LSLC42-12 is a high quality battery from LUCAS. The dimensions of the product are 197 x 165 x 170 mm. You should use the dimensions of your old battery as a guide for your selection. Durable AGM technology for your vehicle The LSLC42-12 has a capacity of 42 Ah. The higher the value, the more electrical charge can be stored in the battery. AGM batteries like the LSLC42-12 are suitable for marine and leisure equipment with high energy requirements. They have a long cyclic life. The technology of this battery covers the energy needs of marine leisure applications. 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 LSLC42-12, the circuit is 1, so the positive pole is on the left.