am comparing ipad2 and ipad3, ipad2 if i charge and use, it will still charge. if i on the screen for ipad3 and plug in, the charging will be like stalled. I use the ipad3 every day And after so long of use, i have never managed tomget the ipad3 over 80% full charge based on my daily use and charge cycle. unless maybe i leave it at home 1 day to charge for 24 hours.