Smart BatteryProtect 48V - 100A

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.

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.

The seven segment display will indicate which setting has been chosen.

A special setting for Li-ion batteries

In this mode the Battery Protect can be controlled by the VE.Bus BMS.

Note: the Battery Protect can also be used as a charge interrupter in between a battery charger and a Li-ion battery. See connection diagram in the manual.

Ultra low current consumption

This is important in 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.

Over voltage protection

To prevent damage to sensitive loads due to over voltage, the load is disconnected whenever the DC voltage exceeds 64V.

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 during 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 50mA. The alarm output is typically used to activate abuzzer, LED or relay.

Delayed load disconnect and delayed reconnect

The load will be disconnected 90 seconds after the alarm has been activated. 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.