High capacity 9V lithium PP3 battery from Ultralife. * Capacity 1.2Ah * Discharge current 120mA * Size 49 x 26.5 x 17.5mm * Lasts up to 5 times longer than ordinary alkaline 9V batteries and 10 times longer than carbon-zinc batteries * Suitable for use in smoke alarms, security devices, portable devices and medical electronics * Has flat voltage discharge throughout life * Does not contain any mercury, cadmium or lead