Battery issues
Where can I order a replacement battery for my iPad Air 2?
iPad Air 2 Wi-Fi
Where can I order a replacement battery for my iPad Air 2?
iPad Air 2 Wi-Fi
Apple doesn't sell specific repair parts. Even authorized service providers don't have access to OEM iPad parts. The only official way that Apple handles battery replacement to to exchange a device in otherwise good working/cosmetic condition with a service replacement.
iPads sent to Apple then go to refurbishing facilities and the refurbs may go out as retail refurbs or as service replacements for another customer.
Battery issues