Disconnect relay to protect the battery from discharging

The use of a Isolating relay is recommended for two main reasons: Firstly, it enables the charging of a Battery during the journey and also protects the starter battery from discharging when the engine is switched off. In doing so, a Isolating relay two Batteries only when the engine is running and the alternator is charging at the same time. In addition, a Isolating relay This is necessary if two different battery types have been installed in the vehicle's on-board network, for example lithium (LTO or LiFePO4) and a lead AGM battery. As different battery types have equally different open-circuit voltages, this would lead to mutual discharge. With the help of a Isolating relay this effect can be prevented..