The BatteryProtect disconnects the battery from non-essential loads before it is completely discharged (which would damage the battery) or before it has insufficient power left to crank the engine.
The BatteryProtect is a uni-directional device. It can only deal with current in one direction, so either current to a load, or current from a charger, but not both currents at the same time. In addition to this, current only can only flow from the Battery terminal to the Load terminal. In case of use with a load, the battery connects to the Battery terminal, and in case of use with a charger, the charger connects to the Battery terminal.
By using Bluetooth to program the Smart BatteryProtect, you can set all required on / off thresholds. Alternatively, one of nine pre-set on / off thresholds can be set using the programming pin (see manual).
If necessary, the Bluetooth function can be switched off.