BC-20 Casio - Replacement A/C D/C Rapid Battery Charger for Casio NP-30 Batteries (Incl. Car Cord and European Plug Adapters) Fully charges the battery in approximately 60-90 minutes. Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock. Dual voltage unit (110- 240V) can be used worldwide! Includes European plug adapter. Meets (or exceeds) OEM standards.