The Vidpro AC/DC Rapid 4.2 Volt Battery Charger for Casio NP-40C Batteries charges the NP-40 battery for Casio EXILIM digital cameras. Keep this charger handy in case you need to give your NP-40C some juice. This is a rapid charger - get your camera up and running quickly. Bring on the Road This charger is compatible with your Casio NP-40 battery and features both a car charger and a standard wall charger. Keep it at home or the office or take it with you in case you re out a while and need to recharge your camera on your way.