Economical and effective protection for your Victron Lithium NG batteries
SmallBMS NG is a modern, compact solution of the type Battery Management System (BMS), designed specifically for the safety and optimal operation of Victron Energy lithium iron phosphate (LiFePO ) batteries. Ideal for users who do not require complex VE.Bus systems such as MultiPlus or Quattro.
Main advantages:
Full battery protection
- Automatic charge and load disconnection
- Early warnings at low voltage
- Protection against deep discharge and overcharge
Built-in Bluetooth
- Wireless configuration and monitoring in the app VictronConnect
- Intuitive operation - no need to use additional components
Simple integration
- Works independently - without the need to use VE.Bus
- It even supports 50 batteries (12/24V) or 25 batteries (48V) - to 384 kWh
System functions:
Load disconnect output
Manages remote turning on/off of devices such as:
- BatteryProtect
- DC-AC converters
- DC-DC converters
Prevents excessive battery discharge.
Charge Disconnect Output
Controls the operation of chargers and relays, e.g.:
- Smart IP43 Charger
- Cyrix-Li-Charge
- BatteryProtect
Protects against overvoltage in the system.
Compatibility and applications
- Batteries Victron Lithium NG
- Off-grid solar installations
- Mobile systems (campers, boats, trailers)
- Energy storage systems
Additional information:
- LED indicators signaling the system status
- Opportunity to work autonomous and maintenance-free
- Simple installation - perfect even for inexperienced users
Technical specifications:
General parameters
- Model: smallBMS NG
- Operating voltage (Vbat): 8 - 70 V DC
- Housing material: ABS
- Color: Matte black
- Degree of protection: IP20
- Operating temperature: from -20°C to +50°C
- Humidity: up to 95% (non-condensing)
- Dimensions (H x W x D): 106 × 42 × 23 mm
- Libra: 0.1 kg
Power supply and current consumption
- Recommended fuse (external): 0.3A - 2.5A
- Power consumption in operating mode: 3 mA
- Current consumption at low cell voltage: 1.2 mA
- Current consumption in remote shutdown mode: 1.2 mA
Control outputs
Load disconnect output
- Default high: Vbat - 0.1V
- Max source current: 1 A
- Leakage current: 0 A
Charge Disconnect Output
- Default high: Vbat - 0.1V
- Max source current: 500 mA
- Leakage current: 0 A
Pre-alarm output
- Default: low (floating)
- In case of alarm: Vbat - 0.1 V
- Max output current: 500 mA
Remote control (Remote on/off)
- Connectors: Remote L and Remote H
- Modes of operation:
- Enabled when Remote L and H are connected
- Enabled when Remote L is connected to negative (V < 3.5 V)
- On when voltage on H: 2.9V - Vbat
- Disabled in other cases
Standards and certificates
- Security: EN 60950
- Issue: EN 61000-6-3, EN 55014-1
- Resistance: EN 61000-6-2, EN 61000-6-1, EN 55014-2
- Automotive standards: Regulation UN/ECE-R10 Rev.4