In the touring vehicle, the on-board battery is primarily charged when the vehicle is stationary (charger, solar, fuel cell, etc.). If the vehicle is unused for a
unused for a longer period of time, the starter battery will continue to discharge due to battery disconnection. However, many vehicles also put a strain on the starter battery during the season, as some consumers (radio, multimedia, parking lights, alarm system, etc.) are always connected to it. The standby chargers ensure that the starter battery is also charged - depending on the state of charge of the on-board battery. For pure battery maintenance, the 0 A - 2 A variant is usually sufficient. However, we generally recommend the 0 A - 5 A variant, as modern LiFePO4 (lithium-um) batteries can also be connected here as an on-board battery.