Victron Energy Battery Protect | 12/24V-65A

The Victron Energy Smart BatteryProtect 12/24V-65A is a Bluetooth-enabled battery protection device that automatically disconnects non-essential DC loads before the battery reaches a damaging depth of discharge, while also serving as a programmable system on/off switch.

Designed for 12V and 24V systems with automatic voltage detection, the Smart BatteryProtect 65A safeguards lead-acid and lithium battery banks in marine, RV, off-grid, and mobile applications by monitoring battery voltage and executing delayed, configurable load disconnects and reconnects to extend battery life and prevent deep discharge damage.

With its compact form factor, ultra-low current consumption, and ignition-proof MOSFET switching, the Smart BatteryProtect 65A integrates cleanly into a wide range of DC load management and battery protection schemes.

Key Features:

• Automatic 12/24V Detection — Detects system voltage automatically on first power-up; no manual voltage selection required, simplifying installation in both 12V and 24V systems
• Bluetooth Programming via VictronConnect — Full engage and disengage threshold configuration via the VictronConnect app on Apple and Android devices; alternatively, nine predefined engage/disengage levels can be set manually using the programming pin without a smartphone; Bluetooth can be disabled if required
• Li-ion Battery Support with VE.Bus BMS Control — Dedicated Li-ion mode allows the Smart BatteryProtect to be directly controlled by the Victron VE.Bus BMS for integrated lithium battery system management; can also be wired as a charge interrupter between a battery charger and a Li-ion battery
• Delayed Load Disconnect and Reconnect — Load disconnects 90 seconds after battery voltage drops below the preset threshold, preventing nuisance disconnects from brief engine cranking or transient voltage dips; reconnects 30 seconds after voltage recovers above the preset reconnect level
• Delayed Alarm Output — Open collector alarm output activates after battery voltage remains below the disconnect threshold for more than 12 seconds, avoiding false alarms during engine starting; supports buzzers, LEDs, or relays up to 50mA; short circuit proof
• Over-Voltage Load Protection — Automatically disconnects the load if DC voltage exceeds 16.3V (12V systems) or 32.6V (24V systems), protecting sensitive connected loads from voltage spikes and alternator surges

The Smart BatteryProtect 65A's MOSFET-based switching architecture eliminates mechanical relays entirely, making it ignition proof with no sparks at the terminals during switching events — an important safety characteristic in marine and RV environments where fuel vapors may be present. Ultra-low current consumption (1.4mA BLE on, 0.9mA at low voltage shutdown) makes this device well-suited for lithium battery systems where parasitic draw after a low-voltage shutdown must be kept to an absolute minimum. Default disconnect and reconnect thresholds are 10.5V/12V for 12V systems and 21V/24V for 24V systems, with full custom threshold configuration available via VictronConnect.

The 65A model uses M6 terminal connections and is the most compact of the Smart BatteryProtect range, suited for smaller DC load circuits or auxiliary load protection in systems where a full 100A or 220A device is unnecessary. It operates across a wide -40°C to +40°C temperature range at full load, with load capacity derated to 60% of nominal at 50°C. The on/off input terminal allows the Smart BatteryProtect to function as a remote-controlled system switch, enabling clean shutdown and startup sequencing when integrated with a battery management system, ignition switch, or remote panel.

Technical Specifications: