Motorcycle batteries supply power to the starter motor, ignition and all other electrical devices, such as lights and horn. So nothing works without a properly functioning battery. Louis stocks batteries for virtually all popular motorbikes, scooters and quads. The different types of battery essentially comprise the conventional acid battery, which is mainly used in older bikes, and maintenance-free sealed AGM and gel batteries. Before you purchase a new battery, you should go to the Bike Database to check which type is right for your particular motorbike.