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Topic, I would like to know of a better kernal to use for this ROM. Couldn't really find anything in the thread itself. Thanks in advance. I would like some better battery life.
World peace with no regard for human life.
At this time, the only legit option is stock kernal
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Hmm, well that doesn't sound good. How else am I to save battery life?
World peace with no regard for human life.
Use the MANY battery saving tips from threads on here, mainly on syncing and turning off radios you dont need. Also run SetCPU
Incredibly, the one voodoo dance "drain battery, charge off 'till full, and unplug/plug the unit 10 times" works like a charm... Might want to try it.
jacoballen22 said:
Hmm, well that doesn't sound good. How else am I to save battery life?
World peace with no regard for human life.
Click to expand...
Click to collapse
Turn the phone off.
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Mordred69 said:
Incredibly, the one voodoo dance "drain battery, charge off 'till full, and unplug/plug the unit 10 times" works like a charm... Might want to try it.
Click to expand...
Click to collapse
Guess you haven't read about people who've drained their battery all the way and then couldn't get it to charge huh?
Or that HTC says to NOT do that?
That's happened to me. I pulled it out, plugged the usb in and put the battery back in. Let it sit for a few hours and works.
Sent from my PC36100 using Tapatalk
I think things were much better when I was alternating between a few batteries. But seriously, my battery life is atrocious compared to myns warm 2.2 and even cm7.
World peace with no regard for human life.
Does anyone know if charging this phone overnight will "mess up" the battery , because I use an alarm every morning and I need the phone to be on when I wake up. I checked at a lot of sites ( and of course xda too) but i couldn't find the final answer?
samsungepicgeek said:
Does anyone know if charging this phone overnight will "mess up" the battery , because I use an alarm every morning and I need the phone to be on when I wake up. I checked at a lot of sites ( and of course xda too) but i couldn't find the final answer?
Click to expand...
Click to collapse
No it will not. It has a charge script that stops when it reaches 100% then monitors the battery after that and will trickle charge when it drops a couple of percent.
Actually this is a process used to calibrate battery when you first buy one or is the first time you buy a phone. You drain it and charge it overnight. I do this too but not recently because airplane mode allows for no percentage drop..... I don't believe it is harmful but may prove to be over an extended period as are many things. Id say just turn the phone on airplane mode and it shouldn't drop but 1-2 if any percentage.
Sent From My Cyan Samurai
No it is not harmful. However any rechargeable battery wears over time. I have charged my phone overnight since the September 2010 without issue.
No it will not harm it is what I discovered
Here are some sources that say it will not damage it:
http://answers.yahoo.com/question/index?qid=20100408214147AAiiCis
http://news.tigerdirect.com/2008/02...ugged-in-all-the-time-will-harm-your-battery/
And some that say the regulator chip may be harmed:
http://answers.yahoo.com/question/index?qid=20100408214147AAiiCis
http://daily-grind.net/does-leaving-your-laptop-plugged-in-shorten-its-battery-life/
Honestly for me to say, its your choice...
I leave mine in, it's much more convienient...
A general charge overnight will not harm ur battery. But every now and then..u want to perform a charge cycle. Fully chargee it, and let it drain completely. U do this twice. It just basically resets the battery cells. Our phones use a lithium-ion battery plus..its the improved lith battery.
Sent from my SPH-D700 using xda premium
androidmaster1 said:
A general charge overnight will not harm ur battery. But every now and then..u want to perform a charge cycle. Fully chargee it, and let it drain completely. U do this twice. It just basically resets the battery cells. Our phones use a lithium-ion battery plus..its the improved lith battery.
Sent from my SPH-D700 using xda premium
Click to expand...
Click to collapse
NO. NO. NO. Uberpinguin, the one who posts cm7, hates battery calibration, and I'll preach his message for him. Cycling the battery is stupid, it wears life, and wiping battery stats is stupid. Each battery has a specific uuid (I think that's what it is) that tells batterystats.bin what battery it is, and then it THEN locates the info it needs. Not "oh hey, my phone is calibrated for someone elses battery".
