Victron Energy VE.Bus BMS V2 Battery Management System (BMS)

The VE.Bus BMS V2 is a Battery Management System (BMS) engineered for Victron’s 12.8V & 25.6V Lithium Battery Smart batteries (LiFePO4 or LFP). It offers direct communication with Victron Multiplus, Quattro and other inverter models with VE.Bus communication ports. Its primary function is to monitor and protect your batteries against potential risks such as overvoltage, undervoltage, and extreme temperature fluctuations.

The VE.Bus BMS V2 performs several critical functions to keep your lithium batteries in optimal performance condition:
• It emits a pre-alarm signal to forewarn of an impending cell undervoltage scenario.
• In the event of a cell undervoltage situation, it deactivates inverting in VE.Bus inverters or inverter/chargers via VE.Bus, and also disengages other loads via the ‘Load Disconnect’ terminal.
• If there’s a cell overvoltage, under temperature, or over temperature condition, it halts charging in VE.Bus inverters or inverter/chargers via VE.Bus, and similarly halts other chargers through the ‘Charge Disconnect’ terminal.
• It offers remote on/off terminals for convenient control.
• It provides the ability to deactivate VE.Direct and VE.Can solar chargers via a GX device.
• It enables control of the VE.Bus inverter/charger from various devices like the Digital Multi Control, the VE.Bus Smart dongle, or a GX device.
• It features auxiliary power input and output terminals, ensuring continuous power to a GX device even during system shutdowns.

About Victron Battery Management System (BMS)

Victron’s advanced Battery Management System (BMS) are engineered specifically for their Lithium Smart Batteries, 12.8V and 25.6V models. The BMS establishes direct communication with the lithium battery through the battery’s M8 circular connector cables, it protects the battery cells against potential hazards such as overvoltage, undervoltage, and extreme temperatures. Through its intuitive “load disconnect” and “charge disconnect” terminals, the BMS proactively regulates power flow, mitigating risks and safeguarding battery longevity. A BMS can monitor up to 20 batteries without compromising on reliability, making it an indispensable component for any Victron lithium battery system.

Important:
Always use a Victron BMS with your Victron lithium battery bank. It is strongly advised against using third-party BMS devices with Victron Battery Smart batteries.
System Compatibility:
• The SmallBMS, VE.Bus BMS V2, and Lynx Smart BMS work with 12V, 24V, or 48V systems. Other BMS models are compatible only with 12V systems.
Connection Requirements:
• The SmallBMS and VE.Bus BMS V2 need all loads and chargers to connect directly to the battery. They’ll turn them off if there’s a voltage or temperature issue.
• The Lynx Smart BMS has a safety switch that disconnects the system from the battery in emergencies. It also acts as an on/off switch.
• The Smart BMS 12/200 has a separate output for connecting both loads and chargers. It will disconnect if there’s an issue.
Alternator Protection:
• Some models have a dedicated input for alternators. It regulates the alternator’s supply and prevents reverse current.
Remote Control:
• All models have a remote on/off terminal. Smart BMS models can be controlled via Bluetooth using the VictronConnect app.
Battery Monitoring:
• The Lynx Smart BMS includes a comprehensive built-in battery monitor.
Communication Options:
• The VE.Bus BMS V2 can control inverters or inverter/chargers directly.
• Lynx Smart BMS can communicate with compatible devices via a GX device.
• It can also monitor up to 4 Lynx distributor modules.
Optional Accessories:
• Accessories include cables, adapters, and the VictronConnect app for Smart BMS modules.
System Design Recommendations:
• Choose SmallBMS for systems without inverter/chargers.
• Use VE.Bus BMS V2 for systems with inverter/chargers and a GX device.
• Opt for Lynx Smart BMS for digital integration needs, especially in yachts or recreational vehicles.