Introduction
If for some reason your battery is dysfunctional, this guide will show you how to replace it.
Tools
Parts
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            Disconnect the battery from the motherboard by unplugging the red, white, and black wires from the white adapter. 
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            Use a plastic spudger to pry the battery off from the white plastic piece underneath. 
 
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To reassemble your device, follow these instructions in reverse order.
20 comments
The tutorial is excellent, even with a link to the tools needed, but no link to battery sale.
Could you please include this?
juliomap -
Very good tutorial thank you. But I can also find no place to buy a new battery... But here is a petition to make Gopro sell spare parts: https://www.change.org/p/gopro-support-o...
maire -
I followed these steps and inadvertently pulled not only the battery plug but its adapter (housing) at the same time. Now I can't plug the battery back in because there's no place to plug it! Contacting GoPro they stressed that the battery is not intended for removal.