Follow this guide to remove and replace the battery in your Samsung Galaxy Note5. [ … ] '''Before disassembling your phone, discharge the battery below 25%'''. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured. [ … ] '''IfIf your battery is swollen, [[What to do with a swollen battery|take appropriate precautions|new_window=true]]. '''Do not heat your phone'''. If needed, you can use a dropper or syringe to inject isopropyl alcohol (90+%) around the edges of the back cover to weaken the adhesive. Swollen batteries can be very dangerous, so wear eye protection and exercise due caution, or take it to a professional if you're not sure how to proceed.