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Hi,
I'm currently using JuicePlotter to see how my battery drains over time and this past night I think it drained more than it should (or maybe not).
For the ones who don't know, JuicePlotter runs in the background (of course) analyzing your battery, that too wastes battery juice of course. Thought, the app dev says on his website:
Perhaps the most important feature of JuicePlotter is that - unlike all similar apps and widgets - it's very battery friendly;
Click to expand...
Click to collapse
So I'm not sure if the problem lies on JuicePlotter or not, I'll have to test it one night without it...
This is how JuicePlotter displays it's graph:
The coloured bands along the graph show your screen brightness, radio usage, charging status and battery temperature. Just scroll around to find precise information and make sense of the different colours.
Click to expand...
Click to collapse
I went to bed at 4:10 with the battery at 97%. Around 13:00, it was at 89% and I didn't receive any calls/messages/mails/whatever during the night. The WiFi/3G was off all night along with the screen of course. The battery temperature remained the same too. I don't know if it makes a difference but I normally turn off Auto-Sync if the WiFi is off too.
Is it normal to lose 8% of battery juice in 9h in standby? I think it's a bit too much, but I don't know... Does the same happens to you too? What else cloud it be?
Interesting looking app. I've never noticed much of a lose overnight. Just installed the app, will fully charge and give you an update tomorrow.
Also how's the cell reception in your area? I've heard it can drain the battery a far bit if the reception is low.
Sent from my HTC Hero using XDA App
I'll have to do more testing but I think it's the app's problem... Tonight, I went to bed with 83% and it was exactly the same when I woke up...
I fully charged mine last night and turned on JuicePlotter. Still showing 100% this morning. Both in the app and on the phones battery indicator (in the notification bar). Do you know of any other apps similar to this that could be run in tandem?
Weird, Battery Graph also does the same thing...
This needs more days of testing on my part...
My battery goes from 100% - 0% in about 16hrs... doesn't matter how much I use the phone or not.
I have BatteryGraph but the results don't really mean anything to me as it just shows battery life vs time on a scale.
I'll try JuicePlotter to see if I can pin down exactly what's causing my terrible battery life.
I have a feeling it's running at full speed even when in standby but I'm not sure how to check if this is the case. Any ideas?
EDIT: Looking at BatteryGraph I've lost 15% in around 1hr... nothing unusual going on with my phone that I know about... just standard stuff running in the background. Perhaps the battery itself is simply past it's best.
CitizenLee said:
My battery goes from 100% - 0% in about 16hrs... doesn't matter how much I use the phone or not.
I have BatteryGraph but the results don't really mean anything to me as it just shows battery life vs time on a scale.
I'll try JuicePlotter to see if I can pin down exactly what's causing my terrible battery life.
I have a feeling it's running at full speed even when in standby but I'm not sure how to check if this is the case. Any ideas?
EDIT: Looking at BatteryGraph I've lost 15% in around 1hr... nothing unusual going on with my phone that I know about... just standard stuff running in the background. Perhaps the battery itself is simply past it's best.
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Click to collapse
Wow that is terrible, try apps like Taskpanel and when you add programs to your auto kill list the program kills the programs as long as they are running in the background when the screen is off, however if you are on lets say your browser and you don't go to your homescreen the screen goes off into stand by it will not kill the app. Also try draining your battery to the point it shuts down by itself, plug it in let it charge for a bit, boot into recovery wipe battery stats start up the phone or leave it off (your choice) and let it charge fully. Are you using setcpu or OC Widget or anything? If you are using SetCPU make a profile for when screen is off and make it underclocked like 264 Mhz to 480Mhz, or with OC Widget tick the 'use different screen frequencies' (don't remember what it is called since I don't use it) and do the same; I like SetCPU better because when you turn the screen on it switches profile faster where as OC Widget takes its time however with SetCPU do not use the widget it will cause Sense to FC and I'm not sure about Vanilla.
Hope this makes sense since all my ideas are said at once.
