12V 5Ah Battery.Fits MOST Coolster ATV Models: 3050B / 3050B-2 / 3050D / 3125B / 3125R / 3125X8 / 3125XR8 / 3125XR8-S / 3125C Dimensions (L x W x H): 3.322” x 2.633” x 4.072”Fits on most Chinese made ATVs, Scooters, Dirt Bikes and Go karts. Please check pictures and specifications...