BMS V2

The Victron Energy BMS V2 is the new generation of battery management system (BMS) designed specifically for Victron Lithium Battery Smart lithium iron phosphate (LiFePO₄) batteries. It monitors and protects each individual cell of the battery.

The BMS V2 protects batteries against:

Overvoltage of each individual cell.Undervoltage of each individual cell.Overheating or undertemperature conditions.It also generates a pre-alarm signal in case of imminent cell undervoltage.

The BMS V2 is compatible with lithium iron phosphate (LiFePO₄) batteries from the Victron Lithium Battery Smart range, available in 12.8 V or 25.6 V.

The BMS V2 input voltage range is 9 to 70 VDC.

Under normal operation, the BMS V2 consumes approximately 10 mA (excluding load disconnection current). In case of low cell voltage, consumption drops to 2 mA, and to 1.50 mA when powered off via the remote on/off terminal.

Yes, the BMS V2 is designed to manage systems with multiple batteries. Batteries can be connected in series, parallel, or series/parallel to form a battery bank.

The maximum number of batteries in a system managed by the BMS V2 is 20.

The BMS V2 can manage a maximum energy storage of 84 kWh in a 12 V system and up to 102 kWh in a 24 V or 48 V system.

The BMS V2 has dimensions (h x w x d) of 23.8 mm x 94.5 mm x 105.5 mm and weighs 120 grams.

The BMS V2 operates within a temperature range of -20 to +50 °C. Maximum allowed humidity is 95 % (no condensation).

Yes, the BMS V2 is equipped with several LED indicators:

Status (blue): Flashes briefly every 10 seconds to indicate normal operation.
Temp or Cell >4 V (red): Lights up when the load disconnect output is low due to overvoltage or cell overheating.
Cell >2.8 V (blue): Lights up when the load disconnect output is high and cell voltages exceed 2.8 V.

The BMS V2 housing has an IP20 protection rating.

The BMS V2 is designed to communicate with Victron inverters or inverter/chargers equipped with VE.Bus communication, such as MultiPlus, Quattro, or Phoenix inverters. It can also connect to a GX device (such as a Cerbo GX), a Digital Multi Control (DMC) panel, or a VE.Bus Smart dongle via the 'Remote panel' port.

No, the VE.Bus BMS V2 is not compatible with Victron Energy inverters or inverter/chargers equipped with small processors labeled 19XXXXX or 20XXXXX. For these devices, it is recommended to use the VE.Bus BMS (first generation) instead of the VE.Bus BMS V2.

Yes, a GX device such as a Cerbo GX can be connected to the BMS V2 via the 'Remote panel' port. The BMS also has a dedicated power output terminal (GX-Power) for a GX device, providing up to 1A.

In case of undervoltage in the cells, the BMS V2 generates a pre-alarm signal. It then disables inversion in VE.Bus devices and cuts other loads via the « Load Disconnect » terminal to protect the battery from excessive discharge.

In case of overvoltage, low temperature, or cell overheating, the BMS V2 disconnects the VE.Bus devices, VE.Direct and VE.Can solar chargers via a GX device, as well as other chargers via the "Charge Disconnect" terminal to prevent battery damage.

Lithium Battery Smart batteries connect to the BMS V2 via two BMS cables with M8 circular connectors. In systems with multiple batteries, the BMS cables of each battery are connected in series (daisy-chained), with the first and last BMS cables connected to the BMS V2.

The BMS V2 connects to MultiPlus, Quattro products or Victron inverters via the 'MultiPlus/Quattro' port using a standard UTP RJ45 cable.

Victron Energy's BMS V2 is a next-generation Battery Management System (BMS) designed to protect and manage Victron Lithium Battery Smart lithium iron phosphate (LiFePO₄) batteries.

Its main functions include:

Individual cell protection against overvoltage, undervoltage, overheating, and low temperature.Monitoring of cell voltage, balancing, and temperature control for Lithium Battery Smart batteries.Generation of a pre-alarm signal to warn of imminent cell undervoltage.Disabling the inverter of VE.Bus devices and cutting other loads via the 'Load Disconnect' terminal in case of cell undervoltage.Disabling charging for VE.Bus devices, VE.Direct and VE.Can solar chargers (via a GX device), as well as other chargers via the 'Charge Disconnect' terminal in case of overvoltage, low temperature, or overheating.

Compatibility with Victron Lithium Battery Smart batteries (available in 12.8 V or 25.6 V), supporting up to 20 batteries in the same system for voltages of 12 V, 24 V, or 48 V.Victron inverters or inverter/chargers equipped with VE.Bus communication (such as MultiPlus and Quattro).GX devices (e.g., Cerbo GX), Digital Multi Control (DMC) panels, or VE.Bus Smart dongles for remote control.It accepts an input voltage range of 9 to 70 VDC.