Tenergy Smart Universal Charger for NiMH/NiCD Battery Packs: 12v-24v (UL) Best Charger for charging all RC Car, RC Airplane and Airsoft battery packs 12V - 24V. 100-240V AC input for worldwide use - 500mA charging current. Designed for use with 12V - 24V battery packs (please don't charge battery pack under 12V or over 24V). 15-hour safety timer, charger will stop charging after operates 15 hours.**Meets UL 60950-1 Safety Standards One standard Tamiya male connector installed with the charger.