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ugothakd said:
NO. NO. NO. Uberpinguin, the one who posts cm7, hates battery calibration, and I'll preach his message for him. Cycling the battery is stupid, it wears life, and wiping battery stats is stupid. Each battery has a specific uuid (I think that's what it is) that tells batterystats.bin what battery it is, and then it THEN locates the info it needs. Not "oh hey, my phone is calibrated for someone elses battery".
Sent from my SPH-D700 using Tapatalk
Click to expand...
Click to collapse
Explain ****ty battery life then when i don't calibrate it when i flash a rom.
When i flashed over to CM7 my phone was getting on average 10-14Hrs depending on usage if i was heavily using it it would be from 6-8Hrs.
After i calibrated it i went from 6-8 on heavy to 12-15 on Heavy and medium usage went from 10-14 to 18-20Hrs. And minimal use ending me up with 24+Hrs
So please explain? because i hate calibrating it but it works.
Ugo, have u ever hard tested a battery? My assumption is no. Are u aware that per manufacture and engineering specs, sometime u have to do calibration. Have u performed appropriate research? I will link 1000 sources that will stat, u should cycle battery once in awhile. Its like a pc..there is the hardware function and there is the software function. Are u an advanced mobile technician? Are u. A mobile engineer? I use to be a technician. Ur basing ur statment from someone else. Have u done this "yourself"?
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When i ve done calibration...and cycling, I increased batter life by 75%
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Battery drain always seems terrible for a short time after flashing a new rom. It does clear up.
Letting your battery drain completely is NOT good for your phone, though I'm unaware of what how it may affect the battery itself. But as I understand it, it is not necessary in any way for the battery itself- so it's useless and doing so will only help you corrupt the data on your phone.
I've been charging mine nightly since Nov 2010 and it's fine.
Those of you with serious battery drain - do yourself a favor and try staying on the same rom for more than 36 hours.
sent from my secret underground bunker
mjben said:
Battery drain always seems terrible for a short time after flashing a new rom. It does clear up.
Letting your battery drain completely is NOT good for your phone, though I'm unaware of what how it may affect the battery itself. But as I understand it, it is not necessary in any way for the battery itself- so it's useless and doing so will only help you corrupt the data on your phone.
I've been charging mine nightly since Nov 2010 and it's fine.
Those of you with serious battery drain - do yourself a favor and try staying on the same rom for more than 36 hours.
sent from my secret underground bunker
Click to expand...
Click to collapse
That is an EXT4/journaling thing and has nothing to do with your phone. MTD and RFS do not have this problem. At time of purchase the Techs and Samsung recommend this battery cycling and running the battery all the way down.
Sent from my SPH-D700 using XDA App
androidmaster1 said:
Ugo, have u ever hard tested a battery? My assumption is no. Are u aware that per manufacture and engineering specs, sometime u have to do calibration. Have u performed appropriate research? I will link 1000 sources that will stat, u should cycle battery once in awhile. Its like a pc..there is the hardware function and there is the software function. Are u an advanced mobile technician? Are u. A mobile engineer? I use to be a technician. Ur basing ur statment from someone else. Have u done this "yourself"?
When i ve done calibration...and cycling, I increased batter life by 75%
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Sent from my SPH-D700 using xda premium
Click to expand...
Click to collapse
Will you please post those 1000 sources? Along with a photo of your tech degree? Also 75% difference? The only thing that's going to give you nearly double your battery is a larger capacity battery.
Sent from my SPH-D700 using Tapatalk
I wasn't aware that a tech degree ruled over experience. How long have u worked with mobiles on the tech side? U want some sources? Ok... gizmodo, lifehacker, phonescoop, rcr wireless, all manufactures, motorola systems engineering site, lg engineering site, wireless week, android police blogs. Buddy ill be here all day posting.
