MG Energy Systems
MG Master LV 12V/600A - MGMLV120600
£1,029.60
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MGMLV120600
An all-in-one 12 Vdc battery management system with an integrated 600 A safety contactor and DC busbar, protecting and balancing up to 96 MG lithium modules over CAN-Bus.
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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 12V/600A is an all-in-one battery management system for 12 Vdc lithium installations on leisure and commercial vessels. It continuously monitors every connected MG battery module over CAN-Bus, balances the cells and keeps voltage, current and temperature inside a safe operating window. If a parameter is exceeded, the integrated safety contactor opens automatically to disconnect chargers and loads, giving the bank a dependable second layer of protection.
An internal DC busbar sits at the heart of the unit: batteries land on one side and chargers, inverters and electric drives on the other, which cuts cabling and speeds up installation. The main contactor is rated for 600 A continuous, and a single Master LV can manage up to 96 MGLFP120210 modules. RJ45 CAN-Bus with NMEA 2000, SMA and Victron VE.CAN support, plus Bluetooth through the MG Connect app, makes the system easy to monitor, while combined mode lets several units run in parallel for larger, redundant banks.
PRODUCT DETAILS
- All-in-one 12 Vdc BMS with an internal DC busbar that cuts cabling and speeds installation
- Integrated safety contactor rated 600 A continuous, opening automatically to disconnect chargers and loads on a fault
- Manages up to 96 MGLFP120210 lithium modules from a single Master LV
- Active cell and module balancing to preserve capacity and extend battery life
- RJ45 CAN-Bus with NMEA 2000, SMA and Victron VE.CAN protocol support
- Bluetooth monitoring and control through the free MG Connect app
- Programmable I/O with allow-to-charge, allow-to-discharge, 13.5 V aux output and a generator or heater relay
- Rugged ABS enclosure, IP22 rated, 6.0 kg, operating from -20 to +50 C
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Key specifications
| System voltage | 12 V |
| Max continuous current | 600 A (main safety contactor) |
| Battery modules supported | Up to 96 x MGLFP120210 |
| Data connection | CAN Bus RJ45 |
| Safety contactor | Integrated, opens automatically on fault |
| IP protection | IP22 |
| Weight | 6.0 kg |
Electrical
| System voltage | 12 V |
| Supply voltage range | 8 to 15 Vdc |
| Main safety contactor current | 600 A |
| Power usage (active) | 10.3 W |
| Power usage (standby) | 63 mW |
Battery configuration
| Maximum batteries connected | 96 battery modules of type MGLFP120210 |
| Cell balancing | Active balancing on cell and module level |
Communication
| Data connection | CAN Bus RJ45 |
| Communication protocols | NMEA 2000, SMA, Victron VE.CAN |
| Bluetooth | Built-in, via the MG Connect app |
Protection & I/O
| Safety contactor | Integrated main contactor, opens automatically when a parameter exceeds the safe window |
| Pre-charge circuit | Built-in, limits inrush current at start-up |
| 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 |
Mechanical
| Dimensions (L x W x H) | 426 x 225 x 117 mm |
| Enclosure material | ABS |
| IP protection class | IP22 |
| Weight | 6.0 kg |
| Operating temperature range | -20 to +50 C |
| Humidity | Up to 95 % (non-condensing) |
General
| Manufacturer | MG Energy Systems |
| Country of origin | Netherlands |
| 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 |
| HS code | 8537109199 |
| Shipping weight | 6.6 kg |
| Classified as dangerous goods | No |
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Which batteries does the Master LV 12V/600A work with?
It manages MG 12 V lithium banks built from MGLFP120210 modules, up to 96 modules per Master LV. Every MG module has its own slave BMS that reports cell voltage and temperature to the Master over CAN-Bus.
How does the Master LV connect into the system?
Batteries connect to the left of the internal DC busbar and chargers, inverters and drives to the right. CAN-Bus over RJ45 links the batteries and auxiliary devices, with NMEA 2000, SMA and Victron VE.CAN protocols supported.
Can I combine several units for a larger bank?
Yes. Two or more Master LV units can run in combined mode to build larger, redundant banks. Add an MG SmartLink MX to merge the data and provide central start, stop and reset control.
