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:
| Victron Specifications | |
| DC Input Operating Voltage Range | [8, 70] V |
| Current Consumption Rem On | 3 mA |
| Current Consumption Low Cell | 1.2 mA |
| Current Consumption Rem Off | 1.2 mA |
| Load Disconnect Output Source | 1 A |
| Charge Disconnect Output Source | 500 mA |
| Pre Alarm Output | Normally free floating - In case of alarm: output voltage Vbat -0.1 V |
| Pre Alarm Current Rating | 500 mA |
| Remote Terminals | Remote L and Remote H Use modes: 1. ON when the L and H terminal are interconnected 2. ON when the L terminal is pulled to battery minus (V <3.5 V) 3. ON when the H terminal is high (2.9 V <VH <Vbat) 4. OFF in all other conditions |
| Max Humidity | 95 % |
| Battery Minus Connection | Screw terminals |
| Battery Communication Terminals | Terminals with M8 circular connectors |
| Input Output Terminals | Screw terminals |
| Power Supply Cable | Recommended fuse size 0.3 A - 2.5 (dependent on devices connected to Load disconnect and pre-alarm output) |
| Material | ABS |
| Colour | Matt black with a blue sticker |
| Protection Category | IP20 |
| Weight | 0.1 kg |
| Height | 106 mm |
| Width | 42 mm |
| Depth | 23 mm |
| Safety | EN 60950 |
| Emission | EN-IEC 61000-6-3,EN 55014-1 |
| Immunity | EN-IEC 61000-6-1, EN-IEC 61000-6-2,EN 55014-2 |
| Automotive | ECE R10-6 |
| Manufacturer Warranty | |
| Standard Warranty: | 5 years (5 years extension to 10 years for additional 10% fee - contact us for a quote) |
| Warranty Exceptions: | Lead acid batteries 2 years Lithium batteries 3 years |