Sent from my SPH-D700 using xda premium
U ever full repair a board, or inner cell reseted a battery? I have. Ever work with an ohms, voltage sensor machine? How about a resistor reader?
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I'm not going to go any further in this argument with u. I've made my point, and that's all I'm saying to u.
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Hey guys! Just gotten my note 2, and gonna drain the battery down soon, should I plug it in and charge for 8 hours straight from zero? Should this be done with the phone off? Or this doesn't matter anymore?
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Doesn't matter anymore...
I usually do it. Zedomax recommends it, and it doesn't hurt anything to do so.
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Is it alright I do it with the power on?
Sent from my GT-N7105 using xda app-developers app
This is not needed anymore.
if the battery takes to long to kill then simply its already calibrated
many people don't know how a none-calibrated battery acts and think "battery life is great but it will get better later!"
if anyone of you happened to have a nokia phone in year 2000ish and still have it around i recommend you to go get a replacement battery for it and see for your self
unless the new battery jumps from 100% down to like 80/70% in no time then take too long to drain from 10% or something like that (in short battery acting weird)
then its already calibrated which is the case in all new phones/batteries
TL;DR
unless the battery is acting weird and not taking too long to kill then you dont need to do that
Hell Guardian said:
This is not needed anymore.
if the battery takes to long to kill then simply its already calibrated
many people don't know how a none-calibrated battery acts and think "battery life is great but it will get better later!"
if anyone of you happened to have a nokia phone in year 2000ish and still have it around i recommend you to go get a replacement battery for it and see for your self
unless the new battery jumps from 100% down to like 80/70% in no time then take too long to drain from 10% or something like that (in short battery acting weird)
then its already calibrated which is the case in all new phones/batteries
TL;DR
unless the battery is acting weird and not taking too long to kill then you dont need to do that
Click to expand...
Click to collapse
Thanks a lot I got my retail set from a carrier, so glad to have joined the note 2 community coming from the s3 :X so I just charge it up to full as per normal yes?
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This charging a long time first usage is also an old thing from the old nicd and nimh batteries..
in fact li-po and li-ion wont even charge after they are done, overcharging them means they explode/burn or get damaged.
there are built in safety features to prevent that.
and pulling it down to 0% means nothing since modern nimh, li-po, li-ion batteries don't got the memory effect.
actually going down to 0% would only test if the low voltage cutoff works as it should or if you damage your battery.
no need for that!
Frostyeo said:
Hey guys! Just gotten my note 2, and gonna drain the battery down soon, should I plug it in and charge for 8 hours straight from zero? Should this be done with the phone off? Or this doesn't matter anymore?
Sent from my GT-N7105 using xda app-developers app
Click to expand...
Click to collapse
Batteries that comes with the latestmpgones these day do not need to be charged for 8 hours!
Just charge it till its full and continue to enjoy it!
You can preserve the life of you battery by not fully charging it and you can damage it by draining completely. I've no source for this information.
Sent from my GT-I9100 using xda app-developers app
Hey guys. So unfortunately better battery stats stopped functioning. Basically when I first got the phone the battery life was pretty good, close to 5 hours screen on time, decent standby battery life. Recently within an hour of screen on and phone off the charger for about 3 hours it could easily be at 50pct. I am currently running wicked version 6 with stock kernel. I haven't downloaded any new apps that have exacerbated it and seems to deliver about the same battery life on a clean install of a rom before restoring all of my apps.
Anyone else experience this? I've tried both my stock battery and another battery with the same results.
Auto sync off as always. No clue why the crazy drop in battery performance and light on the subject would be awesome.
Sent from my SGH-M919 using xda premium
Bump thx
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This erases batterystats.bin
Thanks this seemed to help slightly, but still having significant battery drain
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lorddart said:
Thanks this seemed to help slightly, but still having significant battery drain
Sent from my SGH-M919 using xda premium
Click to expand...
Click to collapse
It's in your mind. Wiping the battery stats did absolutely nothing for you. Guarenteed.
