take forever to drain it, I was playing movies on it, sound turned up, screen full brightness, and the thing wouldn't drain. I had a movie looped all night, and for a period of 10 hrs of this, it was still going when I woke up! I find it hard to believe that this is legit, but I've tried it twice now to drain the battery and I'll wake up and it'll be at roughly 15% remaining.
The other odd thing I noticed is on my data tracker, I had about 80MB of data go through the phone that I can't recall doing anything with. It was at a time I was at home and on wifi, so I can't call telus and see what went through the network, but the phone had something big go through it that I didn't do. Maybe telus is secretly fixing the battery issue on these phones? The conspiracy continues…
Just thought I'd share. I attached a pic of the battery status as of today. I haven't charged this thing in over a day other then a little bump. Before, I'd get to 18-20 hrs of regular use and it would need a charge.
I've also got another amaze running energy rom, and faux and its been doing way better then the rooted amaze.
Click to expand...
Click to collapse
This picture tells nothing about battery usage/life. It just makes noobs wow.
fuego77 said:
My brother has a galaxy s2 and gets about 18+ with intermediate use and 29 hours with low usage.... I get about 10 with low usage. It drives me crazy man!!!!
Sent from my HTC Amaze 4G using XDA App
Click to expand...
Click to collapse
Me to! I can't even get 10. Its fine asleep but once its on I watch it go doooown.
Sent from my Galaxy Nexus using Tapatalk
I get 8-12 hours depending on my use from moderate to heavy. I usually hook it up to a charger though if I am watching a flick or streaming music, unless working out, lol!
My mytouch4G I got between 12-14 hours, so not drastically different. I Just deal with it.
Sent from my HTC_Amaze_4G using Tapatalk
Hmmm, sensation gave me much worse battery life, currently using energy ROM sense 3.0. I get about 12 hrs per day average use, data constantly on (unlimited), min 1 hr talk, few min of Twitter and responding to e-mails, checking stock. I plug it into my car charger for 10-30 min but it doesn't change that much.
Sent from my HTC_Amaze_4G using XDA App
So I just woke up, been on my phone for ten minutes, checking emails , checking Twitter and on xda
My phones on 89%
The only thing I have syncing is my gmail account (contacts & calendar) and facebook (contacts and calendar)
Sent from my HTC Amaze 4G using XDA App
Been on my phone looking at forums and taking pics for 1h22m and I'm at 67%
Sent from my HTC_Amaze_4G using XDA App
Ha keep checking this hoping someone else tried the the op has done and see if there's been any improvement... My battery life seems decent enough and I know to bring my charger if I'm going to be using it a lot and out all day.
Sent from my HTC Amaze 4G using XDA App
Bdix said:
Been on my phone looking at forums and taking pics for 1h22m and I'm at 67%
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
Taking pictures uses a LOT of battery life i have noticed, especially when using flash.
The Screen was barely on and awake time is minimal as well. Everyone just says "Wow" when they see a day, but a day of barely using your phone is not a special thing to accomplish.
Truth when I spend all day at my job I can't use my phone, even with syncing on... I'll still have 70+ % after 14 hours or so...
Sent from my HTC Amaze 4G using XDA App
isaster1 said:
the screen was barely on and awake time is minimal as well. Everyone just says "wow" when they see a day, but a day of barely using your phone is not a special thing to accomplish.
Click to expand...
Click to collapse
+1000000000000
So is this thread supposed to be based on a purely stock experience? I have yet to get less than 14 hours with the heaviest usage.. but then again I am not stock. But every rom I have used has given me at LEAST a 12 hour battery life, even if I am trying to kill it.
I realize from numerous threads that wiping battery stats doesn't really do anything, but even though my battery goes to 90% super quick(I wish I knew why, it hasn't always) I still usually get 18+ from my phone, with realistic usage.
If this thread IS just for people using stock.. why are you using stock? I am on bulletproof 2.5 with the latest kernel, and I get great battery life, with over 130 apps installed and regular use.
A random thought, on previous devices I disabled automatic time sync and saw a big difference. I did the same for the amaze since day 1.. maybe you should disable it too? After you synced to the server, what point is there to auto-time?
My 2 cents.. don't know what the complaining it about.
On light usage, I EASILY get 2+ days on one charge..
