I'm fixing an old Conair cordless razor, battery finally died. Bought the battery and I'm ready to solder it in, but one problem. I don't know which wire is which. I'm faced with a black and an orange wire. Black is top, orange is bottom. I'm guessing that the black is positive and orange is negative? If I'm wrong though, I'm afraid I'll kill the battery if I charge it backwards. I'm not sure how a multimeter would be helpful here since there's no current, and I can't put it in the charger with the battery cover taken off and I can't use a multimeter with it in the charger. lol I only know a tiny bit about electronics, I'm a beginner at this... I've only used a multimeter once or twice, so I'm not even sure if I'd be using it correctly if I tried using it, but I'm willing to learn! Hoping someone can help me here?
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