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Battery Life when iPhone is switched OFF

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GfPQqmcRKUvP

macrumors 68040
Original poster
Sep 29, 2005
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Hey guys. I charged my iPhone 3G to about 95% battery life and then switched it OFF about two weeks ago. I'm out of town, and it is sitting in my cabinet in the off position. I have one week to go until I go back home, and I was wondering if I should tell someone to plug it in for a bit, or if it's fine? I know it's better to use it a little, but I don't really want anyone else using my phone.

I basically would like to know if it is at 0-20% after two weeks, because if it is, I could have someone charge it for a couple of hours. I'm inclined to think it is still doing well, but any input I could get on this topic would be great.


Thanks.
 
should be pretty much where you left off
the phone won't use any power when off, although li-ion batteries do drain a bit
 
Badandy said:
Hey guys. I charged my iPhone 3G to about 95% battery life and then switched it OFF about two weeks ago. I'm out of town, and it is sitting in my cabinet in the off position. I have one week to go until I go back home, and I was wondering if I should tell someone to plug it in for a bit, or if it's fine? I know it's better to use it a little, but I don't really want anyone else using my phone.

I basically would like to know if it is at 0-20% after two weeks, because if it is, I could have someone charge it for a couple of hours. I'm inclined to think it is still doing well, but any input I could get on this topic would be great.


Thanks.
Click to expand...
Don't plug it back in, I am sure many of us would like to know how it holds up.
 
The iPhone was not meant to be turned off. Once you buy it and turn it on, it is supposed always remain turned on. :D

Serious answer: The Apple iPhone online instruction manual actual says that you should not leave the phone turned off for extended periods of time. Their exact wording says "Use iPhone Regularly. For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally. Be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down)."

ULTIMATE LINK !!!!!!!
http://www.apple.com/batteries/iphone.html
Use iPhone Regularly


.
.
.
http://www.apple.com/iphone/tips/
 
Charge the battery to 60% and then leave it off; that say the battery will deplete the least and it will last the longest.
 
ubersalad said:
Don't plug it back in, I am sure many of us would like to know how it holds up.
Click to expand...

Well, I'm back and my iPhone is fine. Just for reference for anyone out there:

Battery at around 85% when I left for the trip

POWERED OFF

3 WEEK BREAK

Battery around 70% when I came back yesterday
 
daihard said:
You mean even if you shut it off? How can a battery drain so fast?
Click to expand...

Yup, my PSP is exactly the same - 2005 Japanese model.

Charge it to full, leave it off for a few weeks and then return to turn it on. Battery dead.
 
I know this is out of place on an iPhone forum, but I agree with the others here.

My PSP battery just flat out stinks and drains SUPER fast if the unit is never powered up.

As far as the iPhone battery, is there any way to get an actual percentage on it or do you just have to go by the silly green meter and guestimate?
 
Rat-Boy said:
I know this is out of place on an iPhone forum, but I agree with the others here.

My PSP battery just flat out stinks and drains SUPER fast if the unit is never powered up.

As far as the iPhone battery, is there any way to get an actual percentage on it or do you just have to go by the silly green meter and guestimate?
Click to expand...

On a jail broken iPhone you can install Bossprefs which has an option to then shows a numeric value battery.
 
Twice now I have switched off my 3g iphone for approx 5days, (circumstances dictate the phone must be switched off).
The iphone was nearly fully charged before it was switched off but when I switched it back on the battery has been flat on both occassions.
Could some app be running in the background even after it is switched off?
The phone is jailbroken and I have Cydia, WinSCP, OpenSSH, BossPrefs and Winterboard installed.
Help to understand what might be happening would be greatly appreciated.
 
Contrary to some responses here, i don't see any problem in turning
the unit "off" to keep those battery ions moving :) ...if you think about it,
even if the OS is not booted up, the unit is still using battery power. If
noticed, the sleep/wake button is not a hard switch, some sort of logic is
running, not only to sense the button, but the amount of time the button
has been depressed. I dont think the unit is entirely "off" unless you
remove the battery.
 
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