Fox ESS PowerQ AIO EQ4000 Battery Module
- Hybrid PV Input Up to 22.8kW per PowerQ
 - LFP Battery, Up to 20kWh per PowerQ
 - Scalable Up to 4 Units, Totally Up to 80kWh Backup Capacity
 - Both Wi-Fi & 4G Communication Available
 - LRA Up to 110A
 - Multiple Energy Operation Modes
 - Compatible with Generator with Fox Hub G2
 
See the specs >
August Sale:
- 5% Off with coupon code: AUG5
The EQ4000 is a high-voltage, modular lithium iron phosphate (LiFePO₄) battery module designed to expand storage capacity in Fox PowerQ AIO systems—a hybrid inverter and battery solution. It’s intended for zero-tool, plug-and-play installation, enhancing flexibility and scaling in clean energy storage deployments.
Each module provides 3.97 kWh of usable energy and allows stacking 2 to 5 modules for a total of up to 19.85 kWh per AIO unit.
Product Overview
| Total energy | 3.97kWh | 
| Module Qty | 1 Battery modules | 
| Max. Continuous power | 11.4kW | 
| Max. PV input voltage | 600V | 
| Easy Scalable | Max to 5 Modules up to 19.85kWh | 
| Dimensions(W*H*D) | 18.9*14.2*9.2 inch (480*360*233 mm) | 
| Weight | Battery module: 81.35 lbs/36.9 kg | 
| Mounting | Ground mount | 
| Safety and EMC | 
UL9540A, UL9540, UL1973, UL1741 SA, UL 1741 SB, UL1741 CRD, CSA C22.2 No.107.1-16, UL1998, UL1699B, HECO SRD-V2.0; IEEE1547-2018, IEEE1547a-2020, IEEE1547.1-2020, Rule21; FCC part15 CLASS B  | 
| Warranty | 12.5 Years | 
Key Features
- Hybird PV Input Up to 22.8kW per PowerQ
 - LFP Battery, Up to 20kWh per PowerQ
 - Scalable Up to 4 Units, Totally Up to 80kWh Backup Capacity
 - Both Wi-Fi & 4G Communication Available
 - LRA Up to 110A
 - Multiple Energy Operation Modes
 - Compatible with Generator with Fox Hub G2
 
Product Specifications
- Max. PV input voltage: 600V
 - MPPT Voltage Range: 80 ~ 550V
 - Max. PV input current per MPPT: 28/14/14
 - MPPT & Strings: 3 (MPPT 1: 2 Strings; MPPT 2&3: 1 String)
 - Max. Continuous AC Out current : 47.5A
 - CEC efficiency (PV): 97%
 - Enclosure rating: Type 4X
 - Cooling Method: Natural convection
 - Display: LED, App, Website
 - Communication Protocol:  WiFi, 4G, LAN
 - Interface: CAN2.0, RS485, Meter, CT, ISO alarm, SUNSPEC
 
Shipping and Packaging
- The battery can only ship via freight truck
 
Download
Datasheet
FoxESS PowerQ-datasheet-US-Mainland-V1.0-2.27.pdf
FoxESS_AIO_H1_AC1_Datasheet_US_Mainland_-compressed.pdf
User Manual
Fox-ESS-PowerQ-User-Manual-ESSwith-hub-V1.0a.pdf
Certification
Fox_PowerQ_UL9540.pdf
Fox_PowerQ_UL1973.pdf
Fox_PowerQ_UL1741.pdf
Fox_CoFC_80112280_EN.pdf
HUB &WiFi
Fox Hub-G2 Datasheet
Fox Smart WiFi Datasheet
FoxESS Cloud User Manual
About FOX ESS
FOX ESS is a leading provider of advanced energy storage solutions that empower customers to optimize their energy usage, reduce their carbon footprint, and enhance their energy independence. Founded in 2016, 15% of FOX ESS staff are engineers with a core R&D center base in Shang Hai. FOX ESS has developed a wide range of energy storage products and services that cater to the needs of various industries, including residential-use, utilities, commercial, and industrial customers. FOX ESS is committed to delivering innovative, reliable, and cost-effective energy storage solutions that meet the evolving needs of the energy market. With a global team of experienced engineers and energy experts, the primary markets of FOX ESS include Germany, Italy, the UK, Brazil, Poland, and the US.
         
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