Maxell AG13 Batteries 10 Pack. This can be a 1.5 volt alkaline button cell battery generally utilized in laser pointers, watches, children books, calculators and medical devices. A control button cell battery is really a small, round battery that's .457 inch across and .21 inch thick. An alkaline battery is really a battery that utilizes manganese dioxide and zinc to produce a reaction, which is a cost-effective option to silver oxide batteries, while still supplying high capacity and lengthy usage. This can be a primary cell battery, which is non-rechargeable. This alkaline button cell battery provides lengthy power existence and ideal continuous power sources for your device. Works effectively both in high and low temperature. Maxell LR44/AG13