My device needs two coin cell batteries, one on top of the other. How do I install them?
Md Ariful Islam
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Dr. Md Rushad Rahman
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When you're stacking batteries, the positive end of one battery touches the negative end of the other, and vice versa. So with coin cell batteries, insert the first battery with the positive side face-up. Then, stack the second battery with the negative side facing down (and positive side facing up) so the negative side rests on top of the first battery's positive side.
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