Protects the battery against excessive discharge and can be used as a system on/off switch The Smart 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 on/off input can be used as a system on/off switch.
12/24V auto-ranging The Smart BatteryProtect automatically detects system voltage one time only.
Bluetooth: programming made easy When using Bluetooth to program the Smart BatteryProtect any required engage/disengage levels can be set.
Alternatively, one of nine predefined engage/disengage levels can be set with the programming pin (see manual).
If required, Bluetooth can be disabled.
A special setting for Li-ion batteries In this mode, the BatteryProtect can be controlled by the VE. Bus BMS.
Note: the BatteryProtect can also be used as a charge interrupter in between a battery charger and a Li-ion battery. See the connection diagram in the manual.
Ultra-low current consumption
This is important in the case of Li-ion batteries, especially after low voltage shutdown.
Please see our Li-ion battery datasheet and the VE. Bus BMS manual for more information.
Overvoltage protection To prevent damage to sensitive loads due to over-voltage, the load is disconnected whenever the DC voltage exceeds 16.3V respectively 32.6V.
Ignition proof No relays but MOSFET switches, and therefore no sparks.
Delayed alarm output The alarm output is activated if the battery voltage drops below the preset disconnect level for more than 12 seconds.
Starting the engine will therefore not activate the alarm. The alarm output is a short circuit proof open collector output to the
negative (minus) rail, max. current 50 mA. The alarm output is typically used to activate a buzzer, LED, or relay.
Delayed load disconnect and delayed reconnect The load will be disconnected 90 seconds after the battery voltage drops below the preset level. If the battery voltage
increases again to the connect threshold within this time period (after the engine has been started for example), the load will not be disconnected.
The load will be reconnected 30 seconds after the battery voltage has increased to more than the preset reconnect voltage.
