Right now I can send my Ipad Air 2 to Apple for a battery "replacement". My battery life aint what it used to be but I can still get by. Im worried about Apple dropping support unexpectedly if I wait too long to send it in. $99 isn't too outrageous to get a new battery IMO. Where would I look for warnings that support is ending soon? For example, its just a rumor I think, but there was talk of IOS 13 dropping support for the IPad Air 2. That might not be the same as repair support but still I worry the device is about to be made obsolete.