BatteryProtect 48V-100A

The primary role of Victron Energy's BatteryProtect 48V-100A is to protect your battery from excessive discharge. It disconnects non-essential loads before the battery is fully depleted, preventing damage and ensuring sufficient energy remains for engine starting or other critical functions.

The BatteryProtect 48V-100A is designed to operate within a DC voltage range from 24V to 64V.

The BatteryProtect 48V-100A can handle a maximum continuous charging current of 100 amperes. It can also withstand a peak current of up to 250 amperes.

Yes, the BatteryProtect 48V-100A includes overvoltage protection. It disconnects the load if the continuous voltage exceeds 64V to prevent potential damage to sensitive equipment.

The BatteryProtect 48V-100A has an ultra-low current consumption:

In active mode: 2 mAIn standby mode or after a low-voltage cut-off: 1.5 mAThis low consumption is particularly advantageous for installations with Li-ion batteries.

No, the BatteryProtect 48V-100A is designed to be "ignition proof" (spark-proof). It uses MOSFET switches instead of relays, which eliminates spark generation during switching.

The device has an alarm output that is activated if the battery voltage drops below the predefined disconnect level for more than 12 seconds. This prevents the alarm from triggering during engine start-up. The output is open-collector type, short-circuit resistant (max. 50 mA), and can be used to control a buzzer, LED, or relay.

The default voltage thresholds for the BatteryProtect 48V-100A are:

Disconnect (Disengage): 42V
Reconnect (Engage): 48V

The dimensions of the BatteryProtect 48V-100A are 62 x 123 x 120 mm (height x width x depth). Its weight is 0.8 kg.

The BatteryProtect 48V-100A can operate at full load within a temperature range of -40°C to +40°C. It can also operate down to 60% of its rated load at 50°C.

The BatteryProtect 48V-100A electronics feature IP67 protection (potting), meaning they are protected against temporary immersion. Connections have IP00 protection.

The BatteryProtect must be installed in a well-ventilated area, preferably close to the battery (maximum 50 cm), but not directly above it due to possible corrosive gases. It is also important to select the correct cable size and length to avoid voltage drops.

Yes, a correctly sized fuse must be inserted in the cable between the battery and the BatteryProtect, in accordance with local regulations. The ground cable (GND) must also be protected by a fuse, a 300 mA fuse being sufficient.

The ground cable (GND) provided (1.5mm²) must be connected directly to the negative terminal of the battery (or to the vehicle chassis). No other equipment may be connected to this cable.

No, it is strictly forbidden to directly connect the DC inputs of inverters or chargers to the BatteryProtect, as reverse currents could flow and damage the device. To control an inverter or charger, you must use the BatteryProtect to command their remote control port.

The BatteryProtect 48V-100A is programmed via the PROG pin to the GND pin. A 7-segment LED display shows the selected setting, allowing you to choose from multiple engagement and disconnection voltage thresholds.

Yes, a remote on/off switch can be connected between the two pins of the 2-pin remote terminal. Alternatively, the terminal labeled REMOTE can be pulled high (to the battery positive).

Yes, the BatteryProtect 48V-100A has a specific setting for Li-ion batteries. This feature allows direct control via an external battery management system (BMS), such as the VE.Bus BMS.

In Li-ion mode, the BatteryProtect can be controlled by an external BMS (such as the VE.Bus BMS). If the charge disconnect output of a BMS is connected to the REMOTE pin and the signal goes floating, charging is immediately disconnected. The undervoltage thresholds and the BatteryProtect alarm output are inactive in this mode.

No, the BatteryProtect 48V-100A is a unidirectional device. It is designed to allow current to flow only from the IN terminal to the OUT terminal. It is not designed to handle reverse currents from charging sources, and doing so could damage the device.