BigBattery 48V NEXUS 14.3kWh LiFePO4 Battery | Off-Grid Home Backup
BigBattery 48V NEXUS 14.3kWh LiFePO4 Battery | Off-Grid Home Backup
SKU: F-NXUS-48150-G1
- Regular price
- Price: $2,980.00
- Regular price
- List Price: $2,999.00
- Sale price
- Price: $2,980.00
- Unit price
- / per
Found a lower price?
We'll match any verified competitor price — just share the listing with us before you buy.
Notify me when this product is available:
Low stock
Couldn't load pickup availability
- Free Shipping on Orders >$6K
- Easy 30 Day Returns
Why Buy From PowerGen Store
Why Buy From PowerGen Store
Authorized Dealer
100% genuine products with manufacturer warranty.
Free Fast Shipping
On most orders across the U.S.
Expert Support
Real people ready to help you choose. Based in USA
Secure Checkout
Safe encrypted payments you can trust.
Easy Returns
Simple returns on eligible orders.
Trusted Nationwide
Customers rely on PowerGen for dependable solutions.
Price Guarantee
Price Guarantee
At PowerGen Store, we are committed to offering you the best prices online. If you find a lower price at another online store within two months of your purchase, just let us know.
Click Here to review full Price Guarantee Policy
Manufactures Warranty
Manufactures Warranty
PowerGen Store is an Authorized Dealer for all of our Suppliers, so every product you purchase includes the Full Manufactures Warranty provided directly by the Manufacturer. See Manufactures Website for More Details
Return Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
Click Here to review our full Returns Policy
Shipping Policy
Shipping Policy
At PowerGen Store, we are dedicated to ensuring our customers enjoy a smooth and efficient shipping experience. As a special benefit for our valued customers, we are pleased to offer FREE SHIPPING in the Contiguous 48 United States (See below for Alaska & Hawaii). To guarantee timely delivery of your orders, we have built a comprehensive network of couriers. Please see the detailed information below regarding our shipping Policy.
Click Here to read out full Shipping Policy
PRODUCT DESCRIPTION
Description
BigBattery 48V NEXUS 14.3kWh LiFePO4 Battery | Off-Grid Home Backup
Product Description
The BigBattery 48V NEXUS 14.3kWh LiFePO4 Battery is a cost-effective, high-capacity energy storage solution designed for off-grid homes, cabins, and backup power systems. Its compact, portable, floor-standing design allows for flexible installation in garages, utility rooms, cabins, or sheds without complex wall mounting.
Powered by advanced LiFePO4 battery chemistry, the NEXUS delivers dependable, uninterrupted power with long service life, enhanced safety, and consistent performance. An integrated Battery Management System (BMS), self-heating function, and built-in aerosol fire suppression provide reliable operation in a wide range of conditions. Expandable up to 214.5kWh, it is built to grow with your energy storage needs.
Key Features
- 14.3kWh LiFePO4 battery module for high-capacity energy storage
- Designed for off-grid homes, cabins, and backup power systems
- Advanced LiFePO4 battery chemistry for long service life and enhanced safety
- 6,000+ cycle life for years of daily use
- Integrated Battery Management System (BMS) with multi-layer protection
- Self-heating function for reliable cold-weather performance
- Integrated aerosol thermal suppression system for added safety
- Modular design expands from 14.3kWh up to 214.5kWh
- Compact, portable floor-standing design with flexible installation
- Maintenance-free operation
- Suitable for residential and commercial energy storage applications
- Supports off-grid installations





Specifications
| Specification | Details |
|---|---|
| Product Name | BigBattery 48V NEXUS 14.3kWh LiFePO4 Battery |
| Battery Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Battery Capacity | 14.3kWh |
| System Voltage | 48V |
| Cycle Life | 6,000+ Cycles |
| Expandable Capacity | Up to 214.5kWh |
| Battery Management | Integrated BMS with multi-layer protection |
| Self-Heating | Yes |
| Thermal Protection | Integrated Aerosol Thermal Suppression |
| Installation | Floor-Standing |
| Operation | Maintenance-Free |
| Applications | Off-grid homes, cabins, backup power systems, residential and commercial energy storage |
| Supports | Off-grid installations |
| Ships From | Texas, USA |
| Warranty | 12 Years |
| Technical Support | Lifetime USA-Based Tech Support |
FAQs
Q: What applications is the BigBattery NEXUS designed for?
A: It is designed for off-grid homes, cabins, backup power systems, and scalable residential and commercial energy storage applications.
Q: Can the NEXUS battery system be expanded?
A: Yes. The modular design can be expanded from 14.3kWh up to 214.5kWh.
Q: Does the battery include protection features?
A: Yes. It features an integrated Battery Management System (BMS) with multi-layer protection, self-heating for cold-weather operation, and integrated aerosol thermal suppression.
Q: Is maintenance required?
A: No. The NEXUS is designed for maintenance-free operation.
Q: Which inverters are compatible with the NEXUS?
A: The battery supports closed-loop communication with all BigBattery APEX Inverters and all EG4 Inverters for off-grid, non-UL 9540 installations.