I've heard several different opinions on this. Condition or not to Condition the battery.
Do we need to condition this thing?
How are you doing it?
What kind of results are you getting?
Thanks in advance.
Matt
Li-ion
The battery is lithium Ion so you really shouldn't have to from my understanding.
People do even tho is not necessary, for some reason I don't but after a few day battery has gotten better
Sent from my SGH-T999 using Tapatalk 2
I mentioned this earlier -- I know it's a li ion that shouldn't need conditioning but when I first got mine my battery life was absolutely horrible. I went through two full discharge/recharge cycles and it seems to be much better now.
Currently 11 hours on battery, 50 minutes screen on, played a couple of games, downloaded a couple of apps, 15 minutes of voice calls, and battery is at 80%.
The way it was when I first got it, I'd probably be at 40 or 50% right now, if not even lower.
I'm also running juice defender and have stopped using the gmail app because you can't set the sync interval on it. Instead I've been using the built in email app and have it set to sync every 30 minutes. Not sure if any of this is doing anything but my battery life is definitely better than when I first got the phone. At first it was so bad that I came very close to just returning the phone.
BonesHopkins said:
I mentioned this earlier -- I know it's a li ion that shouldn't need conditioning but when I first got mine my battery life was absolutely horrible. I went through two full discharge/recharge cycles and it seems to be much better now.
Currently 11 hours on battery, 50 minutes screen on, played a couple of games, downloaded a couple of apps, 15 minutes of voice calls, and battery is at 80%.
The way it was when I first got it, I'd probably be at 40 or 50% right now, if not even lower.
I'm also running juice defender and have stopped using the gmail app because you can't set the sync interval on it. Instead I've been using the built in email app and have it set to sync every 30 minutes. Not sure if any of this is doing anything but my battery life is definitely better than when I first got the phone. At first it was so bad that I came very close to just returning the phone.
Click to expand...
Click to collapse
That's true for me as well now that you mentioned it. First day, I got about 4 1/2 hours with it before i was down to 10%. I was shocked! Each day it has gotten a little better. Over the last 36 hours it has last a full days before a charge. It doesn't really make much sense to me that they are li-ion which shouldn't need conditioned but it seems that we do need to do this. A friend suggested I condition it when I got it and before I started heavily using it, I guess he was right.
Li-ion batteries don't need conditioned. Any signs of conditioning you see may be some sort of conditioning/learning of the OS.
Sent from my SPH-L710 using Tapatalk 2
mlin said:
Li-ion batteries don't need conditioned. Any signs of conditioning you see may be some sort of conditioning/learning of the OS.
Sent from my SPH-L710 using Tapatalk 2
Click to expand...
Click to collapse
What he said.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
BonesHopkins said:
Currently 11 hours on battery, 50 minutes screen on, played a couple of games, downloaded a couple of apps, 15 minutes of voice calls, and battery is at 80%.
Click to expand...
Click to collapse
See this kinda stuff freaks me out. I had one decent charge so far, had the phone a week, have been doing full discharge/charge the whole time. Sitting at 38% right now on 16 hours, about half of that was asleep with power save on (its been dropping 20-30% overnight) and only 48 minutes screen time. I dunno how long it should take to improve but it seems like its not taking this long for anyone else.
erikk said:
What he said.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
Click to expand...
Click to collapse
What they said.
This is a very informative site. I've quoted it's recommendations concerning the circuit in the battery that needs calibration before......
here's the link to that page there.....
http://batteryuniversity.com/learn/article/battery_calibration
codo27 said:
See this kinda stuff freaks me out. I had one decent charge so far, had the phone a week, have been doing full discharge/charge the whole time. Sitting at 38% right now on 16 hours, about half of that was asleep with power save on (its been dropping 20-30% overnight) and only 48 minutes screen time. I dunno how long it should take to improve but it seems like its not taking this long for anyone else.
Click to expand...
Click to collapse
How long do you usually sleep for???
Seriously though, 20 - 30% overnight sounds like a lot. I tested mine and it dropped about 8% in roughly 7 hours of zero use while I was sleeping. I think even that is a little excessive but I can live with it.
Have you tried running something like Juice Defender? It seems to have made a difference with mine. When I got my S3 last week it was about the same as yours. I did a couple of complete discharge/charge cycles, installed juice defender, and have been going into the task manager and app manager and turning off all the crap that doesn't turn off automatically. It has made a difference.
