Product Summary:
The 48V 15 kWh NEXUS LiFePO₄ Battery is a cost-effective, high-capacity energy storage solution for off-grid homes, cabins, and backup power systems. Designed with a compact, portable, floor-standing form factor, the NEXUS delivers reliable, uninterrupted power using advanced LiFePO₄ chemistry for long service life, safety, and efficiency. Ideal for installations in garages, tech closets, cabins, or sheds, it offers flexible placement without complex mounting.
Built with an integrated Battery Management System featuring quadruple safety protections, the NEXUS ensures dependable operation in demanding environments. Each unit includes a self-heating function and integrated aerosol fire suppression for added safety and cold-weather performance. Scalable up to 225 kWh, the 48V NEXUS 15 kWh battery is well suited for off-grid solar systems, commercial backup power, and home emergency power supply (EPS) applications where affordability, scalability, and reliability matter most.
48V 15kWH NEXUS LiFePO4 Battery
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Introducing the Nexus
Sleek & Compact Design
Our stackable, compact design comes with all the hardware you need for a straightforward setup, letting you get your off-grid system up and running efficiently in less time. Engineered for reliability in any off-grid environment, it delivers consistent power when you need it most.
Off-Grid Energy Reliability
With 300Ah of capacity, 140A max continuous discharge, and peak support up to 270A, NEXUS handles high-demand loads with ease. NEXUS’s smart thermal management enables charging from 32 °F to 113 °F and discharging down to -4 °F, making it a true all-weather energy solution.
Modular ESS That Grows With You
NEXUS supports parallel expansion up to 15 units, offering 225kWh total capacity per inverter. With RS485, CAN, and RJ45 communication ports, it’s ready to integrate seamlessly into new or existing inverter systems—ensuring full system transparency, automation, and control.
Legacy Product Parallel Compatibility
The NEXUS is compatible and parallel-able with all existing KONG and GRIZ products purchased between 2019-2024.
DOWNLOADBattery Specifications
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. For more information, please visit our <a href=”https://bigbattery.com/policies/”>policy</a> page