Charger 72V, 2.5A (2500mA) Standard Polarity with Smart Charge for use with Lead-Acid batteries. Charger plug is a T-prong / T-connector version of a PC plug. The center port of this plug is T-shaped to accommodate any style of PC plug. Works with standard C13 plugs as well as various modified C13-style plugs. Pin configuration from left to right is N+, GND, L-.