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.

The 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 continuous voltage exceeds 16V (for a 12V system) or 32V (for a 24V system), thereby safeguarding sensitive equipment.

The BatteryProtect has an ultra-low current draw. In operating mode (on), it draws 1.5 mA. When the device is off or during a low-voltage cut-off, its draw drops to just 0.6 mA. This low draw is particularly critical for Li-ion battery-powered systems, 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 spark generation when switching loads. This feature is a significant safety advantage, 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 amperes. Do not exceed this value to ensure proper operation and longevity of the device.

Yes, the BatteryProtect 12/24V 65A can handle current spikes. 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 activated if the battery voltage drops below the pre-set disconnect level for more than 12 seconds. This delay prevents engine start-up from triggering 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 (e.g., after engine start), the load will not be disconnected. Reconnection: The load is reconnected 30 seconds after the battery voltage has risen above the pre-set reconnection voltage.

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

During installation, several precautions must be strictly followed:

Select the appropriate cable size and length to match the load. A properly sized fuse must be inserted in the cable between the battery and the BatteryProtect, in compliance with local regulations. Ensure correct orientation: current must flow only from the IN terminal (battery) to the OUT terminal (load). Verify that 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 vehicle’s chassis). No other equipment may share this wire. The GND cable must be protected accordingly; a 300 mA fuse is sufficient.

For the BatteryProtect 65A, the recommended tightening 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 has a special setting for them. In Li-ion mode, it can be directly controlled 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 the protection.

No, connecting inverters or charger/inverters directly to the BatteryProtect DC inputs is strictly prohibited. Reverse current could flow and damage the device. If you need to control an inverter or charger/inverter via a BatteryProtect, use the BatteryProtect’s remote control port to manage the device.

Yes, the BatteryProtect can also be used as a charging 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 a single direction, from the IN terminal to the OUT terminal. It can be used for current flowing to a load or current coming from a charger, but not both simultaneously. It is not designed for reverse currents from charging sources.