Related
Hey what's up. I got this G2 with the latest cm7, which is build number 21 and the battery life is horrible. Like 8 hours with an hour of the display being on. I'm coming from the Epic which had pretty good battery life once calibrated.
So what's the proper way of calibrating the G2? I am using the stock kernel that comes with the Cm7 rom right now but I did try the pershoot kernel couple times and underclocked it but it still didn't help. I think all that kernel flashing messed up my battery life. So any ideas? Thanks!
Sent from my HTC Vision using Tapatalk
saywhat4118 said:
Hey what's up. I got this G2 with the latest cm7, which is build number 21 and the battery life is horrible. Like 8 hours with an hour of the display being on. I'm coming from the Epic which had pretty good battery life once calibrated.
So what's the proper way of calibrating the G2? I am using the stock kernel that comes with the Cm7 rom right now but I did try the pershoot kernel couple times and underclocked it but it still didn't help. I think all that kernel flashing messed up my battery life. So any ideas? Thanks!
Sent from my HTC Vision using Tapatalk
Click to expand...
Click to collapse
Charge your phone all the way to 100% (not just until the LED turns green, which is around 90%), unplug and boot into recovery, wipe battery stats, boot back into Android and use your phone until the battery drains and your phone shuts off. Keep trying to power up until it won't any more.
Now, plug your phone in (into the wall, not a computer) and charge until full *without* turning it on. Remember, the LED turns green around 90% so you'll need to leave it another few hours after the LED changes. Once you're full, unplug and boot into Android and again use it until the battery is fully drained and you can't power up anymore and you're good to go.
Remember, after wiping stats, during the draining process *do not* plug it in to the charger or your computer as thiss will mess up the calibration.
Its a pain, and takes a day or so, but its worth it. To speed up the draining process, do some process intensive things (video watching, game playing, etc.)
Sent from my T-Mobile G2 using XDA App
OriginalGabriel said:
Charge your phone all the way to 100% (not just until the LED turns green, which is around 90%), unplug and boot into recovery, wipe battery stats, boot back into Android and use your phone until the battery drains and your phone shuts off. Keep trying to power up until it won't any more.
Now, plug your phone in (into the wall, not a computer) and charge until full *without* turning it on. Remember, the LED turns green around 90% so you'll need to leave it another few hours after the LED changes. Once you're full, unplug and boot into Android and again use it until the battery is fully drained and you can't power up anymore and you're good to go.
Remember, after wiping stats, during the draining process *do not* plug it in to the charger or your computer as thiss will mess up the calibration.
Its a pain, and takes a day or so, but its worth it. To speed up the draining process, do some process intensive things (video watching, game playing, etc.)
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
Thanks for the tip. Now I have been doing some reading and saw some people recommended charging the phone while it is on when it is fully discharged the first time. You recommend while its off? Does it make a huge difference?
saywhat4118 said:
Thanks for the tip. Now I have been doing some reading and saw some people recommended charging the phone while it is on when it is fully discharged the first time. You recommend while its off? Does it make a huge difference?
Click to expand...
Click to collapse
I don't think it would make that big of a difference; if you think about it though, you're dealing with the battery and battery only if the system is turned off.
Sent from my T-Mobile G2 using XDA App
True we are dealing with the battery but when we wipe the battery stats I think it only wipes the battery information the phone had in its system. So if we wiped the stats when it is full then let it discharge till completely empty, im assuming, you would have to charge it while its on so the phone can now learn what the battery level is and when its full and its capacity. I'm just guessing I could be wrong though. I'm just going to try both and see what happens.
Sent from my HTC Vision using Tapatalk
OriginalGabriel said:
Charge your phone all the way to 100% (not just until the LED turns green, which is around 90%), unplug and boot into recovery, wipe battery stats, boot back into Android and use your phone until the battery drains and your phone shuts off. Keep trying to power up until it won't any more.
Now, plug your phone in (into the wall, not a computer) and charge until full *without* turning it on. Remember, the LED turns green around 90% so you'll need to leave it another few hours after the LED changes. Once you're full, unplug and boot into Android and again use it until the battery is fully drained and you can't power up anymore and you're good to go.
