MG Master LV 12V Battery Management Controller (400/600/1000A)

The MG Master LV 12V is the brain and safety hub of an MG lithium system. It continuously monitors every battery parameter and steps in the moment any value drifts outside preset limits, while its internal main safety contactor can physically disconnect chargers and loads when needed. It manages up to 96 MG LFP 12V modules, talks over CAN-Bus, and includes Bluetooth Smart for setup and monitoring in the MG app — a complete management layer that keeps a 12V house bank safe and well-behaved.

Key Features

• Continuous monitoring with automatic intervention on out-of-limit conditions
• Internal main safety contactor disconnects chargers and loads
• Manages up to 96 MG LFP 12V battery modules
• CAN-Bus communication compatible with Victron VE.Can, NMEA2000, and SMA
• Bluetooth Smart for configuration and monitoring
• Allow-to-charge / allow-to-discharge and programmable relay outputs
• Reinforced ABS enclosure, IP22, 426 x 225 x 117 mm, -20 to 50 °C operation

Specifications by Model

MG Master LV 12V / 400A (MGMLV120400)

• Main safety contactor: 400A continuous; weight 4.9 kg

MG Master LV 12V / 600A (MGMLV120600)

• Main safety contactor: 600A continuous; weight 6.0 kg

MG Master LV 12V / 1000A (MGMLV121000)

• Main safety contactor: 1000A continuous; weight 8.6 kg

Warranty

MG Energy Systems backs this controller with a 4-year limited warranty covering defects in materials or workmanship. Normal end-of-life wear, which varies with usage and operating conditions, is not covered.

Blue Marine is an authorized MG Energy Systems dealer — ships brand-new with MG's 4-year limited warranty, free shipping, and local pickup available.