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[title] Remove the battery
[* black] Remove the battery assembly.
+[* icon_reminder] During reassembly, secure the battery tray with strips of [product|IF317-072|Tesa tape|new_window=true] if your replacement battery doesn't come with pre-applied adhesive.
[* black] If you're installing a new battery, follow the [[Battery Calibration|calibration]] procedure:
[* black] Charge it to 100%, and keep charging it for at least 2 more hours.
[* black] Unplug and use it normally to drain the battery.
[* black] When you see the low battery warning, save your work, and keep your laptop on until it goes to sleep due to low battery.
[* black] Wait at least 5 hours, then charge your laptop uninterrupted to 100%.
[* icon_note] If you notice any unusual behavior or problems after installing your new battery, you may need to [https://support.apple.com/en-gb/HT201295|reset your MacBook's SMC|new_window=true].