The Victron Energy Smart BatteryProtect 12/24V-220A 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 220A 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.

As the highest-capacity model in the Smart BatteryProtect 12/24V range, the 220A is suited for large DC load circuits in high-current systems where the 65A and 100A models would be undersized.

Key Features:

• 220A Continuous Load Protection for 12/24V Systems — Supports up to 220A continuous load current and 600A peak for 30 seconds, covering the DC load management needs of large 12V and 24V marine, off-grid, and mobile power installations
• 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; disconnect is immediate if triggered by the VE.Bus BMS
• 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

The Smart BatteryProtect 220A'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 220A model uses M8 terminal connections shared with the 100A model, and includes a connector with a pre-assembled DC negative cable included in the box. Its larger housing — the biggest in the 12/24V Smart BatteryProtect range — accommodates the thermal management demands of 220A continuous operation while maintaining the same operating temperature range as smaller models. 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 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: