Description
Silent, high_voltage power for electric propulsion and true generator_free living aboard.
Meet the house battery that lets you cruise, anchor, and sleep without the drone of a genset. Built around a 51.2V LiFePO₄ pack and a robust marine BMS, this 6.4 kWh module is purpose_engineered for electric propulsion and high_demand DC/AC house loads—then sealed to IP67 so it actually belongs on a boat. It also speaks Victron natively over CAN, so your inverter/charger and GX devices coordinate charge limits and currents automatically for a clean, alarm_free system.
Why choose this battery?
- Generator replacement: Pair with a Victron inverter/charger and you’ve got quiet AC overnighting, galley loads, and thrusters without burning diesel. Victron_protocol CAN comms coordinate CVL/CCL during charging and taper current as the pack fills—exactly how it should work on a yacht.
- Serious energy density: 51.2 V × 125 Ah = 6,400 Wh in a single module designed for parallel scaling. (Series connections are not supported; keep modules at the same voltage before paralleling.)
- Marine_ready build: IP67 enclosure, CE/UN38.3 compliant, with integrated BMS protections for over/under_voltage, over_current, temperature, and short circuit.
- Victron protocol compatible: CANBUS + RS_485 on board for plug_and_play integration with Victron inverters/chargers and GX devices.
- Installer_friendly: Clearly labeled IN/OUT, charger/motor comm ports, remote/wire_control switch option, and busbar guidance—including fuse and gauge recommendations.
Key specifications
- Nominal voltage / capacity: 51.2 V / 125 Ah (LiFePO₄); Stored energy: ~6.4 kWh.
- Voltage range: ~40–57.6 V (CC/CV charging at 57.6 V).
- Charge method/time: CC_CV; typical full charge ≈ 4.5 h (standard).
- Cycle life: Long_life deep cycle LiFePO₄ (manufacturer lists multi_thousand_cycle performance at 0.5C).
- Enclosure rating: IP67; Certs: CE, UN38.3.
- Dimensions (L×W×H): 650 × 360 × 210 mm; Approx. weight: ≈ 58.5 kg.
- Comms: CANBUS & RS_485; Victron protocol compatible.
- System topology: Parallel_only expansion; series not supported.
What it powers
- Electric outboards & pods (48 V class)
- Silent nights at anchor: air_con (with inverter), galley, refrigeration, pumps, lighting
- High_load DC systems: windlass, bow/stern thrusters (within BMS limits)
Additional information
| Model | AB-48V125 |
|---|---|
| Manufacturer |