You could have a battery that went bad. Take it out of hte phone and look at it. Is it bulging anywhere on the surface on either side?
If so the battery is bad. Replace it.
If not, it coudl still be a bad battery. See if you can find someone else with an S4 who will let you test their battery for a few hours.
Also, try a full wipe and reinstall of the rom. And restore your apps in small groups over several hours. See if battery life suddenly suffers after installing a particular app.
You could could have a messed up setting in the ROM, a rouge app that isnt' showing up on BBS, a bad battery, etc etc etc.
Try cpu sleeper? Quad core version
Sent from my SGH-M919 using Tapatalk
I noticed a pretty significant reduction in battery life since I bought the device. I see people getting 5-7 hours of screen-on time; 4-5 days idle time, etc... I could easily do that when I first got it but after around 2 months, I'm lucky to have 2 hours screen on; I'll drop about 10% over an 8 hour period on idle... I've tried on fresh installs of both TW and AOSP; adding none of my own apps and the results are the same. Stock kernel, Ktoonsez kernel, various settings, etc... I've also noticed that sometimes, say the status bar will tell me I've got 92% battery left; I boot into recovery and TWRP tells me I've got 97% left. That, to me, sounds like the battery is going south so I'll be trying a new battery here soon.
Thanks for the suggestions guys, I've got a spare battery been the same experience and similar to cheetoh, I've done fresh installs, no apps and standard kernel with same results. I'll maybe pick up a zerolemon and see if that plus a fresh start helps because this is ridiculous. My battery life used to be amazing I loved it, best phone to date for me, 5+ hours screen on and would spend the day outta the house, come home late night and still have 30pct. Now, it's at 30pct by 1pm... No difference in how I use it, if anything I use it less now. I'll try these things again and probably pick up a zerolemon... Usually this isn't a problem but I'm going to have to be spending a few long days without access to a charger during the day, and don't wanna get screwed. Anyway thanks guys.
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If nothing helps get a Zero Lemon 7500
Battery.
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lorddart said:
Thanks for the suggestions guys, I've got a spare battery been the same experience and similar to cheetoh, I've done fresh installs, no apps and standard kernel with same results. I'll maybe pick up a zerolemon and see if that plus a fresh start helps because this is ridiculous. My battery life used to be amazing I loved it, best phone to date for me, 5+ hours screen on and would spend the day outta the house, come home late night and still have 30pct. Now, it's at 30pct by 1pm... No difference in how I use it, if anything I use it less now. I'll try these things again and probably pick up a zerolemon... Usually this isn't a problem but I'm going to have to be spending a few long days without access to a charger during the day, and don't wanna get screwed. Anyway thanks guys.
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Click to expand...
Click to collapse
So this still happens even with a different battery?
I'm not complaining about battery life bit I just fond this strange how with nothing running my phone went from 20% to dead that fast. Phone was locked and in my pocket. Anyone have any ideas? It's also not the first time this has happened either just the first time I thought to get a screen shot of battery usage right after
**Update**
Now my phone is dying at random :/ it does it from 50%, 30% etc. Any suggestions (i.e. battery calibration, full factory reset) or should I make it stock again and get a replacement?
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I've found battery level to be unreliable at low levels. Even rebooting the phone when low will often yield varied results
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I know one day I will get the 14% notification and be good for like 45 minutes. Then another I'll get it and then bam phones dead
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Some more pics of battery issue
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Batteries are gauged by how much voltage they are pushing in most tests. Though from my hobbies of electric rc cars, I've learned that batteries can change their voltages simply from a temperature change. While these changes may not be significant, they do represent differences and used to play a big part in my fifteen minutes charge cycles. It's harder to receive a positive rating in a cell that is low on power than it is with one on max charge. So if I'm down to twenty percent or so, I use my phone very sparingly. Has been pretty trustworthy for me over the years.
