It is always safer to take along a second battery, particularly when travelling. The high-performance lithium-ion battery provides sufficient capacity for around 400 (CIPA-standard) pictures and can be recharged in next to no time. Constant monitoring of relevant battery data guarantees safe and convenient operation.This battery is compatible with the Leica C-Series and has a capacity of 950 mAh with a voltage of 3.7 V.