BatteryProtect 12/24V 65A

The BatteryProtect 12/24V 65A is a battery protection device designed to disconnect non-essential loads before the battery is fully discharged. This prevents battery damage and ensures enough power remains to start the engine. It acts as a switch to protect your battery’s lifespan.

BatteryProtect protects your battery by monitoring its voltage. When the battery voltage drops below a predefined threshold (programmable), it automatically disconnects connected loads. It also provides overvoltage protection, disconnecting the load if the voltage continues to exceed 16V (for a 12V system) or 32V (for a 24V system), thereby protecting sensitive equipment.

The BatteryProtect has an extremely low current draw. In operating mode (on), it consumes 1.5 mA. When the device is off or during a low-voltage cutoff, its draw drops to just 0.6 mA. This low draw is critical for systems powered by Li-ion batteries, especially after a shutdown due to low voltage.

Yes, the BatteryProtect is designed to be spark-resistant (ignition proof). It uses MOSFET switches instead of relays, which eliminates sparking when switching loads. This is an important safety feature, particularly in marine environments or vehicles.

The BatteryProtect 12/24V 65A has an extended operating voltage range from 6 to 35V. It automatically detects the system voltage (12V or 24V) on first power-up.

The BatteryProtect 12/24V 65A can handle a maximum continuous charging current of 65 amps. It is important not to exceed this value to ensure proper operation and longevity of the device.

Yes, the BatteryProtect 12/24V 65A can handle current peaks. It is designed to support a peak current of up to 250 amperes for a maximum duration of 30 seconds. This allows it to manage temporary higher current demands from certain loads at startup.

Yes, the BatteryProtect includes overvoltage protection. To prevent damage to sensitive loads, it disconnects the load whenever the DC voltage exceeds 16V for a 12V system or 32V for a 24V system.

The BatteryProtect alarm output is triggered if the battery voltage drops below the preset disconnect level for more than 12 seconds. This delay prevents engine start-up from activating the alarm unintentionally. The alarm output is an open-collector output protected against short-circuits to the negative rail, with a maximum current of 50 mA. It is typically used to activate an audible alarm, an LED, or a relay.

The BatteryProtect integrates delays for disconnecting and reconnecting the load:

Disconnect: The load is disconnected 90 seconds after the alarm is triggered. If the battery voltage rises above the reconnection threshold during this period (for example, after engine start), the load will not be disconnected.Reconnection: The load is reconnected 30 seconds after the battery voltage has risen above the preset reconnection voltage.

The BatteryProtect must be installed in a well-ventilated area, preferably near the battery (within 50 cm). However, due to possible corrosive gases, it must not be installed directly above the battery.

During installation, several precautions are critical:

Select the correct cable size and length to match the load.A properly sized fuse must be installed in the cable between the battery and BatteryProtect, in compliance with local regulations.Observe correct orientation: current must flow only from the IN terminal (battery) to the OUT terminal (load).Ensure the BatteryProtect is fully programmed before connecting the load output.

The BatteryProtect automatically detects the system voltage (12V or 24V) only once during the first power-up. The selected voltage is then stored. If you reuse the device in a different installation with a different system voltage, you will need to reset this detection via the programming method.

Yes, the BatteryProtect can be controlled remotely. 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) to activate the BatteryProtect.

Use the supplied 1.5 mm² wire for the GND connection. This wire must be connected directly to the battery’s negative terminal (or to the chassis of a vehicle). No other equipment may be connected to this wire. The GND cable must be protected accordingly; a 300 mA fuse is sufficient.

For the BatteryProtect 65A, the recommended torque for the connections is 5 Nm. It is important to respect this torque to ensure a secure and reliable electrical connection.

Yes, the BatteryProtect is compatible with lithium batteries and includes a dedicated setting for them. In Li-ion mode, it can be controlled directly by an external BMS, such as the VE.Bus BMS, where the BatteryProtect acts as a charge switch. The undervoltage thresholds and alarm output of the BatteryProtect are inactive in this mode, as the BMS manages protection.

No, it is strictly forbidden to connect inverters or charger/inverters directly to the DC inputs of the BatteryProtect. Reverse current could flow and damage the device. If you wish to control an inverter or a charger/inverter via a BatteryProtect, you must use the BatteryProtect to control the device via its remote control port.

Yes, the BatteryProtect can also be used as a charge switch between a battery charger and a Li-ion battery. In this case, it must be oriented so that current flows from the IN terminal to the OUT terminal, in accordance with its unidirectional design.

No, the BatteryProtect is a unidirectional device. It is designed to manage current in one direction only, i.e., from the IN terminal to the OUT terminal. It can be used for current to a load or current from a charger, but not both simultaneously. It is not designed for reverse currents from charging sources.