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What is watch battery
- Sep 05, 2018 -

WINPOWA is a recognized brand of alkaline and lithium button cells.


A watch battery, also called button cell, is a small cell battery in the shape of a squat cylinder. It looks like a button, hence the name.

Because of a small size, button cells are usually used as backup power for small portable electronics such as computer mainboards, electronic watches, digital scales, remote controls, pacemarkers, and hearing aids.

Button cells are single cells, usually disposable primary cells. Common annode materials are zinc and lithium, and common cathode materials include manganese dioxide, silver oxide, or oxygen from the air. Alkaline button cells are inexpensive and perform good at low temperatures, but provide less stable voltage. Silver cells provide higher capacities and more stable voltage but unsatisfying performance at low temperatures. Lithium cells discharge at much higher voltages.