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BigBattery 48V 15kWH NEXUS LiFePO4 Battery

BigBattery 48V 15kWH NEXUS LiFePO4 Battery

BY: Big Battery | SKU: F-NXUS-48150-G1 Availability: In Stock
$2,999.00
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BigBattery 48V 15kWh NEXUS LiFePO4 Battery

The BigBattery NEXUS 15kWh is a high-capacity 48V lithium iron phosphate (LiFePO4) battery engineered for residential and commercial energy storage applications. With 15kWh of usable energy, 300Ah capacity, and 7.6kW continuous output, this floor-standing unit delivers reliable power for off-grid systems, solar backup, and whole-home energy storage.

Built with advanced BMS protection, multi-unit parallel capability (up to 225kWh), and integrated communications (RS485 / RJ45 / CAN), the NEXUS battery provides scalable, intelligent, and long-lasting performance.

BigBattery 48V 15kWh NEXUS LiFePO4 Battery Features

15kWh High-Capacity Energy Storage – Delivers substantial backup power for homes, cabins, and commercial systems.

LiFePO4 Battery Chemistry – Safer, more stable lithium iron phosphate cells with extended cycle life.

Integrated Smart BMS – Built-in battery management system protects against overcharge, over-discharge, short circuit, and temperature extremes.

48V System Compatibility – Designed for seamless integration with 48V inverters and hybrid solar systems.

Scalable & Expandable – Parallel capability allows multiple units to increase total system capacity.

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BigBattery 48V 15kWh NEXUS LiFePO4 Battery Applications

  • Residential solar storage – Store daytime solar production for nighttime use.
  • Whole-home backup systems – Reliable emergency power during outages.
  • Off-grid cabins & homesteads – Stable energy storage for remote locations.
  • Hybrid inverter systems – Integrates with 48V solar inverter platforms.
  • Small commercial energy storage – Backup for offices, workshops, and light industrial use.
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What's Included

Everything you need is included with your product.

  • 1 x BigBattery NEXUS 15kWh 48V Battery
  • 3 x 5 ft Battery to Inverter Comm Cable
  • 6 x 4AWG Red and Black Battery to inverter Power Cables
  • 1 x User Manual
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Warranty

  • BigBattery 12-Year Limited Warranty

BigBattery 48V 15kWh NEXUS LiFePO4 Battery Specifications

Category Specifications
Battery Specifications NEXUS 15KWh
GTIN/UPC 00199874694771
System Voltage 48V
Nominal Voltage 51.2V
Chemistry LiFePO4
Usable Energy (kWh) 15kWh
Ah Capacity 300Ah
Cell Configuration 16S1P
Max Continuous Discharge Current 100A
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 Temp Range 32°F to 113°F
Discharge Temp Range -4°F to 113°F
Optimal Discharge Temp 59 °F to 95°F
Storage Temp Range (SoC >50%) (1 month: -4°F ~ 113°F | 3 months: -4°F ~ 95°F | 6 months: -4°F ~ 77°F)
Humidity Range 10%-95% (No Condensation)
Weight (lbs) ~315 lbs
Dimensions (WxHxD) 19.7 x 27.5 x 15.7 in (500×700×400 mm)
Altitude Limit <2000m
Max Connections 15 in parallel (up to 225kWh)
Communications RS485 / RJ45 / CAN
Protection Rating IP54
Installation Indoor Floor-standing
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Frequently-Asked Questions

What inverters is the NEXUS battery compatible with?

The battery supports RS485, RJ45, and CAN communication, making it compatible with many 48V hybrid and off-grid inverter systems. Always confirm inverter compatibility before installation.

How many units can be connected together?

Up to 15 batteries in parallel, allowing expansion up to 225kWh total capacity.

Is this battery suitable for outdoor use?

This model is rated IP54 and designed for indoor floor-standing installation.

What type of battery chemistry is used?

It uses Lithium Iron Phosphate (LiFePO4) for enhanced safety, stability, and longevity.