iPad Air 32 GB, not quite 3 years old. I noticed several months ago that it was not holding a charge like it used to. I did the customary, obligatory steps of reducing brightness, deleting some apps I don't use, and having it "time out" quicker. It finally came to a point it wouldn't even make it through a Sunday morning church service (I have a Bible app on there and would sometimes reference something online that our pastor was speaking on) without dying. As soon as it hit the charger, it was ready to go. Then it wouldn't even stay powered on for more than a couple of minutes without being connected to the charger. The funny thing is when it died, once it was on the charger it would come right back on and show 100% charged. Sunday afternoon it died still on the charger. It came back up one time after several hours, stayed on a few hours, and dead again. I put it on the charger for hours and nothing. Then yesterday completely out of the blue it powered on without being on the charger, stayed on a couple of hours, and now is back to paperweight status again. Bad battery? Is it worth fixing or should I buy a new one? I paid almost $500 for the thing including tax, so I kinda hate to just let it sit!