ABC RBC1. Battery technology: Sealed Lead Acid (VRLA), Battery capacity: 4000 mAh, Battery voltage: 6 V. Width: 101.1 mm (3.98 "), Depth: 47 mm (1.85 "), Height: 70.1 mm (2.76 "). Colour of product: Black. Size: 4.75 mm (0.187 ")