This is a discussion on iPad charge faster if turned off? within the iPad General Discussions forums, part of the Apple iPad Discussions category; Originally Posted by SweetPoison What I wanted to know is if I turn it off, will it charge faster, back to 100%, as opposed to ...
The only time the iPad is really OFF is when you slide the red button right and then get the Apple rotating wheel indicating the iPad is cleaning up memory. If you plug an iPad in while in this totally off state it will come on as seen by the appearance of the Apple logo and after a bit it will go to sleep mode and will be charging.
If you are less than ten percent charge you will not be able to do anything until the iPad passes ten percent on the recharge.
The only thing I found from Apple is guidance that you completely discharge [run down] the iPad occasionally and then recharge. I notice that my Canon cameras [both DSLRs and Power Shots] have no such guidance.
I have read that the LiPo battery has an effective life of at least 3 years and they do last better [somewhat] if you recharge at about the 50% level rather than the 98% full level.
I have only found this to be recommended guidance with nothing to back it up though.
Most people [not all of course] get a new device in about 3-4 years so battery life is not as well reported as we might like.
LiPo batteries do NOT benefit from being fully discharged. If the cells are charged to 4.15V and never discharged below 3.70V, they should have a cycle life of >1,500. If the protection circuit allows charging to 4.20V, cycle life would be ~1,000. Cycle life assumes full discharge/recharge, so part charges on a daily basis should give battery life easily >3 years, possibly up to 7 years (by which time there will be age deterioration anyway.)
Not that this is likely to affect anyone yet, but you'll be able to tell when the battery is dying - it may still charge to 100% but it will then quickly lose charge even when not in use. Once it can no longer hold >80% charge, it will have had it. But that is a long way off for all of us!
When you turn the iPad totally off and you plug it, it turns itself on to the green slider page and goes to sleep, not totally off. Every time I try it does that.
The only thing that can accelerate charge is turning off all radios, as 4phun says. Bluetooth, wifi and 3G.
Not white, not black just passionate shades of grey...
Yuno Wataï Minh
Try this... Start iTunes and plug in your iPad and you will see it between the Store and Playlists where it normally is when it is turned on. Now hold the Sleep/Wake button until the red slider comes on and turn off your iPad. Lo and behold, your iPad will disappear! This means it is turned off! And you can further confirm this by unplugging the docking cable and you will NOT hear the bee boop sound that you would normally hear if your iPad was turned on and you unplugged it.
Last edited by iPadCharlie; 08-29-2010 at 12:50 PM.