Victron 12/24-65AH battery protector, motorhomes, campers and 4x4 overland.

BatteryProtect
The BatteryProtect feature disconnects non-essential loads from the battery before it is completely discharged (which would damage the battery) or before it runs out of enough charge to start the engine or supply power to your vehicle.

The BatteryProtect is a one-way device. It can only work with current in one direction: either the current going to a load, or the current coming from a charger, but not both at the same time. Also, current can only flow from the Battery terminal to the Load terminal. In case it is used with a load, the battery is connected to the Battery terminal, and in case it is used with a charger, the charger is connected to the Battery terminal.

BatteryProtect disconnects non-essential loads from the battery before it is completely discharged (which
would damage the battery) or before it runs out of enough charge to start the engine.
12/24V self-regulating
BatteryProtect automatically detects system voltage
Easy programming
The BatteryProtect can be set to connect/disconnect at several different voltages.
The seven segment display will indicate which setting has been chosen.
A special configuration 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 charging switch between a battery charger and a
lithium ion battery. See connection diagram in the manual.
Ultra low current consumption
This is important in the case of Li-Ion batteries, especially after a low voltage disconnection.
Please see our Li-Ion battery data sheet and VE.Bus BMS manual for more information.
Overvoltage protection
To prevent damage to delicate devices due to overvoltage, the load is disconnected whenever the
DC voltage exceeds 16 V respectively 32 V.
fire proof
No relays but with MOSFET switches, therefore no sparks.
Delayed alarm output
Alarm output activates if battery voltage drops below preset trip level
for more than 12 seconds. Therefore, when the engine is started the alarm will not be activated. The alarm output is an output
open collector short-circuit proof to the negative (minus) rail, with a maximum current of 50 mA.
Typically, the alarm output is used to activate an acoustic signal, an LED or a relay.
Delayed load disconnection and delayed reconnection
The load will be disconnected 90 seconds after the alarm has been activated. If the battery voltage is
increases again towards the switch-on threshold in this time period (after, for example, the motor
has been started), the load will not be disconnected.
The load will be reconnected 30 seconds after the battery voltage has exceeded the set voltage.
pre-established reconnection.
BatteryProtect BP-65 BP-100 BP-220
Maximum continuous charging current* 65A 100A 220A
Peak current (for 30 seconds) 250A 600A 600A
Working voltage range 6 –35V
Current consumption On: 1.5mA Off or disconnected due to low voltage: 0.6 mA
Alarm output delay 12 seconds
Maximum load on the outlet
50mA alarm (short circuit proof)
Load shedding delay 90 seconds (immediate if activated by VE.Bus BMS)
Load reconnection delay 30 seconds
Default thresholds Disconnection: 10.5V or 21V Connection: 12V or 24V
Working temperature range Full load: -40°C to +40°C (up to 60% of rated load at 50°C)
Electronic IP Protection: IP67 (encapsulated) Connections: IP00
Connection M6 M8 M8
Mounting torque 5 Nm 9 Nm 9 Nm
Weight 0.2 kg. 0.5 lbs 0.5 kg. 0.6lb 0.8kg. 1.8lb
Dimensions (H x W x D) 40 x 48 x 106 mm