BigBattery NEXUS 2 51.2V 16kWh LiFePO4 Battery

The BigBattery NEXUS 2 is a high-capacity 51.2V 16kWh LiFePO4 energy storage system engineered for dependable home backup and off-grid performance. Featuring a durable floor-standing design with built-in self-heating and integrated aerosol fire suppression, this unit delivers robust operation in demanding conditions. Equipped with 314Ah capacity, multi-layer BMS protection, and flexible parallel expansion up to 15 units, it provides scalable, uninterrupted power for cabins, sheds, and whole-home setups. Key Features Brand BigBattery Model NEXUS 2 SKU F-NXUS2-48161-G1 GTIN/UPC 00199874694771 Chemistry LiFePO4 Nominal Voltage 51.2V System Voltage 48V Capacity 314Ah Usable Energy 16.08kWh Cell Configuration 16S1P Max Continuous Discharge Current 150A Max Continuous Power 7.6kW Max Discharge Peak Current 270A (1s) Max Charge Current 140A Charging Voltage Range 53.5V–57.6V Operating Voltage Range 48V–57.6V Max Charge Voltage 57.9V Suggested Low Voltage Cutoff 50.8V Charge Temperature Range 32°F to 113°F Discharge Temperature Range -4°F to 113°F Optimal Discharge Temperature 59°F to 95°F Humidity Range 10%–95% (No Condensation) Max Connections 15 in parallel (up to 225kWh) Communications RS485 / RJ45 / CAN Protection Rating IP54 Installation Indoor Floor-standing Dimensions (W x H x D) 19.7 x 27.5 x 15.7 in Weight 315 lbs Highlights 16kWh LiFePO₄ Battery Module – Safe, high-capacity lithium storage with long lifespan 8,000+ Cycle Life – Built for years of daily use and long-term savings Advanced BMS Protection – Multi-layer protection against voltage, current, and temperature risks Self-Heating Function – Reliable performance in cold climates Integrated Thermal Suppression – Built-in aerosol system for enhanced safety Modular Expansion – Scale from 16kWh up to 241kWh as needed Compact Floor-Standing Design – Easy placement without wall mounting Maintenance-Free Operation – No routine servicing required Compatibility Communication of Inverters list (Off Grid Non-UL 9540 Installs) APEX Inverters EG4 GoodWe Solis Deye PYLON Victron Warranty Batteries are backed by a 12-year manufacturer's warranty, providing long-term performance. Designed for durability and engineered to last, the batteries are built to power setups for over a decade. Downloads Spec Sheet User Manual Frequently asked questions How many NEXUS 2 units can be connected in parallel? Up to 15 units can be connected in parallel per inverter, delivering a total capacity of up to 241kWh. Does the NEXUS 2 feature built-in fire suppression and heating? Yes, each unit is equipped with an integrated aerosol fire suppression system and a self-heating function for cold-weather operation. Is the NEXUS 2 backwards compatible with older BigBattery models? Yes, the NEXUS 2 is fully compatible and parallel-capable with all existing KONG and GRIZ units purchased between 2019 and 2024. Which inverters support communication with the NEXUS 2? It communicates with all BigBattery APEX inverters, EG4, GoodWe, Solis, Deye, PYLON, and Victron systems.