Remember, after wiping stats, during the draining process *do not* plug it in to the charger or your computer as thiss will mess up the calibration.
Its a pain, and takes a day or so, but its worth it. To speed up the draining process, do some process intensive things (video watching, game playing, etc.)
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
I have used this method to calibrate the battery and can say that it does have a pretty big impact on battery life. +/- 20% in my case. I also find that I need to re-calibrate roughly once every month or so.
To be clear, there is not such thing as "calibrating the battery", you are calibrating the battery meter (volt meter) on the phone. Maybe its just a semantic distinction, and that is what the OP and subsequent replies are talking about. But many people get this confused, due to the old process of "conditioning" NiCad batteries, which is not applicable to modern cell phone (Li ion) batteries.
In my understanging, you aren't going to increase battery life by doing any of the above, but only making the battery meter more correctly read how much power is left. For instance, if the meter is not properly calibrated, it may read lower than it should. So people think they are increasing their battery life.
I would discourage from discharging the battery to empty. Over discharge of Li ion batteries can possibly (not often, but in a small percentage of cases) prevent the battery from taking a charge. There is a safety circuit which is supposed to prevent over discharge, but it does not always work. Therefore, Li ion batteries should not be discharged lower then 20% whenever possible. Most of us do it from time to time on accident, but there is not reason to do it intentionally. Charge the battery to 100%, drain to 20%, and repeat a couple times. This will get your battery meter plenty accurate. Draining it to empty does not really gain you anything (the battery meter is not that accurate in the best of circumstances, anyway), and can harm the battery.
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Flashing a new ROM resets the battery meter. So until its properly calibrated, it will give you junk readings. This is one reason why people often jump the gun and think that a custom ROM is getting them poor battery life. Calibrate the meter, and use the ROM for a couple days, then you should get a real indication of what the battery life is like on that ROM.
redpoint73 said:
I would discourage from discharging the battery to empty. Over discharge of Li ion batteries can possibly (not often, but in a small percentage of cases) prevent the battery from taking a charge. There is a safety circuit which is supposed to prevent over discharge, but it does not always work. Therefore, Li ion batteries should not be discharged lower then 20% whenever possible. Most of us do it from time to time on accident, but there is not reason to do it intentionally. Charge the battery to 100%, drain to 20%, and repeat a couple times. This will get your battery meter plenty accurate. Draining it to empty does not really gain you anything (the battery meter is not that accurate in the best of circumstances, anyway), and can harm the battery.
Click to expand...
Click to collapse
I was about to post this. Letting a LiIon discharge all the way is more harmful to the battery than recharging it mid drain cycle.
I'm having a bit of battery issues, I haven't flashed a ROM or calibrated my battery meter. So I charge my phone to full while still on, unplug it and drain it until it turns off (NOT until the battery is completely drained, which could potentially damage the battery), plug it up and let it charge while off, and I should be calibrated?
Do you need to have root to be able to reset battery stats?
Sent from my T-Mobile G2 using XDA App
I have 2 extended batteries, one is 2200mAh and the other one is 2400mAh. They both drain very fast unless they are charged using an external charger. I was just wondering if anyone else was having draining issues as well.
XDA app on EVO 4G
shonmac11 said:
I have 2 extended batteries, one is 2200mAh and the other one is 2400mAh. They both drain very fast unless they are charged using an external charger. I was just wondering if anyone else was having draining issues as well.
XDA app on EVO 4G
Click to expand...
Click to collapse
I personally believe that the algorithm used to determine charge capacity is inaccurate. I have a 3500 mah battery and I have to go through a series of charging maneuvers to get it to charge completely. Once it is charged fully, the battery life is outstanding. But if I simply disconnect when the LED turned green, without my maneuvering, it "appears" to drain fairly quickly.
