Victron Energy SmallBMS NG Battery Management System for Lithium NG Batteries

SmallBMS NG

The SmallBMS NG is an all-in-one Battery Management System (BMS) designed for Victron Lithium NG batteries (not compatible with lithium smart batteries). It monitors and protects the batteries by managing charge and load disconnects and providing pre-alarms for low battery voltage.

The SmallBMS NG is a straightforward and cost-effective alternative to the VE.Bus BMS NG for applications that dont require integration with Victron inverter/chargers. It provides essential lithium battery protection without the added complexity of VE.Bus communication is therefore not suitable for use with VE.Bus inverter/chargers such as MultiPlus and Quattro.

With built-in Bluetooth, it connects directly to all lithium NG batteries in the system for central monitoring via VictronConnect. It also receives current and state of charge data directly from the batteries, so theres no need for a separate SmartShunt.

The lithium NG batteries can be configured in series, parallel, or a combination of both, supporting 12V, 24V, and 48V systems. A maximum of 50 batteries can be used in 12V or 24V banks, and 25 batteries in 48V banks, enabling up to 192 kWh (12V), 384 kWh (24V), and 128 kWh (48V) of storage. Multiple Lynx Smart BMS units can be paralleled to expand capacity and ensure redundancy.

Features:

• Load disconnect output: Controls the remote on/off input of a BatteryProtect, inverter, DC-DC converter, or other loads with remote on/off functionality 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 early warning for low battery voltage before disconnecting loads. Can drive a relay, LED, or buzzer.


• Remote on/off control: Allows external control of both load and charge disconnect outputs.


• LED indicators: Includes a blue LED for Bluetooth status and a red LED for warnings and errors.

The Victron Energy SmallBMS NG is an all-in-one battery management system designed specifically for Victron Lithium NG batteries, providing essential protection and monitoring without the complexity of VE.Bus communication. It helps ensure safe operation by managing charge and load disconnects, preventing overvoltage and deep discharge scenarios. The system is suitable for 12V, 24V, and 48V battery configurations, supporting series and parallel arrangements with up to 50 batteries in 12V or 24V banks and 25 batteries in 48V banks, enabling substantial energy storage capacity. The SmallBMS NG features integrated Bluetooth connectivity, allowing for seamless system monitoring through the VictronConnect app, as it receives real-time data directly from the batteries, including current and state of charge, eliminating the need for additional shunt devices. This makes setup and ongoing management straightforward and cost-effective for various applications, from small off-grid systems to larger energy storage solutions. It is compatible with a range of loads and chargers, offering dedicated load and charge disconnect outputs that can be remotely controlled to prevent battery damage. The pre-alarm output provides early warnings for low voltage levels, giving users time to intervene before critical events occur. Equipped with LED indicators for Bluetooth status and error alerts, the SmallBMS NG ensures transparent operation and quick diagnostics. Designed to be a reliable component in lithium battery systems, the SmallBMS NG offers a practical solution for users who need straightforward battery protection without integrating with Victron inverter/chargers. For detailed installation and operation instructions, refer to the owner’s manual available online.

Features:

• Load disconnect output controls remote on/off functions for loads like inverters and DC-DC converters to prevent deep discharge.

• Charge disconnect output manages remote on/off for chargers to avoid overvoltage conditions.

• Pre-alarm output provides early warning signals for low battery voltage, capable of driving relays, LEDs, or buzzers.

• Remote on/off control allows external management of load and charge disconnects for added flexibility.

• LED indicators display Bluetooth connectivity status and alert warnings or errors for quick system diagnostics.