Victron Energy Battery Management Systems for Lithium NG Batteries
Overview
Feature highlights common to all models:
- Designed specifically for use with Victron Lithium NG batteries (12.8 V, 25.6 V, 51.2 V).
- Direct communication with the battery via M8 circular connector cables.
- Cell protection: disconnects loads or charge sources via "load disconnect" and "charge disconnect" terminals in case of overvoltage, undervoltage, or abnormal temperature.
- Battery bank sizing: Up to 50 batteries in 12V or 24V systems (max. 192 kWh and 384 kWh respectively). Up to 25 batteries in 48V systems (max. 128 kWh).
System Voltages:
- All models support 12, 24, and 48 V systems.
System connection:
- SmallBMS NG and VE.Bus BMS NG: all loads and chargers must be directly connected to the battery. The BMS disconnects them via "load" and "charge disconnect" outputs in case of an alarm.
- Lynx Smart BMS NG: includes a 500 A or 1000 A safety contactor that disconnects the full system from the battery in case of an alarm. Can also act as the system's main on/off switch.
Alternator:
- Lynx Smart BMS NG includes ATC mode – no additional alternator protection required.
Pre-alarm options:
- Available on all models.
Remote on/off options:
- All models feature a remote on/off terminal.
- Can also be switched on/off via Bluetooth and VictronConnect.
Bluetooth and the VictronConnect app
- All models support Bluetooth and can be monitored, operated, and configured via the VictronConnect app.
- Instant Readout is supported - key battery data is shown without needing to pair.
Battery monitor
- Lithium NG batteries have integrated shunts and send SoC, voltage, cell voltage, temperature, and balancer status to the BMS. No external battery monitor is required.
Communication options:
- VE.Bus BMS NG can directly control VE.Bus inverters or inverter/chargers in case of a battery cell undervoltage, overvoltage or temperature alarm.
- VE.Bus BMS NG and Lynx Smart BMS NG support DVCC and can control compatible inverter/chargers and solar chargers via GX device without using the disconnect terminals.
- Lynx Smart BMS NG supports monitoring of up to four Lynx Distributor modules.
Optional accessories:
- VictronConnect app (free download).
- Pair of M8 circular connector 3-pole cables, to extend the battery BMS cables.
- VE.Direct non inverting remote on/off cable.
- Inverting remote on/off cable.
- Non inverting remote on/off cable.
System design recommendations:
- SmallBMS NG for 12, 24 or 48 V systems without inverter/chargers.
- VE.Bus BMS NG for 12, 24 or 48 V systems with inverter/chargers and a GX device.
- Lynx Smart BMS NG for 12, 24 or 48 V systems with digital integration and with the need to have a safety relay to disconnect DC loads and/or inverters or inverter/chargers, like is the case in yachts or recreational vehicles.
- Available in two different versions: 500 A and 1000 A (both with M10 busbar).
Comparison overview:
The below overview is a comparison and a brief summary of the BMS features. For full technical specifications, see the individual BMS datasheets.
| Features | smallBMS NG | VE.Bus BMS NG | Lynx Smart BMS NG 500 A or 1000 A |
|---|---|---|---|
| System voltage | 12, 24 or 48 V | 12, 24 or 48 V | 12, 24 or 48 V |
| System connection | No | No | 500 A or 1000 A |
| Alternator port | No | No | Yes (Alternator ATC mode) |
| Battery monitor | Yes (via battery) | Yes | Yes (via battery) |
| Bluetooth | Yes | Yes | Yes |
| Data communication | No | VE.Bus communication with inverter/charger(s) and a GX device | VE.Can communication with a GX device |
| Control via GX device (DVCC) | Yes | Yes | NMEA 2000 |
| Allowed to discharge terminal(s) | High/free floating 1 A | High/free floating 10 mA | Relay 0,5 A |
| Allowed to charge terminal(s) | High/free floating 10 mA | High/free floating 1 A | Relay 0,5 A |
| Pre-alarm terminal(s) | Free floating/high 1 A | Free floating/high 1 A | Programmable relay 2 A |
| Remote on/off terminal | Yes | Yes | Yes |
| Auxiliary output | No | Yes, 1 A | Yes, 1,1 A |
| Auxiliary input | No | Yes, 1 A | No |
| Possible to update firmware | No | No | Yes |
| Weight (kg) | 0,1 | 0,12 | 1,9 (500 A) or 2,7 (1000 A) |
| Dimensions (mm) | 106 x 42 x 23 | 24 x 95 x 106 | 190 x 180 x 80 (500 A) or 230 x 180 x 100 (1000 A) |
| Protection | IP20 | IP20 | IP22 |
| Remarks | smallBMS NG | VE.Bus BMS NG | Is part of the Lynx Distribution System |
| Datasheet | Lithium NG Battery 12,8 V, 25,6 V & 51,2 V | M8 circular connector 3 pole cable | VE.Direct non inverting remote on/off cable |
Related Products:
- Lithium NG Battery 12,8 V, 25,6 V & 51,2 V
- M8 circular connector 3 pole cable
- VE.Direct non inverting remote on/off cable
- Inverting remote on/off cable
- Non inverting remote on/off cable
