1. Isolation: under normal circumstances, cut off the connection between the main battery and the auxiliary battery to ensure that there is no internal friction between the two batteries and extend the service life of the battery. 2. Protection: when starting, the positive and secondary batteries are automatically connected to ensure sufficient current to start the vehicle, effectively reducing the starting voltage of the vehicle
If the main battery is insufficient, the vehicle can also be started.
3. Control: automatically detect voltage and implement protection function. After starting, when the voltage of the secondary battery is insufficient, charge and maintain it.
4. Additional intelligent power borrowing function
When it is necessary to use high-power electrical appliances, press the "emergency button" to connect the main and auxiliary batteries in the manual mode and borrow electricity from the auxiliary batteries.