Victron SmallBMS NG Battery Management System BMS400100300
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Description
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, or other loads.
- Charge disconnect output: Prevents overvoltage by controlling the remote on/off port of chargers.
- Pre-alarm output: Provides early warning for low battery voltage.
- Remote on/off control: Allows external control of load and charge disconnect outputs.
- LED indicators: Includes blue LED for Bluetooth status and red LED for warnings.
Specifications
| Brand | Victron |
| EAN | 8719076063537 |
| Type | Power Product |
| Sub-Type | other |
| Custom Bundle | No |
| Battery communication terminals | Terminals with M8 circular connectors |
| DC connector battery minus | Screw terminals |
| Power supply cable and fuse (not supplied) | Recommended fuse size 0.3 A - 2.5 (dependent on devices connected to Load disconnect and pre-alarm output) |
| Input/output terminals | Screw terminals |
| Item Width | 42 mm |
| Weight | 0.1 kg |
| Protection category | IP20 |
| Material | ABS |
| Item Height | 106 mm |
| Item Depth | 23 mm |
| Colour | Matt black with a blue sticker |
| Automotive | ECE R10-6 |
| Emission | EN-IEC 61000-6-3,EN 55014-1 |
| Safety | EN 60950 |
| Immunity | EN-IEC 61000-6-1, EN-IEC 61000-6-2,EN 55014-2 |
| Load disconnect output source current limit | 1 A |
| Current consumption - remote on | 3 mA |
| Maximum humidity (non-condensing) | 95 % |
| Operating temperature range | [-20, 50] °C |
| Current consumption - remote off | 1.2 mA |
| Current consumption - low cell voltage | 1.2 mA |
| Pre alarm output current rating (not short circuit protected) | 500 mA |
| Pre alarm output (not short circuit proof) | Normally free floating - In case of alarm: output voltage Vbat -0.1 V |
| Load disconnect Output | Normally high (Vbat – 0.1V) |
| Remote terminals | Remote L and Remote H\nUse modes:\n1. ON when the L and H terminal are interconnected\n2. ON when the L terminal is pulled to battery minus (V <3.5 V)\n3. ON when the H terminal is high (2.9 V |
| DC Input operating voltage range | [8, 70] V |
| Charge disconnect output source current limit | 500 mA |
| Charge disconnect output | Normally high (Vbat – 0.1 V) |
| Power Source | Battery |
| Manufacturer Part Number (MPN) | BMS400100300 |