::EDIT::
shelnes said:
The way I've learned to recalibrate the battery is to let it go down to 5%, boot phone into recovery and wipe batterystats, then power off the phone. Let the phone charge until the green led is on without turning it on. Then turn on and use the phone as usual. Learned it over at modaco. Worked as a charm, and batterytime was improved. I have personally experienced strange batterybehaviour after periods with flashing a lot of roms.
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Click to collapse
Here.
That's interesting...
Cause I've been playing with ROMs latetly, creating my own, testing hacks and stuff... And most of the time the phone is plugged and the battery is charged, during the flashing process it's using the battery and then it charges again. I also have to leave from time to time and when I get back I continue my stuff, meaning I'm charging the battery at high levels.
I'll have to try that calibrate method...
For now, for the past 2 nights, with JuicePlotter off, I've noticed the battery level did not change at all during the night. Tonight I'm going to try one more time with JuicePlotter on...
MentalDeath said:
Wow that is terrible
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Click to collapse
Wiped battery stats at 5% last night, let the phone die and then charged whislt off until green light came on. Been keeping an eye on it all day and there has been a noticable improvement.
The phone came off charge at around 2am (so around 12hrs ago) and it has only lost 20%, which is a lot better than I was getting before.
It was probably just due to me messing about with some many ROMs and update zips lately as I tend not to have too much crap running in the background (I use OSMonitor).
I will look into setCPU but I remember trying it before with VR12 and it ended up causing some weird problems meaning I needed to do a full wipe to get everything working again.
Thanks for the help
This night, with JuicePlotter on, I only lost 1%, seems reasonable now... I don't know why that one time I lost 8% during the night. Maybe an isolated case? Something was probably running when it shouldn't, I just don't know what.
I just did the conditioning thing for my battery.
Charged fully, then wiped battery stats, now i have to drain it.
How can i drain it FAST?
i have gps on, bluetooth on wifi on
watching a HQ youtube video while listening to music
why is it that when i dont want my battery to drain it drains fast as hell, but when i want it to drain it feels like an hour from 100 to 99?
how can i make this even faster??
Do a lot of rebooting always kills mine
willsnews said:
Do a lot of rebooting always kills mine
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Click to collapse
holy ****, its working every reboot gets like 1% haha
97 more reboots to go
Turn gps on, go outside and actually use it with maps or navigation. Will kill your phone in 1 to 2 hours.
Sdobron said:
Turn gps on, go outside and actually use it with maps or navigation. Will kill your phone in 1 to 2 hours.
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Click to collapse
rather not its like 30 degrees outside here in Texas ha
so far, 31 minutes used and went from 100 to 76 an hour or two more, and BAM it'll be good.
I put a live wallpaper on and now its running like hell hahah
Even if you're indoors maps and searching for signal might help knock it down more.
STOP
Deep cycling is really bad for Lithium-ion batteries. I don't know why people keep perpetuating this myth that you should do this after burning a ROM. I blame Team Whiskey et all, etc . . . blah blah (You flashed our ROM now recalibrate your battery)
Lithium-ion batteries do not have a memory, you do not need to deep cycle them like Ni-Cad, doing so seriously shortens the lifespan of the battery. So unless you notice that the readout for the % of battery charge seems very off from reality don't recalibrate. Even if it is off a little, it will fix itself over time as you charge and use your phone. You don't even need to let it drain a lot. Just use it like normal and charge it when ever you get a chance.
T313C0mun1s7 said:
STOP
Deep cycling is really bad for Lithium-ion batteries. I don't know why people keep perpetuating this myth that you should do this after burning a ROM. I blame Team Whiskey et all, etc . . . blah blah (You flashed our ROM now recalibrate your battery)
Lithium-ion batteries do not have a memory, you do not need to deep cycle them like Ni-Cad, doing so seriously shortens the lifespan of the battery. So unless you notice that the readout for the % of battery charge seems very off from reality don't recalibrate. Even if it is off a little, it will fix itself over time as you charge and use your phone. You don't even need to let it drain a lot. Just use it like normal and charge it when ever you get a chance.
