Board Thread:Troubleshooting/@comment-39245013-20190429074758/@comment-38946466-20190429162952

I'm not certain DIY replacement of battery is a good idea, unless the device is ancient and no new version of ios is going to be installed there. Apple has a habit of bricking tampered units.

Some advices about battery can be found here: https://www.lifewire.com/replacing-dead-ipad-battery-1999813