MB3942 This professional DC-DC charger is designed for dual-battery systems in vehicles or boats where the alternator and the start battery are used to charge the service battery.A configurable 3-stage charge algorithm provides an adaptive bulk, absorption, or float modes to keep your 12V lead-acid or Lithium service battery in top condition. Alternatively, a fixed voltage can be chosen.Features include engine running and shutdown detection, remote on/off switch capability for manual or BMS control, and Bluetooth® technology to monitor charging status in real-time, view historical data, or program via a Bluetooth® enabled Smartphone, tablet or laptop.In addition, the charger can also double as a stable power supply to power 12V devices in your vehicle, such as a fridge/freezer, which can automatically disconnect power at a pre-defined voltage to avoid the service battery going flat.Safety features include overload, over-temperature, and short circuit protection, and multiple units can be paralleled to increase the output current. Non-insulated.FEATURES:• 3-stage charge algorithm• Suits 12V Lead-acid or Lithium batteries• Supports regular & smart ECU controlled alternators• Bluetooth® enabled • Remote on-off capabilitySPECIFICATIONSInput Voltage: 10-17VDCUnder Voltage Shutdown: 7VUnder Voltage Restart: 7.5VOutput Voltage: 12.2V (nominal), 10 to 15V (Adjustable)Output Current: Up to 30A (nominal), 40A (10s)Short Circuit Output Current: 60AEfficiency: 87%No Load Input Current: <80mAStandby Current: <1mAScrew Terminals: 16mm2 (AWG6)Note: A replacement green terminal block is available separately as HM3122

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