Abyss 48V125AH Lithium Marine House Battery

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 LiFePO ₄ 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  (LiFePO ₄ );  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 LiFePO ₄ (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)