IOS 8

[Munson]

My understanding is the opposite. Varied charging, and keeping it between 50-80% is better for them than complete drain cycles from 100% to <20%

 

[DannyR]

My understanding is the opposite. Varied charging, and keeping it between 50-80% is better for them than complete drain cycles from 100% to <20%

I believe that keeping them between 20-100 is good, but they need a full drop to 0% once a month!

 

[CrippsCorner]

Indeed this advice is from Microsoft but a battery's a battery so their advice...

Recharge anytime. The battery doesn’t need to be empty or low before you recharge. You can recharge the battery whenever you want. However, it’s best to let the battery run down to 10% at least once per month before you recharge it.