BMS Victron Energy VE.Bus BMS NG, Bluetooth, IP20

VE.Bus BMS NG - Management system for Lithium NG batteries

The VE.Bus BMS NG is a battery management system for Victron Lithium NG batteries, intended for systems with Victron inverters or inverter/chargers using VE.Bus communication. It protects the cells against overvoltage, undervoltage and extreme temperatures and provides centralised monitoring via Bluetooth in VictronConnect, without requiring a separate SmartShunt.

Main features:

• Compatible batteries: Lithium NG, not Lithium Battery Smart
• Bank configurations: 12, 24 or 48 V, in series and/or in parallel
• Supply voltage: 9-70 V DC
• Connectivity: Bluetooth, VictronConnect, 2 VE.Bus RJ45 ports
• Control outputs: load disconnect and charge disconnect, pre-alarm at least 30 s in advance
• Control panel port: GX device, Digital Multi Control or VE.Bus Smart dongle

The VE.Bus BMS NG is a complete battery management system (BMS) for Victron Lithium NG batteries (not compatible with Lithium Battery Smart batteries), designed for systems with Victron inverters or inverter/chargers that use VE.Bus communication. It monitors and protects the batteries against overvoltage and undervoltage of any individual cell, as well as against overheating and undercooling conditions.

Thanks to the built-in Bluetooth function, the BMS provides centralised monitoring through VictronConnect. The BMS obtains all key parameters, including voltage, current, state of charge and individual cell data, directly from the battery, eliminating the need for a separate SmartShunt.

Lithium NG batteries can be configured in series, in parallel or in a combination of the two, supporting 12 V, 24 V and 48 V systems. A 12 V or 24 V battery bank can contain a maximum of 50 batteries, and a 48 V battery bank a maximum of 25 batteries, giving a storage capacity of up to 192 kWh (12 V), 384 kWh (24 V) and 128 kWh (48 V). Several Lynx Smart BMS units can be connected in parallel to extend capacity and provide redundancy.

Key features:

• Bluetooth Smart: the VE.Bus BMS NG includes Bluetooth Smart for wireless configuration, monitoring and firmware updates via the VictronConnect app. Instant Readout displays key data such as battery state of charge (SoC), battery temperature, warnings and alarms directly in the device list, without needing to connect.
• Load disconnect output: controls the remote on/off input of a BatteryProtect, inverter, DC-DC converter or other loads with a remote on/off function to prevent deep discharge.
• Charge disconnect output: controls the remote on/off port of chargers, such as the Smart IP43 charger, a Cyrix-Li-Charge relay, a Cyrix-Li-ct battery combiner or a BatteryProtect, to prevent overvoltage.
• Pre-alarm output: provides an early warning in case of low battery voltage before the loads are disconnected. It can drive a relay, an LED or a buzzer.
• Remote on/off control: allows external control of the load disconnect and charge disconnect outputs.
• LED indicators: includes a blue LED for the Bluetooth status and a red LED for warnings and errors.

Technical specifications