Introduction
To replace the battery, you will first need to remove the casing, undo the adhesive under the battery pack, and, finally, remove the battery to replace it.
What you need
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Warm up an iOpener following the instructions found in the iOpener guide.
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Place the warm iOpener on top of the edges of the screen. This heat will weaken the strength of the adhesive between the display and body.
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Carefully try to work your way around the device using the picks, reapplications of the heated iOpener, and luck.
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Now that you've gotten the casing off of the Surface 3, you can start removing the battery pack.
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Tool used on this step:Plastic Cards$2.99
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Slide the iFixit plastic cards under the compartments of the battery pack.
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Slide the card around to undo the adhesive under the battery pack
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Carefully slide the battery's flat power and data connector from its insert.
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You may now switch out the battery pack for a new one.
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