Sigmas SP6-4.5 Sealed Lead Acid - AGM - VRLA Battery - This is an AJC Brand Replacement This is an AJC Brand&#174; Replacement for a SigmasTek SP6-4.5 6V 4.5Ah Sealed Lead Acid Battery Voltage: 6V (6 Volts) Capacity: 4.5Ah Terminals: F1