Oh, and I also did the APN trick to disable LTE. Not sure if that has made any difference but with everything combined the battery seems to be doing a lot better than it was at first.
Don't "they" say that you should not use task managers as they don't work well with the phones? I'm no expert here, so don't quote me, but my understanding is that the One S and Siii owe a lot of their excellent battery lives to their own internal task managing.
Correct me if I'm wrong here.
ickster said:
Don't "they" say that you should not use task managers as they don't work well with the phones? I'm no expert here, so don't quote me, but my understanding is that the One S and Siii owe a lot of their excellent battery lives to their own internal task managing.
Correct me if I'm wrong here.
Click to expand...
Click to collapse
The internal task managing is the reason you shouldn't use 3rd part task managers. That's the whole point. Android has done this since 2.0
Having said that, there's nothing inherently wrong with killing a task that is misbehaving... most things that say not to use task managers really mean to not (a) turn on auto task-killing, or (b) kill tasks across the board, albeit manually, under the false impression that freeing up RAM is a good thing.
When you guys say full discharge do you mean draining the battery till it shuts off or going down to 10%, I was under the impression that fully discharging would harm the battery.
MCKang25 said:
When you guys say full discharge do you mean draining the battery till it shuts off or going down to 10%, I was under the impression that fully discharging would harm the battery.
Click to expand...
Click to collapse
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
BonesHopkins said:
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
Click to expand...
Click to collapse
Doing this enough times has the potential to damage your battery. Leaving it at 2% - 5% will not make a difference in the "calibration" compared to completely killing the battery.
Killing the battery may work for you, but I want others to be aware of the potential of damaging the battery.
Just my 2cents for the day.
Here. Is a link to battery charging for Li-ion. I have another site that is great in explaining these things. I have a couple of R/C trucks and this info is great to know and have. The same applies. To our phones charge rates. I would hope that when a dev makes up or mods a kernel that they have a basic knowledge of charge rates and the rest of the equations. Foe our batteries this is literally. Life and death. It could also cause a phone to burst into flames. Especially. If we use after market batteries that have poor protection circuitry in them.
I will find the other link later and post it up here to give a possible better understanding of these things. But, try not to rely on me as I tend to forget things a lot. Car accidents will do that to you when you crush your skull. Any way, GIYF.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Sent from my Xoom using XDA
You basically only need to do the "calibration" once. And the phone has limits set that will neither undercharge nor overcharge them.
edit I think heat is your batteries worst enemy.
BonesHopkins said:
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
Click to expand...
Click to collapse
This is the WORST thing you can do to a Li-Ion battery. I mean literally you can lose 10% of its life from doing this or even cause the battery to stop charging at all.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Li-ion should never be discharged too low, and there are several safeguards to prevent this from happening. The equipment cuts off when the battery discharges to about 3.0V/cell, stopping the current flow. If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible. To prevent a battery from falling asleep, apply a partial charge before a long storage period.
Click to expand...
Click to collapse
Seriously everyone should spend a couple hours on that site at some point. Half the information will probably be way over your head (or at least it was mine) but there's enough good information that even half of it is definitely worth learning.
Here is the other site that I was talking about. Though it is for R/C battery packs it should still grant a measure of understanding to the workings of these batteries.
http://www.rchelicopterfun.com/rc-lipo-batteries.html
Sent from my Xoom using XDA
BonesHopkins said:
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
Click to expand...
Click to collapse
Take into account though. These batteries have circuitry. Built into them to prevent you from truly discharging. It all the way. That doesn't mean that it can not discharge all the way. Things like humidity can play its roll in taking a Li-ion or Lipo battery past the kill zone point. If you know that you will not be using the battery for a good period of time or it is strictly an in case of an emergency battery. Place it into a plastic bag and suck out all of the air that you can and seal it. A zip lock bag works best. Place it in the refrigerator or freezer. There is very little moisture. In there. And what ever moisture makes its way in when you open the fridge. Or freezer will not have time to get into the zip lock bag. The lack of moisture slows the discharge process down especially in the summer. Also the chilling of the battery's chemical. Compounds slows the molecular interactions down. Its a helpful two fold process.
