Overnight Charging?

[#1]

I think we all do this regularly; I keep my phone charging overnight, I watched it once, what really happens is it keeps on charging till it reaches 100% and it automatically disables charging, when it drops to 99%, it charges again till 100%, and stops till it drops back till 99% and so on..

I was wondering, is this healthy for the phone's battery?

What can I do about it?

Thanks in advance.

[gwhispererz]

It's normal. All you have to do is to unplug your phone once it is 100% charged.

[#3]

Yeah, but it's night and i'm sleeping, I can't wake up and unplug it, so it keeps on doing that process till morning when I wake up, just been wondering if I don't unplug, is it healthy? or should I find a way to unplug at 100% immediately?

[gwhispererz]

No issue to worry, it pretty normal. Normally, I would off and on the main (if it is less than 100%), go wash up, by the time I go back to my phone, it is 100% CHARGED. :D.

[Uliwooly]

The battery shouldn't go down so fast, you probably have a lot of apps running, you can always use "Taskiller" by AxDroid LLC. its free and it works just great, FYI make sure you long press "Back up & Recovery" app and once the menu pops up click IGNORE that way once you kill all the apps that wont be kill, I noticed if you kill "Back Up & Restore" you will lose your network settings (will lose your 3G or H for few seconds).

[#6]

Yeah, I have one. :smileygrin: But you didn't get my question - I'm not asking why it's dropping to 99%, just wondering if it is healthy to keep the phone plugged and charging even when it reaches 100%, I think it's pretty normal though.. to keep it repeating the "process" as described above in my first post.

[Uliwooly]

my bad, this link will answer all your questions http://www.cellpower.com/battery_tips.cfm#Battery%20Do's%20&%20Don'ts

"A new Lithium-ion battery will benefit from an initial "conditioning" of the battery. For the first 3 charge cycles, fully charge the battery overnight and allow it to fully discharge before recharging. Once conditioned, Lithium-ion batteries will perform best when charged at a rate somewhere between a conventional slow charge and a rapid charge. When rapid charging, Lithium-ion batteries require a charger designed to charge Lithium batteries. To achieve a true full charge when rapid charging, the battery needs to be slow charged the last 10-15% of its charge cycle. Most "intelligent" desktop and Lithium-battery rapid chargers provide this capability. A Lithium-ion battery may be damaged by extensive overcharging (continuously on a charger for more than 24 hours)"

That said, your phone will stop charging once it reach 100% and start recharging once it goes down as you guys said it up there, but you don't have to keep your phone 100% all the time, if you charge your phone to 100% and your GPS, brightness turned off, wifi off and bluetooth off it wont lower your battery more than 4% over night, specially if you kill the background apps that you're not using.

[suze · Accepted solution]

Just for added info....

There is a nice little app called Battery Graph free from the market which demonstrates your battery drain and charge cycle.  Basically the phone charges to 100% and then stops taking charge, once the charge hits the low 90's then it starts to charge again back up to 100% and so on through the night.

I attach a copy of an old graph from my phone which displays what happens overnight during the charge cycle.

My phone is always charged overnight from around 10pm til 7am and has suffered no ill effects as far as I can see!

[#9]

Your charging cycle is normal, don't worry about it, the phone controls how the battery is charged whether you leave it connected or not.

Oh and before stumbling blindly down the task killer path - do some reading. Not everyone thinks they are useful never mind required

[Uliwooly]

Yes and No, if you kill all the apps just to kill them then no its pointless, but if you use something like watchdog so you can see what's really using up not just memory but CPU then it makes a HUGE difference.