Posting & replying via the XDA Premium app
dougjamal said:
I personally believe that the algorithm used to determine charge capacity is inaccurate. I have a 3500 mah battery and I have to go through a series of charging maneuvers to get it to charge completely. Once it is charged fully, the battery life is outstanding. But if I simply disconnect when the LED turned green, without my maneuvering, it "appears" to drain fairly quickly.
Posting & replying via the XDA Premium app
Click to expand...
Click to collapse
I have the same exact problem. Do you think an update in the firmware could possibly fix this problem if it were brought to HTC/Sprint's attention
XDA app on EVO 4G
shonmac11 said:
I have the same exact problem. Do you think an update in the firmware could possibly fix this problem if it were brought to HTC/Sprint's attention
XDA app on EVO 4G
Click to expand...
Click to collapse
It would need to be more than 1 person complaining to get that kind of result. id by chance you're on PRL&NV 1.90, try downgrading to 1.77, as many users see better battery life on 1.77 over 1.90.
teh roxxorz said:
It would need to be more than 1 person complaining to get that kind of result. id by chance you're on PRL&NV 1.90, try downgrading to 1.77, as many users see better battery life on 1.77 over 1.90.
Click to expand...
Click to collapse
I don't know how to do that and I'm not rooted
XDA app on EVO 4G
If the battery drain you see is the INITIAL drain this is to be expected. Your phone will drop to about 92% or so in the first 10 minutes. After that it should be smooth sailing
(if this is not what you're talking about, disregard this comment haha)
dougjamal said:
I have a 3500 mah battery and I have to go through a series of charging maneuvers to get it to charge completely.
Click to expand...
Click to collapse
Can you define maneuvers?
I have a 3500 mah battery too. I usually leave it on the charger for a good 90-120 minutes after the green light is lit. Once the waveform in the batt monitor widget has stabilized to one resembling a sawtooth wave (/\/\/\/\/\/) with identical amplitudes, I consider it done. I followup by shutting the phone down, waiting til the amber light is green again, then unplugging/booting up.
Depending on the amount of use during the previous off charger time, rebooting it keeps the os from slowing down.
Greenfieldan said:
If the battery drain you see is the INITIAL drain this is to be expected. Your phone will drop to about 92% or so in the first 10 minutes. After that it should be smooth sailing
(if this is not what you're talking about, disregard this comment haha)
Click to expand...
Click to collapse
That's what happens but not around 90% its more around 70% then it last for about 8 hours
XDA app on EVO 4G
I have a 3000mah battery and I use battery snap to monitor volts and remaining time left on battery. The battery status could say 100% but I look at the volts. If it says 100% but only 3.991 Volts for example then I know my battery isn't fully charged and within 10min it will be at 88% . But when my volts say 4.204 volts then I know it's truly at 100% and battery life is great . So I suggest check the voltage before unplugging.
Sent from my PC36100 using XDA App
What do you mean manuvering
?
Sent from my Desire HD using XDA Premium App
ive read lots of threads about the battery on the evo, its natural for it to drop from 100% to 90% within the first 10 min, something about the evo not charging the battery fully to help preserve the battery or something, there is some steps you can do to charge the abttery fully, but that invloves turning it off, plugging, unplugging, etc... personally i use an external battery charger, and 2 batteries, it seems to charge the battery better, and it doesnt seem to drop that 10% so quickly, it still drops faster then it should, but it seems to stick a little longer, but after it drops that 10% it stabalizes and drops a lot slower, u can pickup batteries and chargers cheap
My phone seems to be using 2% battery every 15 minutes on standby, worse when its on.
When I check what is running, it says Android OS 50%...... what can I do? I usually charge my phone three times a day.
Sent from my Galaxy Nexus using xda premium
I use a variety of apps to check what is going on with my phone.
Watchdog - monitors apps for excessive cpu usage
Cpu spy - see how long your phone stays at each frequency, but more importantly in deep sleep.
Battery monitor widget - monitors battery usage
System tuner pro - get detailed analysis of a recorded system usage.
Also, when in battery usage, I click android os to see how long it has kept your phone awake. Have you made any changes to your phone? Installed a custom ROM?
Sent from my Galaxy Nexus using xda premium
Also...give it a few days of charge-ups. It really does make a difference.
