MG Energy Systems
MG Energy Systems Low Voltage Master BMS. 72-96V. 500A - M12 CAN Connection
£1,942.80
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MGMLV962500
All in one BMS for 72 V and 96 V MG lithium banks, with a 500 A safety contactor, integrated DC busbar and CAN-Bus M12 monitoring, for marine propulsion and off-grid systems.
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Collection or delivery in 1-2 weeks
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The MG Master LV 72-96V/500A is the all in one battery management system for 72 V and 96 V lithium installations at the top of the Master LV low voltage range, built around a 500 A main safety contactor. It is the control and protection heart of an MG lithium bank, monitoring every cell and module over CAN-Bus through each battery's built-in slave BMS. If any parameter leaves the safe operating window, the internal safety contactor opens automatically to disconnect all chargers and loads, giving dependable second layer protection for electric marine propulsion and large off-grid systems.
With three MG batteries in series you build a 72 V system, or four in series for 96 V, ideal for CAN-Bus controlled high voltage chargers and electric drives connected to the integrated DC busbar. The built-in pre-charge circuit, fuse holders for up to eight MEGA-fuses and cell and module balancing keep the install compact and reliable, while NMEA2000 capable CAN-Bus over M12, Bluetooth and the MG Connect app provide monitoring and control. Add strings in parallel and combine units with a SmartLink MX to grow capacity and add redundancy. At 4.6 kg it is a light, space saving controller.
PRODUCT DETAILS
- All in one BMS for 72 V and 96 V low voltage lithium systems (40 to 120 Vdc supply range)
- 500 A main safety contactor disconnects chargers and loads on any out of limit parameter
- Builds a 72 V system from 3 batteries in series, or 96 V from 4 in series
- Manages up to 48 RS modules or 96 LFP, HE, UHE or HP battery modules
- Integrated pre-charge circuit and DC busbar with holders for up to eight MEGA-fuses
- Cell and module balancing to maximise capacity and extend battery life
- CAN-Bus M12 communication, NMEA2000 capable, with Bluetooth and MG Connect app
- Light, compact ABS enclosure, IP22 rated, just 4.6 kg
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Key specifications
| System voltage | 72 V and 96 V |
| Main safety contactor current | 500 A |
| Supply voltage range | 40 to 120 Vdc |
| Maximum batteries | 48 RS modules, or 96 LFP / HE / UHE / HP modules |
| Data connection | CAN Bus M12 |
| IP protection class | IP22 |
| Weight | 4.6 kg |
Electrical
| System voltage | 72 V and 96 V |
| Main safety contactor current | 500 A |
| Supply voltage range | 40 to 120 Vdc |
| Maximum pre-charge capacity | 50 mF at 72 V, 50 mF at 96 V |
| Power usage active | 5.6 W |
| Power usage standby | < 2 mW |
Battery configuration
| Maximum batteries connected | 48 battery modules of type RS, or 96 modules of type LFP, HE, UHE, HP |
| Series configuration | 3 batteries in series for 72 V, 4 in series for 96 V |
| Balancing | Cell and module level |
Communication
| Data connection | CAN Bus M12 |
| Protocol | CAN-Bus, NMEA2000 capable |
| Wireless | Bluetooth with MG Connect app |
Protection & I/O
| Allow-to-charge (relay output) | 0.8 A at 60 Vdc, potential free |
| Allow-to-charge (switched voltage) | 13.5 V / 1 A, overcurrent and short circuit protected |
| Allow-to-discharge (relay output) | 0.8 A at 60 Vdc, potential free |
| Allow-to-discharge (switched voltage) | 13.5 V / 1 A, overcurrent and short circuit protected |
| Auxiliary output | 13.5 V / 1 A, overcurrent and short circuit protected |
| External status signal | 13.5 V / 140 mA, overcurrent and short circuit protected |
| Programmable contact (relay output) | 0.8 A at 60 Vdc, potential free |
| Emergency switch connection | Hardwired shutdown to open the main contactor |
Mechanical
| Enclosure material | ABS |
| Dimensions (L x W x H) | 426 x 225 x 117 mm |
| Weight | 4.6 kg |
| IP protection class | IP22 |
Environmental
| Operating temperature range | -20 to +50 °C |
| Humidity (non-condensing) | <= 95 % |
General
| Manufacturer | MG Energy Systems |
| Country of origin | Netherlands |
| HS code | 8537109199 |
| Shipping weight | 5.2 kg |
| Approvals | IEC-EN62619 (ES-TRIN) |
| EMC emission | EN-IEC 61000-6-3:2007/A1:2011/C11:2012 |
| EMC immunity | EN-IEC 61000-6-1:2007 |
| Low Voltage Directive | EN 60335-1:2012/AC:2014 |
| RoHS | EN 50581:2012 |
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How many MG batteries do I need for a 72 V or 96 V system?
Put three MG batteries in series for a 72 V system or four in series for 96 V. The Master LV 72-96V then controls a CAN-Bus high voltage charger and electric drive on the same internal DC busbar, and you add further strings in parallel to increase kWh.
What is the maximum current and battery count?
The unit has a 500 A main safety contactor and manages up to 48 RS series modules or up to 96 LFP, HE, UHE or HP modules, monitoring and balancing every cell and module over CAN-Bus.
Can I build a redundant 72 to 96 V bank?
Yes. With a SmartLink MX and the software combined mode, two or more Master LV 72-96V units run as one large, fully scalable bank with redundancy, so propulsion and off-grid systems stay operational even if one string is isolated.