Sent from my Xoom using XDA
I've been through several threads regarding battery drain/poor battery life/no charging/etc. But I have not found any with my same problem.
When I turn my phone off and attempt to charge it a battery icon pops up and disappears. If I try to turn on the screen again nothing happens, when I unplug it from the charger I have to hold down the power button (essentially do a hard reset) to get it to respond to any external input.
Additionally the battery life is not great (I get about 3 1/2 hours of screen time) Just bought a 2700mah anker. And the back of the case can get pretty hot, so much so I can feel it on my leg from my pants pocket.
Anybody have any clue as to whats going on? Or point me in the right direction. Before I try to improve battery life, I just want to make sure my phone is acting as it should.
A little more info:
The hot battery/poor battery life was present before i did anything to the phone.
I am rooted
Running h0tw1r3's CM9 rom
I bought the phone last week off some guy on craigslist, it came in a refurbished box that had a sticker saying 5/31/12 or something.
Thanks in Advance.
This is a known CM9 issue. One that scares me entirely. But once it is turned off, it will flash the charging icon and just go black. I do not know if it charges or not. You may want to try to turn it off (taking note of the battery) and plug it in for 10 to fifteen minutes, turn it on through CWM and see if the battery improved at all. I tried it on a CM9 derivative and it seemed to work. Give it a shot before running the battery dead.
PS. This phone runs hot unfortunately :/ May want try undervolting to get the heat down a bit. (GB rom only)
---------- Post added at 09:40 PM ---------- Previous post was at 09:28 PM ----------
http://forum.xda-developers.com/showthread.php?p=27562625&highlight=no+charge+off#post27562625
Mentioned a bit here
Happened to me today. Pull battery. Press power button two or three times. Put back in battery. Plug it up and leave it for 5min. Unplug. Pull battery. Press power button two or three times. Put the battery back and it should start up.
Ph0n3D0rk said:
This is a known CM9 issue. One that scares me entirely. But once it is turned off, it will flash the charging icon and just go black. I do not know if it charges or not. You may want to try to turn it off (taking note of the battery) and plug it in for 10 to fifteen minutes, turn it on through CWM and see if the battery improved at all. I tried it on a CM9 derivative and it seemed to work. Give it a shot before running the battery dead.
PS. This phone runs hot unfortunately :/ May want try undervolting to get the heat down a bit. (GB rom only)
---------- Post added at 09:40 PM ---------- Previous post was at 09:28 PM ----------
http://forum.xda-developers.com/showthread.php?p=27562625&highlight=no+charge+off#post27562625
Mentioned a bit here
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well i will give the battery life tricks a go i suppose. thanks for pointing to the CM9 issue. I will look into that.
Note: I have since fully charged my new anker battery and have 16.5 min of screen time and 2h18min of time since disconnected. I am at 86% wifi & gps on and backlight all the way low. this is no where near what I would expect. fellow xda'ers please advise, thanks.
http://forum.xda-developers.com/showthread.php?t=1744091
People either report the most amazing battery life or the worst they have ever seen. I believe it dependsupon a number of factors but hopefully some of the people reporting a good life span in this thread will be able to shed light on your drainage issue.
theniusofg said:
well i will give the battery life tricks a go i suppose. thanks for pointing to the CM9 issue. I will look into that.
Note: I have since fully charged my new anker battery and have 16.5 min of screen time and 2h18min of time since disconnected. I am at 86% wifi & gps on and backlight all the way low. this is no where near what I would expect. fellow xda'ers please advise, thanks.
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Seems to me that the Anker batteries are hit or miss. If anything, they're probably not actually 2700 mah, and rather 2500 or less. I would go back to your stock battery as your primary.
That being said, do you have apps set to sync often? Because I usually get about 4 hours of screen on time, 16 total on a charge, so I could see the half hour less screen time being attributed to sync. Also, grab CPU spy from the market to see if your phone is going into deep sleep with the screen off. You could be having some rogue app keeping your phone in a wakelock.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
If you want help, you need to provide more details. I have 2 notes, since may. Neither have over heating issues. One is fully stock, the other I have tinkered with quite a bit.
If your battery is getting hot, you probably have a rogue app. I don't know if a battery Cal works on this phone, wouldn't hurt to look into it.
Fully charge your battery and let it take it's course. Before recharging, take a screen shot and post it here.
