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BigBattery NEXUS 48V 15kWH LiFePO4 Battery

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F-NXUS-48150-G1

$2,980.00
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BigBattery NEXUS 48V 15kWH LiFePO4 Battery

High-Capacity LiFePO₄ Energy Storage for Residential, Commercial, and Off-Grid Systems

The BigBattery F-NXUS-48150-G1 is a powerful 48V 15kWh NEXUS LiFePO₄ battery designed for demanding energy storage needs. Built with advanced lithium iron phosphate chemistry, this modular battery delivers long cycle life, superior safety, and reliable performance in both on-grid and off-grid environments. Its scalable architecture allows easy expansion for larger systems, making it a versatile solution for homes, businesses, and remote installations.

Key Features:

  • 15kWh High-Capacity Energy Storage: Provides dependable, long-duration power for solar, backup, and off-grid applications.
  • Advanced LiFePO₄ Chemistry: Ensures safe operation, stable performance, and extended lifespan with deep-cycle capability.
  • Robust Floor-Standing Design: Built for durability and straightforward installation in garages, closets, sheds, or utility rooms.
  • Integrated BMS Protection: Includes a four-layer safety system to protect against overcharge, over-discharge, overheating, and short circuits.
  • Expandable System Architecture: Supports scaling up to 225kWh for larger residential or commercial energy storage deployments.

Ideal Applications:

  • Residential solar energy storage
  • Commercial backup power systems
  • Off-grid homes, cabins, and remote sites
  • Emergency power systems (EPS)
  • Large-scale modular energy storage projects

What’s Included:

  • 1 × 51.2V 300Ah (15kWh) NEXUS LiFePO₄ Energy Storage Module with Integrated Aerosol Fire Extinguisher and Built-In Heater

Specifications

Parameter Details
Model 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 140A
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 to 113°F
3 months: -4°F to 95°F
6 months: -4°F to 77°F
Humidity Range 10%–95% (No condensation)
Altitude Limit <2000m
Weight ~315 lbs
Dimensions (W × H × D) 19.7 × 27.5 × 15.7 in (500 × 700 × 400 mm)
Max Connections 15 in parallel (up to 225kWh)
Communications RS485 / RJ45 / CAN
Protection Rating IP54
Installation Indoor floor-standing

Understanding Your Power Needs

Power Calculation Guide

Sizing Metric Formula & Example
Energy Consumption (Wh) Formula: Watts × Hours
Example: 60W × 4 hrs = 240 Wh
Battery Capacity (Ah) Formula: Watt-hours ÷ System Voltage (V)
Example: 240 Wh ÷ 12V = 20 Ah
Inverter Size (W) Formula: Total Watts × 1.25 (safety margin)
Example: 300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W) Formula: Sum of all appliance watts used simultaneously
Example: Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery Formula: (Battery Ah × Voltage) ÷ Total Load (W)
Example: (100Ah × 12V) ÷ 240W = 5 hrs

Find Your Power Match

Need / Application System Recommendation
Basic lighting + phone charging Recommended Battery: 50Ah – 100Ah (12V)
Inverter Size: 100W – 200W
Notes: For small backup setups
Home office (laptop, fan, TV) Recommended Battery: 150Ah – 200Ah (12V or 24V)
Inverter Size: 500W – 1000W
Notes: For moderate usage with 4–6 hours of backup
Home backup (fridge, lights) Recommended Battery: 200Ah+ (24V or 48V recommended)
Inverter Size: 1000W – 1500W
Notes: Ideal for longer backups or heavier loads
Business / shop power backup Recommended Battery: 300Ah+ (48V system)
Inverter Size: 2000W – 3000W
Notes: Suitable for commercial setups or extended power outages

Why Shop With Us

  • Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products backed by full manufacturer warranties.
  • Fast, Reliable Shipping: Shipped from U.S. warehouses with quick, dependable freight options — keeping your project on track.
  • 30-Day Hassle-Free Returns: Changed your mind? Enjoy a simple 30-day return process for peace of mind.
  • Real Human Support, 7 Days a Week: Reach us by phone, email, or live chat — no bots, no overseas call centers, just experts who know off-grid power systems.
  • Expert Energy Guidance: Our solar and backup energy specialists are here to help with system design, product questions, and installation tips.
  • USA-Based Service: Local, knowledgeable, and friendly support right here in the U.S.
  • Secure Payments: Shop confidently with encrypted, secure checkout protecting your personal and payment information.
  • Built for Energy Independence: Whether powering a cabin, prepping for emergencies, or going off-grid, our products are chosen for performance, reliability, and sustainability.

BigBattery NEXUS 48V 15kWH LiFePO4 Battery

$2,980.00