Check out the video above or the step by step guide below for assistance with this repair

iFixit Apple Watch Series 3 Battery Replacement Guide

Here are some tools you may need to help you complete the repair.

Please note: A discounted simple toolset with the tools you need is available in a pop-up when you add this product to cart

• uFix iOpener Microwaveable Heated Bag Opening Tool
• iGadget Exacto Technician Knife with x5 blades
• iFlex Metal Flexible Opening Tool (display edge only)
• iGadget Plastic Triangle Opening Picks (set of 5)
• Y000 Metal Triwing Tri-Point 0.6mm Screwdriver Tool
• Nylon Antistatic Spudger Pry Tool
• Mechanic AK-15 King ESD Anti-Static Curved Tweezers
• iGadget Plastic Alcohol 200mL Bottle with Pump Top
• Apple Watch Series 2 / Series 3 Cellular 42mm Force Touch gasket
• Apple Watch Series 3 42mm LCD screen adhesive
• B7000 Multipurpose Liquid Repair Glue
• 1mm Tesa Tape 61395 Roll
• iGadget Universal Magnetic Work Project Mat with Marker (30cm x 25cm)

Here are some helpful tips to assist you in completing a safe repair on your device. If you are unsure of something or have any questions, please feel free to contact us either by phone (0508 IGADGET) or by email

• Drain the battery below 25% before you start on this repair. A charged lithium-ion battery can catch fire if it's punctured or damaged
• Power the watch off and take it off its charger before you open it
• Warm the display with the iOpener, then cut the adhesive with the knife no more than about 3mm in, working slowly so you don't split the Force Touch gasket or cut the display cables. Use the iFlex on the display edge only, never near the battery
• Lift the display with a pick and separate it from the Force Touch gasket. Open it only to about 45 degrees: its cables are still connected underneath
• Track your screws on a magnetic mat and handle them with tweezers, so each tiny screw goes back in the right place
• On the GPS + Cellular watch the Force Touch gasket has to be disconnected and folded out of the way before the battery can be disconnected. Then remove the Y000 screw and the metal cover over the battery connector (open it all the way, close it halfway and lift it out), and pry the connector straight up with a spudger and bend it up slightly so it can't touch
• Keep metal tools away from the battery, and never bend, crush or puncture it. Lift the old battery slowly with a plastic pick, keeping it shallow, as the display cables run underneath it
• Remove every bit of the old battery adhesive and clean the case with isopropyl alcohol. Peel the liner from the new battery's adhesive, press the battery into place and reconnect it, then check the watch powers on and charges before you seal it. If the pre-attached adhesive won't hold, use a small strip of 1mm Tesa tape
• Clean the old adhesive off the Force Touch gasket and the display with isopropyl alcohol. Lay new LCD screen adhesive on the gasket (or fit a new gasket with adhesive if it split), or run a thin bead of B7000 glue around the case edge, then press the display down evenly while it sets
• If your watch doesn't turn on after the repair, force restart it: hold the side button and the Digital Crown together for at least 10 seconds, until the Apple logo appears