When you say you checked the current, I hope you don't mean you put the meter across the battery terminals and set it to read current? If that's what you did, you just killed a perfectly good battery, and probably the memory contents with it. When a meter is in current reading mode, it acts as close to a short circuit as its designer can manage. It is meant to go IN SERIES in a circuit, not in parallel. Based on the extremely high current reading you reported, it sounds as if you shorted it. These little batteries are intended to put out a microamp or so for long periods, not 80,000 microamps (80 mA). Sorry.

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