FWIW, with moderate use, my Droid Charge 4G does about 10-15% every hour. So I don't even think 8%/hr is that bad... :/
no changes to the phone, its all stock. Any benefits moving to a custom ROM on the nexus?
I've had the phone for two weeks, battery has deteriorated. Now charge it three times a day.
Sent from my Galaxy Nexus using xda premium
Crazy CS said:
no changes to the phone, its all stock. Any benefits moving to a custom ROM on the nexus?
I've had the phone for two weeks, battery has deteriorated. Now charge it three times a day.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
You probably never calibrated it properly to begin with. Charge to 100% > unplug > wipe batterystats.bin > let the battery drain completely until the phone powers off. Then charge it continuously over night and in the morning unplug and let the phone drain completely until it powers off.
I am a pretty heavy user as I text literally every 2 minutes all day (girlfriend ) and I manage to get 20-25 hours easily.
I also drain my battery out completely every day for good measure
Charging in between screws up your calibration, try not to charge unless you are below 15%. And do not disconnect it until it is fully charged (98-100%).
Note: I've also noticed wifi saves you a lot more battery juice than being on 3G/4G, so keep your wifi active if you are in range
KiNG OMaR said:
I also drain my battery out completely every day for good measure
Charging in between screws up your calibration, try not to charge unless you are below 15%. And do not disconnect it until it is fully charged (98-100%).
Click to expand...
Click to collapse
This is just not accurate for Lithium Ion batteries, which have no cell memory and gain more from frequent shallow charges than deep charges.
krohnjw said:
This is just not accurate for Lithium Ion batteries, which have no cell memory and gain more from frequent shallow charges than deep charges.
Click to expand...
Click to collapse
Not to mention draining a Li-ion past 5% can shorten the life of the battery.
Further Li-ion's have a lifespan measured in cycles. You get about 500 cycles on a typical Li-ion. A cycle is a drain and charge. If you use 50% of the charge and then recharge to 100% you only use half a cycle. By needlessly draining the battery you are using up limited cycles reducing the life span of the battery.
While I'm sure android's calibration needs to know the upper and lower boundaries of a charge I'm certain it would be smart enough to handle charges when the battery isn't completely drained. Most battery calibrations work this way. Every once in a while you need to charge to 100% drain to 5% and recharge without using to 100%
Wheres battery stats.bin located?
Sent from my Galaxy Nexus using xda premium
Crazy CS said:
Wheres battery stats.bin located?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Clockwork Recovery -> Advanced.
.. file is in /data/system i believe
its probably a bad app working with ICS.
Use watchdog and it will tell you.
Check your widgets that they aren't constantly refreshing.
I'm a new and I don't know if let Arc from x% to 0% batterry (Ex : you are watching movies and listen to music then go to over sleep) and Arc auto turn off --> Arc will be damage ?.
With your experience, would you let me know about this
Thanks !
well from looking at one angle it might cause u serious problem..but if u have an external charger then u can charge and use your phone
dont let lithium batteries to drain till single digits..keep them charging whenever u get a chance
Maybe if you have a custom ROM, my arc s has turned off by itself from low battery and i just recharged until it was strong enough to boot into the homescreen
http://en.wikipedia.org/wiki/Lithium-ion_battery
Prolonging battery pack life
Avoid deep discharge and instead charge more often between uses, the smaller the depth of discharge, the longer the battery will last.
Avoid storing the battery in full discharged state. As the battery will self-discharge over time, its voltage will gradually lower, and when it is depleted below the low-voltage threshold (2.4 to 2.9 V/cell, depending on chemistry) it cannot be charged anymore because the protection circuit (a type of electronic fuse) disables it.
Lithium-ion batteries should be kept cool; they may be stored in a refrigerator.
The rate of degradation of Lithium-ion batteries is strongly temperature-dependent; they degrade much faster if stored or used at higher temperatures.
The rate of degradation of Lithium-ion batteries is also related to battery charge level; they degrade much faster when at 100% charge, than at lower charges. Since batteries die if deep discharged (depleted) and since a battery has some self-discharge it is frequently recommended to store batteries at 40% charge level.
