Description
The Fox ESS 3.96 kWh LFP Battery Module delivers safe, reliable, and scalable energy storage for residential and light commercial applications. Built with advanced Lithium Iron Phosphate (LiFePO₄) chemistry, it ensures long cycle life, excellent thermal stability, and superior safety performance.
This modular Fox ESS battery is a smart choice for homeowners and businesses seeking reliable backup power, time-of-use energy savings, and greater independence from the grid. Each 3.96 kWh module can be stacked in parallel—ranging from 2 to 5 units—to create a flexible storage system from 7.9 kWh up to 19.8 kWh total capacity. Whether you’re starting small or planning for future expansion, the modular design makes it easy to scale your system to meet growing energy demands. Order online or by PHONE 888-498-3331
Product Highlights
- Stackable Design: Combine 2–5 modules for 7.9–19.8 kWh of usable capacity
- Advanced Lithium Iron Phosphate (LFP) technology ensures safety, durability, and efficiency
- Seamlessly pairs with Fox ESS inverters and energy management systems
- Long battery life of up to 6,000 cycles at 90% depth of discharge for dependable long-term use
Parts / Specifications
Manufacturer: |
Fox ESS |
Model Number: |
AIO EQ4000 |
Battery Type: |
LiFePO4 Prismatic Cell |
Nominal Voltage: |
115.2 V |
Rated kWh Capacity: |
3.96 kWh per module |
DC Voltage Range: |
97.2 VDC to 131.4 VDC |
Depth of Discharge: |
90% |
Dimensions, stack of 3: |
H 13” x W 22.4” x D 15” |
Weight: |
71.5 lbs per module |
IP Rating: |
IP65 rating |
Storage Temperature: |
-4° to 131° F / 20° to 55° C |
Mounting: |
Outdoor / Indoor (Stand) |
Warranty: |
12.5 years |
Efficiency Rating: |
>95% |
Certifications: |
UL1973, UL9540, UL9540A |