Sent from the past from my touch screen commodore 64.
Am I the only one that is like Wow. 3 and a 1/2 on screen time, thats great! lol. I get 2 1/2 mostly because all of the on screen time is using internet the whole time, no music, no games, no reading books or anything, just constant internet usage from apps that require internet. Im sure i could get a lot more playing a video or a game.
Guys,
thanks for (most of) the comments. I believe the battery life issues were due to me not using the official charger. I'm monitoring it with BMW and a few terminal commands. Will keep you all posted when the results are in.
When draining the battery down using splash top viewing a video I got upwards of 5hrs of screen time on wifi . But I was plugged in intermittently so I have to another drain to 'calibrate' BMW pro (at the expense of battery life). Stay tuned.
Here are my results today. This is 90 percent lte throughout the day at work. Is it what my atrix got? No. But I would never expect that with so much more screen, plus, atrix wasn't lte. I'm on meso-remix with Tsf launcher. Was on trebuchet before today.
SGH-i717 mesosphere-remix
theniusofg said:
Guys,
thanks for (most of) the comments. I believe the battery life issues were due to me not using the official charger. I'm monitoring it with BMW and a few terminal commands. Will keep you all posted when the results are in.
When draining the battery down using splash top viewing a video I got upwards of 5hrs of screen time on wifi . But I was plugged in intermittently so I have to another drain to 'calibrate' BMW pro (at the expense of battery life). Stay tuned.
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Also, I think when cm9 based roms completely die, they take some effort to reboot, at least mine does and I've seen other odd reports of charging while off behaving oddly. Usually have to boot cwm then reboot, else it just vibrates and does nothing.
I think the key to battery life is trying to stay on wifi as much as possible because lte sucks down juice.
Screen of old hotwire build battery life-
All on wifi, no tweaks. Maybe few minutes off wifi.
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
Moved To Q&A
Please post in the correct section
Mine did same thing after installing paranoid Rom, even Samsung charger won't boot it up.
I bought external charger, and charged battery alone by itself, and after an hour, all was good to go.
I guess it's just battery needed boost like someone car battery...lol.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Get an app like better battery stats and check for wake locks. My wife's skyrocket would die in 3 hrs of use. Turned out the email kept the phone fully awake the whole time. Swapped out her email to Samsung's and no more wake lock. The battery gauge in settings doesn't show the truly useful information. Through XDA that app is free.
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Nvm my post
Sent from my SAMSUNG-SGH-I717 using Tapatalk 2
My Galaxy S II (and pretty much any Android evice I've picked up) has a usable battery life of 45 minutes. I unplug the phone at 9 A.M. in the morning after charging it to 100%. By 12 in the afternoon I would have browsed the Internet, checked social apps and played a few rounds of a game for what feels like 45 minutes in total. By then the battery is at 30% and I have to put it away in fear of it dying before I get home. The phone is useless for the rest of the day. My iPhone 4 with its 3 year old battery lasts 2 days like this.
No wakelocks, 99% deep sleep. I have a 3200mAh battery which feels like it lasts 1.5 hours before I have to put it away in fear. Basically the phone is not usable at all due to the user being in constant fear of the battery dying.
If I don't use the phone at all it's down to 20% by the end of the day with no wakelocks and 99% deep sleep. If I don't use my iPhone 4 with its 3 year old battery, it still lasts 20 days.
KurianOfBorg said:
My Galaxy S II (and pretty much any Android evice I've picked up) has a usable battery life of 45 minutes. I unplug the phone at 9 A.M. in the morning after charging it to 100%. By 12 in the afternoon I would have browsed the Internet, checked social apps and played a few rounds of a game for what feels like 45 minutes in total. By then the battery is at 30% and I have to put it away in fear of it dying before I get home. The phone is useless for the rest of the day. My iPhone 4 with its 3 year old battery lasts 2 days like this.
No wakelocks, 99% deep sleep. I have a 3200mAh battery which feels like it lasts 1.5 hours before I have to put it away in fear.
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Well, or you buy a new battery for the S2 or you keep going with your "stylish" i phone. The world is not complicated and phones are not rocket science.
And by the way, games drain battery hard, very hard.
Charge at work, upgrade the battery or stick with your iPhone.
I tip my hat to you and wish you a good day.