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A lot of people r telling me it helped them
Sent from my SGH-T959 using XDA App
xriderx66 said:
A lot of people r telling me it helped them
Sent from my SGH-T959 using XDA App
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Click to collapse
Um, just Google search Lithium-ion. Read a little about the battery technology for yourself and you will see why it is very BAD advise to deep cycle your battery. After a little more than a year with Li-Ion the battery will only hold about 70% of the charge it held when it was new. Keep deep cycling and you will shorten that time to about 4-5 months. Then these same people come back here and ***** about how crappy their battery was because it only lasted a few months and they will offer as proof that it was always crappy because they had to recalibrate it a frequently. I alway think the same thing to myself when I here this from people, "dumb ass, you killed it."
Hell, the sales rep at T-mobile tried to tell me this crap when I purchased my phone. I asked her where she got her electrical engineering degree with focus on battery technology from. After the puzzled look settled from her face I told her that the advice she gave was about the worst thing you could do to the battery. She didn't believe me, but I told her to look it up on her fancy Google powered smart phone. After she did that she apologized.
xriderx66 said:
A lot of people r telling me it helped them
Sent from my SGH-T959 using XDA App
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Click to collapse
A lot of people say things they don't understand, don't drain your battery as such, it's not good.
I wont do it... but
I've already pressed wipe battery stats does rat mean it already happened or something? Is there anything I can do to reverse this iif I did it wrone
Sent from my SGH-T959 using XDA App
xriderx66 said:
I wont do it... but
I've already pressed wipe battery stats does rat mean it already happened or something? Is there anything I can do to reverse this iif I did it wrone
Sent from my SGH-T959 using XDA App
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Click to collapse
Wipe battery stats, does not affect the battery, only deletes the stats saved by the OS. It won't make your battery run faster, or better. These are only STATS saved by the system to tell you where your power is going.
Don't go all psycho about the battery issue. get a cheap chinese knokoff battery from ebay with charger (as I did) and just go out with 2 batteries, even with heavy use, 2 batteries should last you all day. (well, with certain roms, Almost all day)
gagb1967 said:
Wipe battery stats, does not affect the battery, only deletes the stats saved by the OS. It won't make your battery run faster, or better. These are only STATS saved by the system to tell you where your power is going.
Don't go all psycho about the battery issue. get a cheap chinese knokoff battery from ebay with charger (as I did) and just go out with 2 batteries, even with heavy use, 2 batteries should last you all day. (well, with certain roms, Almost all day)
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Click to collapse
I am running Axura 2.1 with no changes to the modem or theme and a stock battery. My phone is only about 2 months old but running stock I got about 11-13 hours and now I get 24+ hours when I let it. Normally I just charge it every night anyhow because it does not hurt anything, in fact it is better for the battery.
Nothing uses more power than the touch screen. Keep scrolling pages and your phone will be a hand warmer.
I've noticed deep cycling lithium ion batteries can destroy capacity to almost nothing quickly. Keep a charge on it whenever you can. The internal resistance is so low, you won't ever notice a "memory." Until the chemistry inside has rotted itself out.
dattaway said:
Nothing uses more power than the touch screen. Keep scrolling pages and your phone will be a hand warmer.
I've noticed deep cycling lithium ion batteries can destroy capacity to almost nothing quickly. Keep a charge on it whenever you can. The internal resistance is so low, you won't ever notice a "memory." Until the chemistry inside has rotted itself out.
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Click to collapse
Excellent job of putting into layman's terms the endless cycle of the relationship of heat creating the substance on the electrode that increases resistance, which creates more heat in an endless cycle that is the death of batteries.
In lead acid batteries (like your car, motorcycle, or uninterruptible power supply) oxidation on the plates create this internal resistance and it is why car batteries are rated by number of months, like a 72 month battery. It happens to some extent to all rechargeable battery technologies, but in the case of Li-Ion batteries the internal chemistry actually tear them selfs up over time.
