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Product Description

The BigBattery NEXUS 2 is a 51.2V, 16.08kWh LiFePO4 energy storage battery built for off-grid homes, cabins, ranches and backup power systems. Its compact, floor-standing design installs in a garage, utility room, cabin or shed without wall mounting, and ships with the hardware needed for a straightforward setup.

With 314Ah of capacity, 150A continuous discharge and 270A peak, NEXUS 2 handles high-demand loads with ease. A built-in self-heating function enables cold-weather charging, an integrated aerosol fire-suppression system adds a layer of safety, and parallel expansion of up to 15 units scales a single system to 240kWh.

Key Features

  • 16.08kWh LiFePO4 module with 8,000+ cycle life
  • 150A continuous / 270A peak discharge, 7.6kW continuous power
  • Self-heating for reliable charging in cold climates
  • Integrated aerosol fire suppression
  • Expandable up to 15 units in parallel (240kWh)
  • RS485, CAN and RJ45 communication ports
  • Compact indoor floor-standing design, maintenance-free
  • Parallel-compatible with BigBattery KONG and GRIZ batteries purchased 2019–2024

Compatibility

  • Closed-loop communication with BigBattery APEX inverters
  • EG4, Victron, GoodWe, Solis, Deye and PYLON inverters (off-grid, non-UL 9540 installs)

Specifications

System Voltage 48V (51.2V nominal)
Chemistry LiFePO4
Usable Energy 16.08kWh
Capacity 314Ah
Cell Configuration 16S1P
Max Continuous Discharge 150A
Max Continuous Power 7.6kW
Peak Discharge 270A (1 s)
Max Charge Current 140A
Charging Voltage Range 53.5V – 57.6V
Operating Voltage Range 48V – 57.6V
Charge Temp Range -4°F to 113°F (charging begins at 32°F after self-heating)
Discharge Temp Range -4°F to 113°F
Max Parallel 15 units (240kWh)
Communications RS485 / RJ45 / CAN
Protection Rating IP54
Installation Indoor, floor-standing
Dimensions (W×H×D) 19.7 × 27.5 × 15.7 in (500 × 700 × 400 mm)
Weight Approx. 315 lb
UPC 00199874694771

Warranty & Support

12-year BigBattery warranty with lifetime USA-based technical support. Ships from Texas, USA.

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