4KS21P is a high quality battery from Rolls. The cold cranking current of the battery is 1148 A. The dimensions of the product are 400 x 238 x 629 mm. You should use the dimensions of your old battery as a guide for your selection. Reliable Flooded Lead-Acid technology for your vehicle The 4KS21P has a capacity of 1481 Ah. The higher the value, the more electrical charge can be stored in the battery. Flooded Lead-Acid batteries like the 4KS21P are designed for deep cycle renewable or marine use, providing long-lasting power. You should consider this when buying Before you buy, check that the circuit and polarity of your new battery are identical to the values of the old model. The circuit shows whether the positive pole is on the right or left of the battery. To determine this, position the battery so that the poles are facing you. With the 4KS21P, the circuit is N/A.