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feeling pretty good about myself retrobros, just changed the batteries in my dead ruby/sapp/emerald cartridges the proper way using a soldering iron and didn't fuck anything up. got more batteries coming tomorrow so i can change my G/S/C carts and im gonna start my emerald run in preparation of starting my ribbon challenge.
stupid question, but does it matter what region batteries you use on carts? I have a jap crystal cart so I might replace that too since it's there, a UK battery won't fry it will it?