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Coin cell battery

Coin type batteries or coin cells are used in numerous applications to power electronic circuits. A coin cell battery generally refers to a battery with a wafer-shaped housing with conductive leads for powering a chip. The coin battery has two major surfaces respectively forming positive and negative electrodes. The positive electrode also extends to a circumferential edge of the disk-shape. The housing is usually plated with nickel or other metal. A coin cell typically comprises small, usually round structure having a top conducting surface that acts as a first polarity electrode contact and a bottom conductive surface which acts as a second polarity contact. Coin batteries that have a disk-shape are often employed in electronic equipments, such as computers, microprocessors, as additional power source or back up power source. The coin battery is mounted to a circuit board by a battery connector which comprises a housing defining a central cavity for receiving the coin battery. Conductive terminals for positive and negative electrodes of the battery are fixed to the housing and electrically connected to the circuit board.

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