Charger 48V, 3.0A (3000mA) Standard Polarity for use with Lead-Acid batteries. Charger plug is a Three Pin BS EN 60320 C13 connector. Pin configuration from left to right is N+, GND, L-. Be sure to use this charger only in the designated applications with corresponding power ratings and polarities. We do not warrant this product against misuse, all chargers are tested before leaving our facility.