Click to expand...
Click to collapse
I hope that tells you the answer.
if you leave it @ 0% for any extended period you run the risk of it never taking charge again. i have done this to countless (not phone) batteries by accident and i can tell you that it is 100% true.
Pvy.
I didn't know that tnx for sharing.This XDA is a good thing,we find some usefull stuffs here,tnx guys.
Sent from my Xperia Arc using XDA
so basically, it is dangerous to leave it at both 0% and 100%?
d3FytH3m1Nd said:
so basically, it is dangerous to leave it at both 0% and 100%?
Click to expand...
Click to collapse
Yes and no lol. Basically using your battery is the best thing you can do.
Pvy
sent from xda app
I better starting to treat my battery better then, haha..
Skickat från min LT18i via Tapatalk 2
If you let it die it may give you a hard time getting it charged again. It needs a certain amount of power to boot the phone to a state where it can check the battery and start the charger. I have killed mine a couple times and had a few tense hours trying to get it charging again. So it is best not to let the battery die completely
Sent from my LT15i using xda app-developers app
SL_Don said:
If you let it die it may give you a hard time getting it charged again. It needs a certain amount of power to boot the phone to a state where it can check the battery and start the charger. I have killed mine a couple times and had a few tense hours trying to get it charging again. So it is best not to let the battery die completely
Sent from my LT15i using xda app-developers app
Click to expand...
Click to collapse
Thanks for your experience. But android don't have any soft auto turn off phone when battery is 10-15% ?
Besides the main battery power, there is also a reserve power when the battery is discharged. If the reserve is depleted, the battery will be completely discharged and cannot be used at all. Prolonged full discharge of the battery will shorten its working life.
Sent from my LT18i using xda app-developers app
Is it safe to charging at night, if it's not, what will it do to the battery?
Customer service always tells me to charge it just for 3-4 hours, but I have difficulty with that since I get home late and I leave early, but I still manage to get a full battery without it charging overnight but I would just like to know
Sent from my SGH-M919 using xda app-developers app
kevinrubio1 said:
Is it safe to charging at night, if it's not, what will it do to the battery?
Customer service always tells me to charge it just for 3-4 hours, but I have difficulty with that since I get home late and I leave early, but I still manage to get a full battery without it charging overnight but I would just like to know
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
Click to expand...
Click to collapse
Hmm that's weird, but from the sounds of that, I don't think it's healthy for the battery to charge for a long time
Sent from my SGH-M919 using xda app-developers app
lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
Click to expand...
Click to collapse
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
lalec said:
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
Click to expand...
Click to collapse
That thread is perfect! I would use it but I need notifications to notify me but I did use it for a night! Amazing difference
Sent from my SGH-M919 using xda app-developers app
lalec said:
Sounds like Google services are using your phone at night. That happens to s lot of people but can be stopped if you follow the battery life thread that skipjacks started.
Sent from my SGH-M919
Click to expand...
Click to collapse
I do use that guide. My signal is terrible and is what drains my battery. I really don't believe that is related to any app running wild and draining my battery because from completely dead to 100% takes about 2.5-3 hours with me using it, WiFi on, brightness at 100%, etc; I can also easily get over 2 days without a charge with light use... It would be more but my lack of signal accounts for an almost 1.5% per hour idle drain. Good signal areas I'll drain less than .5% per hour with no use/app changes outside of having a strong signal.
Weird...
When your phone charges to 100%, your phone knows to stop charging, mine always stops charging when is says "reached 100%". I just leave it on the charger and it stays steady at 100 until i take it off.
It shouldn't effect the lithium ion, either.
I thought that was the special thing about lithium ion?
They don't wear down?
Idk, could be wrong.
