Description

Optimize and Protect Your Power System with the Victron Energy VE.Bus BMS NG Battery Management Module
The Victron Energy VE.Bus BMS NG stands as the intelligent and essential guardian for your high-performance Victron Lithium Battery Smart (LiFePO4) system. Engineered for absolute reliability, this advanced battery management system is the critical communication hub that seamlessly integrates your lithium batteries with the powerful Victron VE.Bus ecosystem, including MultiPlus and Quattro inverter/chargers. It is designed not just to manage, but to actively protect and extend the life of your valuable battery investment, ensuring safe, efficient, and uninterrupted power in the most demanding applications, from marine and RV to off-grid energy installations.
The primary role of the VE.Bus BMS NG is to prevent battery damage by monitoring individual cell voltages and temperatures. It communicates this vital data to the connected VE.Bus devices, instructing them to reduce or stop charging/discharging before a critical threshold is reached. This pre-emptive action prevents cell under-voltage, over-voltage, and over-temperature conditions, which are the main causes of premature lithium battery degradation.
Key Benefits:
* Seamless System Integration: Communicates directly over the VE.Bus protocol, creating a unified and intelligent power system with MultiPlus and Quattro units for unparalleled control and performance.
* Ultimate Battery Protection: Safeguards your expensive Victron Lithium Battery Smart modules by preventing deep discharge and overcharging, dramatically increasing their operational lifespan and safety.
* Enhanced System Reliability: Features a pre-alarm output to provide an early warning before a full disconnect, allowing for corrective action or the shutdown of non-essential loads.
* Intelligent Load and Charge Control: Provides dedicated outputs to manage external loads and chargers via Victron Cyrix relays, ensuring the entire system respects the battery´s state of charge.
* Automated Generator Control: The built-in remote on/off terminals can be configured to automatically start and stop a generator, providing an additional layer of autonomy and power security for your system.
Main Features:
* Direct and robust communication with Victron MultiPlus and Quattro inverter/chargers via the VE.Bus interface.
* Dedicated “Load Disconnect” output to protect the battery from over-discharge by shutting down non-critical loads.
* Separate “Charge Disconnect” output to prevent overcharging by controlling chargers, such as solar chargers (via a Cyrix-Li-Charge) or alternators.
* Pre-alarm contact that activates before a system shutdown, ideal for triggering visual or audible alerts.
* Remote on/off terminals that allow you to turn the entire VE.Bus system on or off with a single switch or to facilitate auto-generator start/stop functionality.
* Auxiliary power input ensures the BMS remains powered to allow for system recovery even if the main batteries have been shut down.
The VE.Bus BMS NG is one of the core modules in a sophisticated and modular Victron Energy setup, enabling you to build scalable and robust power solutions. It orchestrates the interplay between the energy storage modules (the batteries) and the power conversion modules (the inverters/chargers), ensuring they operate in perfect harmony.
Technical Specifications:
* Input Voltage Range: 9 – 70 VDC
* Supported Batteries: Victron Lithium Battery Smart 12.8V & 25.6V (LiFePO4)
* Communication Port: VE.Bus (RJ45 sockets, 2x)
* Current Draw (Normal Operation): < 15mA (excluding VE.Bus device power)
* Load Disconnect Output: Controls a Cyrix-Li-Load relay or equivalent
* Charge Disconnect Output: Controls a Cyrix-Li-Charge relay or equivalent
* Pre-alarm Output: Potential-free contact, rated for 1A at 60VDC
* Operating Temperature Range: -20 to +50°C (-4 to 122°F)