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Ipad battery gradually lost charge quicker and quicker, then couldnt hold enough charge to start up. I’m prepared to have a go at opening it up, but can I get a replacement battery and a new adhesive gasket ? Is there such a thind as a walk through video ? Update (12/28/2022)

With the air 2 you have to be extremely careful removing the screen as it’s one unit meaning screen and digitizer bonded together and they are not cheap to replace if you break it. Personally I wouldn’t recommend doing this as a DIY job but take it to a reputable repairer and have them do it. Fearless or not it could be cheaper in the long run.

Hi @sarge57 Here’s the ifixit iPad Air 2 Wi-Fi Battery Replacement guide. This shows what to do and what tools are required. The link to the battery in the guide also gives an option to buy the fix kit which has everything that is necessary to complete the repair. Note: There are shipping restrictions regarding the battery itself.