The battery supplies the electrical parts of a vehicle with power, even without the engine running. As soon as the engine is running, the alternator automatically charges the battery. ... Two-wheelers are equipped with standard batteries which have to be filled up with battery acid from time to time, and maintenance-free batteries, which are delivered completely sealed and must not be opened. MF batteries are either gel batteries, in which the electrolyte is bound and gelled with silica, or AGM batteries with glass fibre mats. We carry batteries from renowned manufacturers such as Yuasa and Fulbat, and also RMS batteries for Vespa. We also carry battery testers and battery chargers and jump start kits.