Long story short is the two really big enemies of Li-Ion batteries is deep cycling and heat. In fact if they are not vented well, and allow heat to build up, you get the battery fires you may have heard about with the Dell and Apple laptops that used the Sony batteries. There have also been a few phones that have been known for melting down.
Y'know, I would love to see a big sticky in one of these forums about this. Another voice of reason -- Don't deep cycle your battery, don't cycle it unnecessarily and don't worry about calibration. Your phone calibrates itself all the time and the less often your battery spends any time at low charge the longer it'll last.
Thanks guys good thing I didn't go too far before one of you told me not to do this.
Thanks again
Sent from my SGH-T959 using XDA App
2.3.4 eclipse 1.3 in my situation, so I don't understand what causes such ridiculous Phone Idle percentages, is it from ram being abused, an unreliable connection, android hating?
(everything else is commonly below 10%)
wifi is typically left disabled, and i keep it slightly underclocked
what else android, what else!
I swear...the phone never truly goes into sleep mode...it stays awake for large chunks of time doing god knows what...every other phones battery usage graph I have compared it to looks completely different and only has small tiny lines of awake time...mostly when screen on...my x2 shows huge chunks awake when the screen hasn't even been turned on and data disabled for over 4hrs...I don't understand it. Killing my battery
it's a kernel bug, reboot yer phone immediately after unplugging it, every time. or downgrade to froyo (i got my absolute best battery life from froyo
Cheapxj said:
it's a kernel bug, reboot yer phone immediately after unplugging it, every time. or downgrade to froyo (i got my absolute best battery life from froyo
Click to expand...
Click to collapse
Me?
Yeah I have been doing that since that fix was posted...it helps with life and awake times but it is still horrific compared to other phones...whether I reboot from power menu..power of/on...or whatever....it needs to be fixed...I don't understand why it does this...im about to delete the things that allow it to communicate with moto databases lol...
compare the battery capacity of other phones, most other phones come with at LEAST an 1800mAH battery, this thing is 1500mAH if you're lucky, couple that with 2.3.4's reporting bug and you end up thinking you're going dead much faster than you actually are.
I spend over half my days hovering at 15% or lower according to the phone, but I've also realized that it lies, alot... like my ex.
what does that actually do? =o
like what if you reboot a couple hours after unplugging?
... Christ what was 2.3.4 for if they didn't even get some of this stuff cleaned up
it prevents the idle process from "running away" when you plug it in it essentially disables the idle process, when it goes to re-enable it, it never stops, it takes up CPU cycles and burns the battery down for no reason and it will do it from the moment you unplug your charger/USB cable until you restart the phone.
why? beats me.
I thought you no longer needed to reboot after unplugging on 2.3.4? I did it every morning on 2.3.3, but stopped after updating to .4
I'm confused with this. Wouldn't a phone idle of 70% mean you the phone has been sitting there not being used?
As far as sleep, i use a cpu monitoring app from time to time and it shows my phone in "deep sleep" for multiple hrs when I'm not using the phone; my phone idle will show an equal high %, too.
Sent from my DROID X2 using xda premium
that list indicates power consumption. if I reboot my phone in the morning, idle stays around 10-15%, if I don't, that number skyrockets 40-45% and by 5 or 6 pm, I'm hunting for a place to plug in.
my biggest boosts in battery life came from turning on "data saver" disabling "background data", anytime you can make the 3g radio shut off, you're saving TONS of power
I also just upgraded to a BH6X battery, it was the ONLY way I could make it through a full day when I was working in Cheyenne, Wyoming (cell service there, not so great) I also use wifi as much as possible 'cause it seems to draw less current.
battery life and signal strength definitely have a correlation. the less signal you have the quicker that battery dies.
also, "SuperDim" (available on the market) is a HUGE battery saver, not to mention the fact that the automatic light sensor just doesn't make the screen dim enough, ever. I kinda miss the semi transreflective screen in my G1, I never had to crank the brightness way up to see that one in broad daylight, made the colors funny but at least it was legible. but that's the price you pay for pixel density
I've never had bad enough battery life to try Juice Defender but my roommate uses it on his bionic and it does pretty well. His only complaint is having to load facebook or his browser twice to get data to come back on.
