The NP-40 is a rechargeable 3.7V lithium-ion battery designed for use in compatible digital cameras and other portable electronic devices. It provides power for camera operation, image capture, and playback without requiring a constant connection to an external power source. The NP-40 typically has a capacity of 1,300mAh, although replacement batteries may vary in capacity and quality. It is available from various manufacturers as an original or compatible replacement. When purchasing a replacement, check the battery dimensions, voltage, terminal arrangement, and camera compatibility. Use a suitable NP-40 charger and avoid mixing incompatible battery types.
