BigBattery 48V NEXUS 2 LiFePO4 Battery - 314Ah 16kW
The BigBattery NEXUS 2 51.2V 16kWh LiFePO₄ Battery is a cost-effective, high-capacity energy storage solution designed for off-grid homes, cabins, and backup power systems. With a compact, portable, floor-standing design, NEXUS 2 delivers reliable, uninterrupted power while allowing flexible installation in garages, utility rooms, cabins, or sheds-without complex mounting.
Powered by advanced LiFePO₄ battery chemistry, NEXUS 2 offers long service life, enhanced safety, and consistent performance. Built with an integrated Battery Management System (BMS) featuring multiple layers of protection, it ensures dependable operation even in demanding environments.
Each unit includes a self-heating function for cold-weather performance and integrated aerosol fire suppression for added safety. The NEXUS 2 is expandable up to 240kWh, ideal for off-grid solar systems, commercial backup power, and home emergency power applications where affordability, scalability, and reliability matter most.
FEATURES
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16kWh LiFePO₄ Battery Module - Safe, high-capacity lithium storage with long lifespan
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8,000+ Cycle Life - Built for years of daily use and long-term savings
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Advanced BMS Protection - Multi-layer protection against voltage, current, and temperature risks
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Self-Heating Function - Reliable performance in cold climates
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Integrated Thermal Suppression - Built-in aerosol system for enhanced safety
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Modular Expansion - Scale from 16kWh up to 240kWh as needed
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Compact Floor-Standing Design - Easy placement without wall mounting
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Maintenance-Free Operation - No routine servicing required
- Warranty - 12 Years
- Support - Lifetime USA-Based Tech Support
A reliable, scalable, and safety-focused battery solution built for long-term energy independence.
SPECIFICATIONS
Communication of Inverters list (Off Grid Non-UL 9540 Installs)
- All BigBattery APEX Inverters
- EG4
- GoodWe
- Solis
- Deye
- PYLON
- Victron
Power Flexibility:
- Supports off-grid installations
- Scalable energy storage for residential and commercial use
- Designed for scalable energy storage applications
The NEXUS 2 is compatible and parallel-able with all existing KONG and GRIZ products purchased between 2019-2024.
GUIDE
WARRANTY
BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade.
FAQS
How many NEXUS 2 batteries can I parallel?
Up to 15 units per inverter, giving 240kWh of total capacity. Each unit is 16kWh with 314Ah, and the system uses RS485, CAN and RJ45 communication ports, so expansion integrates with new or existing inverter systems rather than requiring separate management.
Does the NEXUS 2 have fire suppression?
Yes. Each NEXUS 2 includes integrated aerosol fire suppression alongside self-heating for cold weather. That is unusual at this price point and matters for indoor installs in garages, utility rooms and sheds where a battery sits near living space.
Does the NEXUS 2 work with my old KONG batteries?
Yes. The NEXUS 2 is compatible and parallel-able with all existing KONG and GRIZ products purchased between 2019 and 2024. That means you can expand an older BigBattery system rather than replacing it, which is rare in this market.
What inverters is the NEXUS 2 compatible with?
In an off-grid setup using closed-loop communications, it is compatible with all BigBattery APEX and EG4 inverters. Documented compatibility also includes select systems from Solis, Deye, GoodWe, SRNE, Pylontech, Victron, Growatt, Voltronic Power, and LuxPowerTek.
Is the NEXUS 2 suitable for a cabin?
Yes. the NEXUS 2 is a compact, portable, floor-standing design that installs in garages, utility rooms, cabins or sheds without wall mounting. With 314Ah, 140A max continuous discharge and peak support to 270A, it handles high-demand loads, and it discharges down to -4°F.