Sent from my GT-I9100 using xda premium
Mine lasts up to 2-3 days with little usage.
Sent from...this is not even my S2
Edvin73 said:
Well, or you buy a new battery for the S2 or you keep going with your "stylish" i phone. The world is not complicated and phones are not rocket science.
And by the way, games drain battery hard, very hard.
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Like I stated, I have a newish 3200mAh battery which is safe to use for 1.5 hours before you have to put the phone away so it lasts the rest of the day.
KurianOfBorg said:
Like I stated, I have a newish 3200mAh battery which is safe to use for 1.5 hours before you have to put the phone away so it lasts the rest of the day.
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I hope you checked with BBS, if so and as you said "99% of deep sleep", it means that the games are draining your battery.Well, sometimes even a "newish" battery can be faulty.Try with different battery,I mean a good one for sure.And if your results are the same, stop playing those freakin' games.
mckeowngoo said:
Charge at work, upgrade the battery or stick with your iPhone.
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I do. The battery actually drains while charging if I'm using the phone.
Edvin73 said:
I hope you checked with BBS, if so and as you said "99% of deep sleep", it means that the games are draining your battery.Well, sometimes even a "newish" battery can be faulty.Try with different battery,I mean a good one for sure.And if your results are the same, stop playing those freakin' games.
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Yes I use BBS and have completely disabled all bloatware using Autostarts. I have the original battery and the Mugen Power 3200mAh battery. The battery life is proportional to with the capacity of the batteries I've used.
The primary use of my phone is mobile gaming. I don't care about the phone part except for receiving push notifications for email, IMs etc. which I then reply to on the PC anyway.
My SG2 and pretty much every Android device I pick up has 45 minutes of battery... Either you have won the lottery and got a defect phone several times or there is something fishy going on..
My sg3 lasted for 24 hours, my s4 last for a couple of days, my motorola razr lasted a week and my iphone 4 went for a day and sometimes 24 hours..
Even if I stress test my sg4 and s3 all the time it would last for a lot loooonger than 45 minutes..
I know the games will use a lot of juice but 45 minutes? Something is wrong...
What kind of games are we talking about? I do not play so much myself, just online poker, some tetris and so on, my iphone and android phones is pretty similar when talking about these games...
You could go for a Nintendo Game Boy etc
That said I taught ICS used less battery than JB. And it's pretty weird if you have the mugen battery. My Razer had a 3300 battery and that would go for days, even with heavy usage.
Sent from my Samsung Mobile and xda-Premium...
mr.lysgaard said:
My SG2 and pretty much every Android device I pick up has 45 minutes of battery... Either you have won the lottery and got a defect phone several times or there is something fishy going on..
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I've extensively used the Galaxy S, Galaxy S II, Galaxy Note, Nexus One, Nexus S. All of them can be used heavily (3G, gaming) for just 45-60 minutes before the battery is low and you have to save it for the rest of the day.
Simply listening to music for 2 hours in the gym drains 35% battery! WTF? This is without any equaliser and while using an external headphone amplifier. I could listen to music for 2-3 hours a day for 1 week on my old iPod touch before needing to charge it.
mr.lysgaard said:
What kind of games are we talking about?
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I'm currently grinding in Punch Quest.
mr.lysgaard said:
You could go for a Nintendo Game Boy etc
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Those currently suck. No more AAA games like the PSP had.
mr.lysgaard said:
That said I taught ICS used less battery than JB. And it's pretty weird if you have the mugen battery. My Razer had a 3300 battery and that would go for days, even with heavy usage.
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With zero usage and I mean barely switching on the screen once or twice to check the time, my 3200mAh Mugen battery is at 55% by evening. No wakelock, full deep sleep. The original battery will be below 20% or dead with zero usage.
KurianOfBorg said:
With zero usage and I mean barely switching on the screen once or twice to check the time, my 3200mAh Mugen battery is at 55% by evening. No wakelock, full deep sleep. The original battery will be below 20% or dead with zero usage.
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Maybe you usually install a battery discharger app?
Never had such behaviour.
bernie279 said:
Maybe you usually install a battery discharger app?
Never had such behaviour.
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If I enable Aeroplane mode it's still at 99% after a day.
KurianOfBorg said:
I do. The battery actually drains while charging if I'm using the phone.