Sent from my Eclipsed and ICS themed X2.
I am getting amazing battery life! Coming from a myTouch4G which would last maybe half of the day, its amazing!
I was at 51% when I plugged in my phone today. I have been using it all day and pretty extensively.
No juice defender either...
This is a mysterious problem for me also. I could have phone booted
up full charge everything that load's up is started. I could turn on airplane mode not do anything else for the day. (So No data no phones) And every-time I bring up screen I will see the amount of apps running go's up (ghost apps)
battery down & less & less ram available.
Has anyone ever tried to go into Sleep Mode I click it just locks up.
What's This Phone Doing Behind My Back??
If this was helpful, be sure to press the thanks button!
ashclepdia said:
I swear...the phone never truly goes into sleep mode...it stays awake for large chunks of time doing god knows what...every other phones battery usage graph I have compared it to looks completely different and only has small tiny lines of awake time...mostly when screen on...my x2 shows huge chunks awake when the screen hasn't even been turned on and data disabled for over 4hrs...I don't understand it. Killing my battery
Click to expand...
Click to collapse
Cheapxj said:
it's a kernel bug, reboot yer phone immediately after unplugging it, every time. or downgrade to froyo (i got my absolute best battery life from froyo
Click to expand...
Click to collapse
Yep, it's a kernel bug, from what I understand. Ugh.
ImgBurn said:
Has anyone ever tried to go into Sleep Mode I click it just locks up.
What's This Phone Doing Behind My Back??
Click to expand...
Click to collapse
If you manually tell your phone to go to sleep, you have to long-press the power button for like 6 seconds to wake it back up.
This bug happens on multiple Motorola phones (bionic and d3). I know for a fact that this has been brought up multiple times to Motorola thru customer complaints, Motorola feedback program and carrier complaints. But for some reason they don't care or feel its a big issue. For issues like this, I wish they would unlock the bootloader.
I just installed this:
http://forum.xda-developers.com/showthread.php?t=1246822
Have just been running it for a little bit but what I can see is that it definitely has an impact on battery life (in the good way). My battery seems to be dropping slower.
Thanks to 0vermind two posts above me.
how is the BH6X battery for you?
how long does it kick for? =)
Watercycle said:
2.3.4 eclipse 1.3 in my situation, so I don't understand what causes such ridiculous Phone Idle percentages, is it from ram being abused, an unreliable connection, android hating?
(everything else is commonly below 10%)
wifi is typically left disabled, and i keep it slightly underclocked
what else android, what else!
Click to expand...
Click to collapse
I cant for the life of me remember but I read somewhere that unchecking the "automatic" setting in "date & time settings" stopped that part from oversyncing and draining battery. I have had mine unchecked for a while and seems to help some. Might be worth a shot. oh I usually 19% +- 1-2% on my phone idle at pretty much all times
motcher41 said:
I cant for the life of me remember but I read somewhere that unchecking the "automatic" setting in "date & time settings" stopped that part from oversyncing and draining battery. I have had mine unchecked for a while and seems to help some. Might be worth a shot. oh I usually 19% +- 1-2% on my phone idle at pretty much all times
Click to expand...
Click to collapse
That was me in "phone awake" thread.
What it solved for me was the chunks of time phone is awake(when screen has been off) are extremely reduced compared to when the setting is checked.
Only thing is that once in a while(mainly after bootstrapper use or a battery pull) the date/time is messed up. Easily fixed by turning the setting on for 5-15 seconds til it fixes itself and I turn it back off
Ash,
Yea discovered that today when I put in new class 10 16gb sdcard. No worries easy fix like you said super find been using your discovery for a week know working great.
