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My Lithium ion battery is getting really hot and needs replacing but I don’t know how to replace it or even take apart the tablet

Siri0s_Tech Media, The battery, cable/charger or charge port may be faulty damaged. Look in the charge port and blow/pick out(carefully) any dust/debri that may be causing an issue also look in the port for any bent pins and straighten very carefully with a tooth pick. Try a different compatible charger/cord to see if that is the issue. If different compatible charger/cord does not fix and port looks good, the battery or connection could be bad, if able to clean battery connections and reconnect/install battery, If still heating up,probable faulty battery. Links below to vid’s showing how to get inside the Samsung Galaxy Tab A 9.7. to enable you to change battery possibly. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. https://www.youtube.com/watch?v=MiQtIv4lhttps://www.youtube.com/watch?v=ZrcSTW2j