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Possibly a crap battery, but im going to suggest you don't use the samsung charger. The phone holds a wakelock whilst charging, keeping the phone running at 200Mhz, so unless you are delivering 650mA, your phone will die. Therefore I suggest you are using an unofficial charger, which doesn't deliver the needed 650mA, or you have an unofficial battery which wont accept 650mA. Either way, if you're not using Samsung appliances you shouldn't really be complaining about crap battery.
Sent from my GT-I9100 using xda app-developers app
TheReverend210 said:
Possibly a crap battery, but im going to suggest you don't use the samsung charger. The phone holds a wakelock whilst charging, keeping the phone running at 200Mhz, so unless you are delivering 650mA, your phone will die. Therefore I suggest you are using an unofficial charger, which doesn't deliver the needed 650mA, or you have an unofficial battery which wont accept 650mA. Either way, if you're not using Samsung appliances you shouldn't really be complaining about crap battery.
Sent from my GT-I9100 using xda app-developers app
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I am using the original Samsung charger and the original Samsung battery. I have an additional 3200mAh Mugen Power battery.
It drains faster than the charge rate only if I'm playing games.
Could be many things then, but as you say BBS doesnt report wakelocks, it would all just be conjecture. Try and pull a logcat after an hour or so of deepsleep and see if you notice anything untoward. Also, have you done simple things like turn WiFi off when you're not using it? That scans every 15 seconds or something. Or if you're in a crap phone signal area, your phone will keep scanning for and trying to connect to a better signal.
Sent from my GT-I9100 using xda app-developers app
TheReverend210 said:
Or if you're in a crap phone signal area, your phone will keep scanning for and trying to connect to a better signal.
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It's the phone obviously. Like I said if I put it in Aeroplane mode than the battery is still at 99% at the end of the day. If it's in normal mode it drains severely. I don't have this problem on any other phone. I've flashed the latest modem for my region and tried older modems for my region as well.
Not sure but it sounds like you have technical issues with your phone.
I have the official Samsung uprated battery and I loose about 60% out of the phone battery a day with heavy usage. Usually doesn't get to that point as I charge at work or home when not in use.
I take it as a given that all smart phones, tablets or laptops have ****e battery life.
Blanket generalisations about specific OS' or brands being superior to others is just silliness.
Saying that, when it comes to battery life, my HP Touchpad running CM 10.1 pisses all over any iOS device and the ghost of Steve Jobs agrees with me!
Sent from my GT-I9100 using xda premium
mckeowngoo said:
I have the official Samsung uprated battery and I loose about 60% out of the phone battery a day with heavy usage.
...
I take it as a given that all smart phones, tablets or laptops have ****e battery life.
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60% at the end of the day is a joke. It's unacceptable. Without use My iPhone 4 is at 95% at the end of the day with everything switched on and every possible syncing enabled. Why is it so hard for Samsung to produce a properly working phone after 5 years? I am 100% sure their latest phones like the Galaxy S 4 behave exactly the same way no matter what PR bull**** they try to spin.
KurianOfBorg said:
60% at the end of the day is a joke. It's unacceptable. Without use My iPhone 4 is at 95% at the end of the day with everything switched on and every possible syncing enabled. Why is it so hard for Samsung to produce a properly working phone after 5 years? I am 100% sure their latest phones like the Galaxy S 4 behave exactly the same way no matter what PR bull**** they try to spin.
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Seems the iPhone is the device meant for you, for me in normal usage it lasts 2 and a half days altogether with the stock battery, heavy usage like a gameplay of Gamelofts Modern Combat series or N.O.V.A gives me 3 hours of continuous play after which the battery reaches around 7-10%, wifi in JB sadly kills my battery only gets around 6 hour's with continuous usage which was greater in my GB and ICS days.
But 95% at the end of the day for the iPhone 4 with everything ON is a bit of an exaggeration(the hell kind of unremovable battery is that?) don't you think?
Sent from my GT-I9100 using xda app-developers app
king_below_my_lord said:
But 95% at the end of the day for the iPhone 4 with everything ON is a bit of an exaggeration(the hell kind of unremovable battery is that?) don't you think?
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Everything on with no use. Thats the drain in standby. My SGS2 drains whether I use it or not with everything on. In aeroplane mode, it stays at 99% without use.