Either way, suspicious battery drain is usually a rogue application sitting there eating resources as the phones we use do seem to monitor battery life pretty good compared to the old voltage meter methods.
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You have anything auto syncing? I know I use the nfl mobile app and that can put s drain on ny battery life.
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I found the htc-Facebook app drains funny on the battery. When I loaded bonestock, then loaded Facebook from the play store, it helped my battery. I think it's the way the htc-Facebook interacts with blinkfeed.
Could be completely of base, but I know the htc loaded Facebook is slightly different.
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charge it to 100 then bring it to down to 0. then back to 100 and youll probably be fine
mkeefner said:
I'm not complaining about battery life bit I just fond this strange how with nothing running my phone went from 20% to dead that fast. Phone was locked and in my pocket. Anyone have any ideas? It's also not the first time this has happened either just the first time I thought to get a screen shot of battery usage right after
**Update**
Now my phone is dying at random :/ it does it from 50%, 30% etc. Any suggestions (i.e. battery calibration, full factory reset) or should I make it stock again and get a replacement?
Sent from my HTC6500LVW using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I assume you had a good signal everywhere you went? Nothing drains a battery faster than being in an area where there is very low or no signal. It constantly tries to connect and it will KILL your levels very fast. I see this quite a bit in my work place. Employees with Sprint and many times AT&T will complain about their battery dying at work only to find out the phone was constantly searching for a signal.
mjs31 said:
I assume you had a good signal everywhere you went? Nothing drains a battery faster than being in an area where there is very low or no signal. It constantly tries to connect and it will KILL your levels very fast. I see this quite a bit in my work place. Employees with Sprint and many times AT&T will complain about their battery dying at work only to find out the phone was constantly searching for a signal.
Click to expand...
Click to collapse
You know, I totally forgot about that. I used to have that issue with Sprint myself. Killing the data would eliminate TONS of battery usage when I was at work. Now that I'm on Verizon, there's never much problem. But he's completely right. If you're not getting a quality signal your phone may be searching and that can be an all day thing which just eats a battery alive.
I am in a near perfect signal. I'm pretty sure its has nothing to do with coverage. What's strange to me is the phone immediately dies. It will be at 50% and then the screen goes black and won't come back on. Once I plug it in the phone finally comes back on and is at zero.
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Exchange it. My first One had weird reboot issues. It might a bad phone.
Sent
And another. Phone was right around 50% and then bam off
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mkeefner said:
And another. Phone was right around 50% and then bam off
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Click to expand...
Click to collapse
The battery is obviously defective. You need to get a replacement.
Sent from an HTC One
Alright. Time to start the relock process :/
Thanks for the help everyone
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ddurandSGS3 said:
charge it to 100 then bring it to down to 0. then back to 100 and youll probably be fine
Click to expand...
Click to collapse
That's bad juju for the type of batteries we have.
MissionImprobable said:
That's bad juju for the type of batteries we have.
Click to expand...
Click to collapse
really? just once to recalibrate it? I only had to do it once with my S3 but it worked after that.
got a read that could give me some info? my bad ive done it in the past
MissionImprobable said:
That's bad juju for the type of batteries we have.
Click to expand...
Click to collapse
I'd have to search around, but taking these batteries all the way down actually reduces their effective life.
Sent from my DROID2 using xda app-developers app
Basically, the more you drain the power before charging, the less charge cycles the battery will have. Someone who charges at 75% compared to someone who charges at 25% will have more cycles over the life of the battery. I can't remember the exact numbers, but there's been plenty of studies on the issue. And if I'm correct charging at those numbers, the 75% will have more than twice the charge cycles over the life of the battery. The biggest battery killers though are actually higher amperage charges. One study showed more than five times the life cycle at 3.7v per cell compared to 4.3v. And the charging required to power the higher voltages actually cause more damage over time than the extra mah output is worth. The HTC one has a decent setup and the stock charger doesn't over feed the cells. But in not sure if it will make it to the 700 charge cycle that a two year contract may leave a user with.
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