ABYSS® 48V125Ah Lithium Marine House Battery

It is designed for both compatible 48V-class electric propulsion and marine house systems. Its 51.2V LiFePO4 pack stores 6.4kWh for planned DC loads or AC loads supplied through an appropriate inverter. A complete system still needs charging, switching, protection and any voltage conversion required by the boat’s equipment.

Build a load plan that includes average consumption, appliance starting surges, inverter losses and the reserve needed for essential systems. The battery’s continuous discharge rating is 125A; stored energy and output current are separate limits. Air conditioning, cooking and propulsion demand should be assessed together before promising an overnight operating time.

The battery provides CANBUS and RS-485 communication and supports the Victron protocol for compatible system integration. With the correct equipment, cabling and configuration, battery limits can be shared with the charging system. Installers should confirm the exact inverter/charger, GX device, cable pinout and software requirements before commissioning; a connector alone does not establish compatibility.

The published charging method is constant current/constant voltage at 57.6V, with 30A listed as the standard charge current. Use approved lithium-compatible equipment and confirm that each charge source respects battery limits. Shore power, solar and any other onboard charging sources should be configured as one coordinated system.

Yes, this model is designed for parallel expansion at the same voltage. Series connection is not supported, and batteries must be at the same voltage before paralleling. Have ABYSS confirm the approved bank size, communication arrangement, busbars, cable sizing and protection so the modules can share loads and charging correctly.

The published enclosure is approximately 650 × 360 × 210mm and uses energy-storage connectors rather than conventional exposed M8 battery terminals. Allow space for cable routing, access and secure retention. Confirm connector mating parts, communication cables, mounting equipment and any tray on the order; these should not be assumed included as a complete installation kit.

No. The integrated BMS protects the battery against conditions such as overvoltage, undervoltage, excessive current and temperature faults. The installation still needs protection and switching appropriate to its cables, inverter and propulsion equipment. Dealers and OEMs should coordinate those devices with the battery’s operating limits and the vessel’s electrical design.

The enclosure is IP67 rated, but connectors, wiring and the compartment still require a suitable marine installation. Avoid standing water and preserve access for inspection. The published charging range begins at 0°C (32°F), so the system must prevent charging outside the approved range; the water rating does not change the temperature limits.

Confirm polarity, retention, cable and protection ratings, charging settings and communication status. Test representative house or propulsion loads and verify the system responds correctly to battery limits. Document the equipment configuration and show the owner how to isolate the bank, check status and manage reserve for essential onboard systems.

Isolate nonessential loads, follow the supplied storage guidance and check battery status periodically. For eligible marine lithium purchases under the policy effective August 1, 2026, register within 90 days with proof of purchase and the serial number for the 10-year coverage. Earlier purchases follow their original terms; retain the installation records for support.