LSLA20-12 is a high quality battery from Lucas. The dimensions of the product are 180 x 76 x 167 mm. You should use the dimensions of your old battery as a guide for your selection. Durable AGM technology for your vehicle The LSLA20-12 has a capacity of 20 Ah. The higher the value, the more electrical charge can be stored in the battery. AGM batteries like the LSLA20-12 are suitable for industrial/standby applications. They have a long cyclic life and are vibration-resistant. 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 LSLA20-12, the circuit is 1, so the positive pole is on the left.