So I’ve always been in the habit of letting my electronics run down to near empty on the battery before recharging because that’s how I hear you preserve battery life. But then I was thinking, I’m trying to keep the battery life long, but that means I start many days with my electronics only partially charged — i.e., I never get the benefit of the long battery life. Not sure it’s a great trade off.
And then I looked it up and the whole having to let the battery go to empty before recharging is actually an urban legend in regards to modern lithium ion batteries (the memory problem only applied to nickel cadmium and nickel–metal hydride batteries). There are only so many charges a battery has before it loses battery life, but charging from 80% to 100% five times counts the same as charging from 0% to 100% once. In fact, for Apple devices, all Apple recommends you do is let the battery go from 100% to 0% and fully recharge once a month to keep the battery life indicator accurate.
Anyway, just thought I’d share if anyone was torturing themselves with partially charged iPads and iPhones for no reason.