When I put my ipad to "sleep / standby / lock screen" or whatever, if it is unplugged, it stays off. However if it is plugged in, it will blink every minute or so to let me know the battery is full. It is in a square stand, so it is going to be plugged in and on standby fairly often. My Ipad stays on, but the screen blinks to life / flashes and there is a tone indicating that the battery is full / 100%. I've reseated everything I've cleaned everything and it is still blinking and making that tone. This is only happening when the screen is locked (but obviously the ipad is still on). I'm hoping that without jailbreaking it, I can turn off the setting that alerts me when the battery is 100%.