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/
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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.
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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.
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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
Hey guys
On the weekends I'm usually home and I do use my phone quite a bit..but I'm mostly sitting at my computer doing so.
Is it better for me to keep the phone plugged in or should I be letting it drain? I heard that large drain cycles are not good for the battery and will wear it out faster...I've learnt that with my original Samsung battery...I have an extended one, now.
I've searched around...some people say one thing, others say the opposite...so what's the deal, really?
Thanks,
Elliott
The battery is desinged to be drained, you can always use your device plugged in when you are about to run outta juice.
Sent from the little guy
Right...but if I'm going to be texting constantly on the phone...is it better to just leave the phone on charge while I'm using it, or keep draining it/charging it back up?
As I said, use it.
If battery is low, just charge it while you do.
Sent from the little guy
Thanks.
Anyone else have any info on this?
Elliott
Bump
There was an article on XDA a while ago about the battery in mobile phones.
http://forum.xda-developers.com/showthread.php?t=1168036
Summary:
It doesnt matter if you keep it plugged in or not. It will do no damage to it.
What you shouldn't do with this kind of battery is draining it to 0% like some people suggest. In fact it is better to keep it charged above 40% to maximize the lifetime of your battery.
Here is also an other thread about it.
http://forum.xda-developers.com/showthread.php?t=1914417
Thanks for the threads.
The first and 2nd threads you posted through, seem to contradict each other.
The first thread said
Hence constantly recharging a lithium ion battery does not shorten the battery life more than normal usage would. Avoid letting it sit on empty for too long; instead, keep it charged-up if you can.
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The second thread said:
Avoid keeping your battery at 100%: Every source I referenced for this guide said the same thing about keeping your battery at a full capacity, but oranageinks.com explains [...]
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lol, we gotta get a lithium battery Ph.D here
I never let my battery die on me, I only do it once to get rid of fuel gauge (although some say that it fixs it on it own after three days or so) whenever I flash a new ROM.
I always let it frain to 15 % or something like that.
Starholdest said:
Thanks for the threads.
The first and 2nd threads you posted through, seem to contradict each other.
The first thread said
The second thread said:
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It doesnt really contradict each other. They warn you about heat that is bad for your battery when charged to 100%. Keeping your phone at 100% in a hot enviroment does more damage then having it at 40% in the same enviroment. The same applies to running an app that keeps your cpu running constantly thus heating up your phone.. But in normal circumstances it shouldnt do harm.
It sounds like someone is obsessed about their battery not being at 100% all the time.
Charging and discharging your battery shortens it's life. This is the way it was designed.
Chill, it's just a phone, not an artificial heart
Sent from my digital submersible hovercraft.
Lennyz1988 said:
It doesnt really contradict each other. They warn you about heat that is bad for your battery when charged to 100%. Keeping your phone at 100% in a hot enviroment does more damage then having it at 40% in the same enviroment. The same applies to running an app that keeps your cpu running constantly thus heating up your phone.. But in normal circumstances it shouldnt do harm.
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Well I think they clearly contradict each other...one says to keep your battery charged up, the other says not to keep it at 100%...
I understand about the heat degrading batteries...but that's another discussion completely.
Anyone else have any opinion?
f-r said:
It sounds like someone is obsessed about their battery not being at 100% all the time.
Charging and discharging your battery shortens it's life. This is the way it was designed.
Chill, it's just a phone, not an artificial heart
Sent from my digital submersible hovercraft.
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I wouldn't call myself obsessed...I'm just wondering if leaving it plugged in for a good portion of the day will reduce it's life. Because I did that with my original Samsung battery and it's barely usable for me now...just wondering if leaving it plugged in for long periods of time diminished it's life over a year and a half.
I think batteries don't like to be plugged all the time.
For what i've read in the last 4 years nobody knows exactly what's good and what's not for them.
You be the judge.
Sent from the little guy