Sent from my SPH-L720 using xda app-developers app
Overnight charging is a no no. More info here http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
I always leave it charging when I fall asleep. And if, IF I wake up in the middle of my sleep and see that it's at 100% I'll unplug it. If I don't wake-up I'll just leave it charging until I wake up. Been doing that since before I even had a smartphone and never had any problems. Then again I do switch phones every year
Sent from Flip's Galaxy S4
lordcheeto03 said:
I do use that guide. My signal is terrible and is what drains my battery. I really don't believe that is related to any app running wild and draining my battery because from completely dead to 100% takes about 2.5-3 hours with me using it, WiFi on, brightness at 100%, etc; I can also easily get over 2 days without a charge with light use... It would be more but my lack of signal accounts for an almost 1.5% per hour idle drain. Good signal areas I'll drain less than .5% per hour with no use/app changes outside of having a strong signal.
Click to expand...
Click to collapse
A bad signal will definitely drain your battery. When I know I am in an area without signal and will be there for a few hours I turn my phone's power off so I have some battery left when I need it.
Sent from my SGH-M919
I've always charged my phone at night and have never had usages with the battery.
Sent from my SGH-M919 using Tapatalk 2
Bought some cheap batteries on Amazon, I charge whenever I want, however I want (typically overnight, all night). If I ruin the battery, so be it, I can just pop it out and replace it in 5 seconds. This is the real advantage of having a removable battery.
I've always left my smartphones on the charger overnight. Seven years going and haven't had any issues. I do tend to replace my battery after 9-12 months of use though.
lordcheeto03 said:
I do it when I can't get a full charge before bed; but I also wake up 2-3 times per night and tend to unplug it once I notice it's at 100%. I've read that once it reaches 100%, if it stays on charge for a certain amount of time it will switch to battery and drain, then charge back to 100% after a certain percentage is drained. I would say that's the case as I woke up one morning and the phone was at 92% charge and was in the process of charging. Battery info said it was charging on AC and the graph showed it went to 100% then back down.
Click to expand...
Click to collapse
This sums it up. Per the article linked earlier in the thread about charging li-ion, it sounds (relatively) trivial for the device manufacturer to implement a charging cut-off after the cells reach a specific voltage level. Once the cells drop to a certain level they're safe to charge again, and the cycle starts over. I don't imagine it's great for the battery to sit on that recharge cycle, but it's not going to over-charge and become a fire hazard.
I imagine external battery chargers might be a little different. That $3 battery & charger from eBay isn't going to have the same safety regulations as a major manufacturer like Samsung.
norml said:
Overnight charging is a no no. More info here http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
An interesting tidbit from that article.
Li-ion does not need to be fully charged, as is the case with lead acid, nor is it desirable to do so. In fact, it is better not to fully charge, because high voltages stresses the battery.
Click to expand...
Click to collapse
I'm pretty sure a $600 phone can handle any of your charging blunders. Relax kid.
We're not dealing with Nokia's anymore.
Sent from my SGH-M919 using xda app-developers app
Avoiding full charge has benefits, and some manufacturers set the charge threshold lower on purpose to prolong battery life.
Lithium-ion does not need to be fully charged; a partial charge is better.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
tikay00 said:
I'm pretty sure a $600 phone can handle any of your charging blunders. Relax kid.
We're not dealing with Nokia's anymore.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
All the other comments say not to charge over night...
Sent from my SGH-M919 using xda app-developers app
I charge mine overnight with no issues.
Sent from my TI-82 using XDA Premium
I just called Samsung and they highly recommend me to not charge it over night
Sent from my SGH-M919 using xda app-developers app
norml said:
Avoiding full charge has benefits, and some manufacturers set the charge threshold lower on purpose to prolong battery life.
Lithium-ion does not need to be fully charged; a partial charge is better.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
I get the general concepts that the article presents, but it doesn't really address any advances in charging methodologies that newer devices could add. It reads like it was designed for 'dumb' devices such as cordless phones, rechargable power tools, etc. For instance, it says never to charge with the device powered on. Yet Windows Phones (at least my Lumia 800) won't charge with the device off...plugging it in automatically boots the phone up.
Our phones obviously have more advanced power circuitry, such as being able to hold the power button in and have the device power cycle no matter what state the phone is in, and I assume it applies to other parts of the phone as well.