Cleaning the Original Game Boy's Battery Terminals to Remove Corrosion (And Fix Your Gameboy!)

For this guide, I'll show you how to clean your Game Boy's battery terminals, removing corrosion, and hopefully restoring your Game Boy to a working order. In my case, it got my Game Boy working again.
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I also wrote a step-by-step version of this guide (with photos) for those of you who prefer it! howchoo.com/g/...