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Victron Energy SmallBMS NG - BMS400100300

The SmallBMS NG is an all-in-one Battery Management System (BMS) designed for Victron Lithium NG batteries.

LED Status Indicators Remote on/off control Dimensions: 106 x 42 x 23 mm Weight: 0.1kg
£76.00
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SKU: BMS400100300
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Product Details

The SmallBMS NG is an all-in-one Battery Management System (BMS) designed for Victron Lithium NG batteries(not compatible with Lithium Battery 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 don’t require integration with Victron inverter/chargers. It provides essential lithium battery protection without the added complexity of VE.Bus communication and 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 there’s 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.

Key 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.
Product Specifications

System Compatibility & Sizing

  • Battery Compatibility: Victron Lithium NG batteries (12.8V, 25.6V, 51.2V).
  • System Voltages: 12V, 24V, or 48V.
  • Battery Bank Sizing (12V & 24V): Supports up to 50 batteries (Max 192 kWh for 12V; 384 kWh for 24V).
  • Battery Bank Sizing (48V): Supports up to 25 batteries (Max 128 kWh).
  • System Connection: Non-integrated; all loads and chargers must be connected directly to the battery. The BMS manages the system via "load disconnect" and "charge disconnect" signal terminals.

Protection & Control

  • Cell Protection: Monitoring and balancing of individual cells via M8 circular connector cables.
  • Load Disconnect Terminal: High/free floating, 1 A. Triggers in case of cell undervoltage.
  • Charge Disconnect Terminal: High/free floating, 10 mA. Triggers in case of cell overvoltage or temperature alarms.
  • Pre-alarm Terminal: Free floating/high, 1 A. Provides an early warning signal before a load disconnect occurs.
  • Remote On/Off Terminal: Yes; allows for manual or system-driven toggling of the BMS state.

Connectivity & Monitoring

  • Bluetooth Smart: Built-in; allows for monitoring, operation, and configuration via the VictronConnect app.
  • Instant Readout: Key battery data is displayed via Bluetooth without the need for pairing.
  • Battery Monitoring: Integrated through the batteries themselves; Lithium NG batteries feature internal shunts and send SoC, voltage, cell voltage, and temperature data directly to the BMS.
  • Data Communication: No (Manual wiring for disconnects required).
  • DVCC Control: No.

Physical Specifications

  • Dimensions (h x w x d): 106 x 42 x 23 mm
  • Unit Weight: 0.1 kg
  • Protection Category: IP20
  • Remote Control: Supports switching via the physical terminal or through the VictronConnect app.

System Design RecommendationsThe SmallBMS NG is specifically recommended for 12V, 24V, or 48V systems that do not utilize Victron VE.Bus inverter/chargers. It provides a compact and cost-effective management solution for systems using DC loads and independent chargers.


Shipping & Collection

Tracked Delivery (Currently 1-3 business days):

  • Free over £250.
  • £5.99 for orders under £250.
  • £5.99 for orders under £50.

Next Business Day Delivery:

  • £15 Flat Rate.

Collection:

  • Free to collect from our warehouse.

Pre-Order:

  • 5-10 Business Days delivery unless otherwise stated.

Shipping Policy

Datasheets
Victron Energy SmallBMS NG - BMS400100300 - Manual
Victron Energy SmallBMS NG - BMS400100300 - Data Sheet
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