Victron Energy Smart BatteryProtect 12/24V-220A

Technical Specifications

User manual 

Victron Energy Smart BatteryProtect – 12/24V Auto Ranging

Safeguard Your Battery from Over-Discharge and Over-Voltage

The Victron Smart BatteryProtect is designed to disconnect non-essential loads from your battery before it becomes overly discharged—preventing damage and preserving battery life. It also ensures enough power is retained to crank your engine when needed. With Bluetooth-enabled configuration and smart features, it's a critical component in any advanced DC electrical system.

Key Features:

• Automatic Voltage Detection
  Supports both 12V and 24V systems with automatic voltage recognition during initial setup.
• Bluetooth Programming
  Easily set custom engage/disengage voltage thresholds or choose from nine predefined levels using the VictronConnect App or programming pin.
• Real-Time Status Readout
  View alarms, warnings, and device status at a glance through the VictronConnect Device List—even without pairing.
• Ideal for Lithium Batteries
  Features a dedicated setting for use with Li-ion systems and compatibility with VE.Bus BMS for controlled charge/discharge.
• Ultra-Low Standby Power Consumption
  Critical for lithium battery banks, especially after low-voltage cut-off conditions.
• Over-Voltage Protection
  Automatically disconnects the load when voltage exceeds safe limits (16.3V or 32.6V), protecting sensitive electronics.
• MOSFET-Based Switching
  Spark-free, ignition-proof operation thanks to solid-state design—no relays, no arcing.
• Delayed Load Disconnect & Reconnect
  Prevents nuisance cut-offs:
  • Disconnects 90 seconds after voltage drops below threshold
  • Reconnects 30 seconds after voltage rises above threshold
• Programmable Alarm Output
  Sends a signal after 12 seconds of undervoltage to activate LEDs, buzzers, or relays (max 50 mA open collector).

Installation Notes:

• Unidirectional Current Flow
  Current flows from IN → OUT only. For load protection, connect the battery to the IN terminal. For charger protection, connect the charger to IN.
• Use as a Charge Interrupter
  Can be installed between a charger and a Li-ion battery to stop charging when needed (see manual for diagram).

Recommended For:

✔️ RVs, marine, solar systems

✔️ Lithium and AGM battery banks

✔️ Vehicle systems needing programmable low-voltage protection