Gently pry the battery free from the adhesive holding it in place.

Take care not to pierce or rupture the battery, which can release dangerous chemicals.

If you're having trouble working the battery free, warm it up with an iOpener or hair dryer to soften the adhesive, and then slide a credit card behind the battery to break up the adhesive.

Be careful not to yank the battery out—you'll need to disconnect a connector before removing the battery completely.