Read guide note How to rebuild a laptop CMOS battery

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Verify polarity and tape the leads onto the new cell

ONLY USE ENOUGH TAPE FOR A FIRM HOLD. Using too much may short out the cell! In addition to using as little tape as possible, the cell must be tested before installation with a multimeter!
After the polarity has been matched, tape the positive lead to the new cell. To remove the risk of a failed rebuild, start on the + side and cut the tape to fit comfortably.

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