Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00045-00
MPN No: 97-223-00045-00
Expected ship date Nov 10 - 17
In Stock
$1,250.00
Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00045-00
Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00045-00
Regular price
$1,250
57 IN STOCK
Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00045-00
Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00045-00
Available
MPN No: 97-223-00045-00
Regular price
$1,250
Expected ship date Nov 10 - 17
Data Sheet
U.S. Warehouse
Trusted by Thousands
Expert U.S. Support
Regular price
$1,250
Fox ESS 3.97kWh Lithium Iron Phosphate Battery Module 97-223-00045-00
MPN No:
97-223-00045-00
Expected ship date Nov 10 - 17
Fox ESS EQ4000 3.97kWh Lithium Iron Phosphate Battery Module
Stackable High-Voltage Solar Battery for Fox ESS PowerQ Energy Storage Systems
3.97kWh Capacity | LiFePO4 Chemistry | 90% Depth of Discharge | High-Voltage Battery
The Fox ESS EQ4000 is a modular lithium iron phosphate (LiFePO4) battery designed for compatible Fox ESS PowerQ all-in-one hybrid inverter systems. Featuring a stackable design, high-voltage operation, and expandable energy storage capacity, the EQ4000 provides a flexible solution for residential solar battery storage, backup power, and energy management.
Important: A minimum of two EQ4000 battery modules is required for a compatible PowerQ installation. This listing includes one 3.97kWh battery module only. The module cannot operate independently.
Product Highlights
- 3.97kWh nominal energy capacity: Modular energy storage for compatible Fox ESS systems.
- LiFePO4 battery chemistry: Lithium iron phosphate technology designed for long service life and thermal stability.
- Expandable capacity: Stack 2 to 5 modules per compatible PowerQ inverter.
- 7.94kWh to 19.85kWh: Nominal storage capacity range per supported battery stack.
- 90% depth of discharge: Designed to make a substantial portion of stored energy available.
- Greater than 95% round-trip efficiency: Efficient battery charge and discharge operation.
- High-voltage architecture: Supports compatible PowerQ energy storage systems.
- Stackable installation: Modular design reduces external battery-to-battery cabling.
- CAN communication: Supports coordinated battery and inverter operation.
- Indoor and outdoor applications: Designed for compatible protected installations.
Manufacturer: Fox ESS
Model: EQ4000 / AIO EQ4000
Manufacturer Part Number: 97-223-00045-00
Fox ESS EQ4000: Expandable Home Battery Storage
The Fox ESS EQ4000 is designed to provide scalable energy storage for residential solar systems using compatible Fox ESS PowerQ hybrid inverters.
Each battery module provides approximately 3.97kWh of nominal storage capacity. Modules are connected in a vertical stack, allowing installers to configure the storage system around the homeowner's electricity consumption, backup requirements, and available installation space.
With lithium iron phosphate battery chemistry, the EQ4000 is engineered for repeated charging and discharging while supporting long-term energy storage applications.
The modular design allows additional compatible EQ4000 modules to be added within the manufacturer's supported configuration limits.
When paired with an approved PowerQ inverter and the required system equipment, the battery can support solar energy storage, increased self-consumption, time-of-use energy management, and backup power applications.
Expandable Storage from 7.94kWh to 19.85kWh
The EQ4000 uses a stackable battery architecture designed to provide flexible storage capacity.
Compatible PowerQ systems require a minimum of two battery modules and support up to five modules per inverter in the specified configuration.
| Battery Modules | Nominal Storage Capacity |
|---|---|
| 1 Module | 3.97kWh – Not a standalone operating configuration |
| 2 Modules | 7.94kWh |
| 3 Modules | 11.91kWh |
| 4 Modules | 15.88kWh |
| 5 Modules | 19.85kWh |
These capacities represent nominal stored energy. Actual usable energy depends on the system's operating limits, depth of discharge, temperature, and inverter configuration.
Minimum Battery Requirement: The Fox ESS EQ4000 is not designed to operate as a single standalone battery. A compatible PowerQ inverter requires at least two EQ4000 modules, along with the appropriate installation base and system equipment.
Lithium Iron Phosphate Battery Technology
The EQ4000 uses lithium iron phosphate (LFP or LiFePO4) battery chemistry, widely used in stationary energy storage applications.
LiFePO4 Battery Advantages
- Long cycle life: Designed for frequent charge and discharge operation.
- Thermal stability: LFP chemistry offers favorable thermal characteristics compared with several other lithium-ion chemistries.
- Daily energy storage: Suitable for compatible solar self-consumption applications.
- High energy efficiency: Helps reduce energy losses during battery cycling.
- Modular expansion: Storage capacity can be increased using additional approved modules.
- Low routine maintenance: No traditional lead-acid battery watering or electrolyte maintenance.
The battery management and inverter controls coordinate charging, discharging, and protection functions within the approved PowerQ system.
Designed for Fox ESS PowerQ Hybrid Inverters
The EQ4000 battery module is intended for the Fox ESS PowerQ all-in-one energy storage platform.
Compatible PowerQ systems combine solar inverter functionality, battery management, and high-voltage energy storage in a modular residential solution.
System Benefits
- Integrated system architecture: Designed for approved Fox ESS PowerQ hybrid inverter configurations.
- Solar energy storage: Store compatible solar-generated electricity for later use.
- Backup power capability: Supports backup applications when paired with the required inverter and backup equipment.
- Energy management: Supports compatible time-of-use and self-consumption operating strategies.
- Expandable design: Allows supported battery capacity increases.
- Coordinated communication: CAN communication between compatible battery and inverter equipment.
Compatibility Restriction: The EQ4000 is designed for the specified PowerQ platform. It is not interchangeable with Fox ESS ECS4000 battery modules or automatically compatible with other Fox ESS inverter families.
High-Voltage Battery Performance
The EQ4000 is part of a high-voltage battery system in which the operating voltage increases as additional battery modules are connected in series.
The supported system configuration provides higher DC operating voltage than conventional 48V battery banks.
Performance Features
- 3.97kWh nominal capacity per module
- 90% depth of discharge
- Greater than 95% battery round-trip efficiency
- 50A maximum charge/discharge current
- 65A peak discharge current for up to 60 seconds
- CAN communication interface
- High-voltage series-connected battery stack
Maximum available backup output depends on the PowerQ inverter model, number of installed modules, operating conditions, and system configuration.
Indoor and Outdoor Installation
The Fox ESS EQ4000 is designed for floor-standing, stackable installation as part of an approved PowerQ system.
Its enclosed battery construction supports installation in suitable indoor or outdoor environments when manufacturer requirements are followed.
Installation Considerations
- Install on a suitable, level support surface.
- Use the approved PowerQ inverter and battery base.
- Follow manufacturer stacking and fastening instructions.
- Maintain required clearances and environmental conditions.
- Protect the installation from conditions outside the specified operating range.
- Verify all applicable electrical and energy storage permitting requirements.
- Use qualified installation personnel familiar with high-voltage battery systems.
Perfect For
- Fox ESS PowerQ residential energy storage installations
- Expanding compatible PowerQ battery capacity
- Residential solar self-consumption
- Time-of-use electricity management
- Compatible home backup power systems
- New solar-plus-storage projects
- Homeowners seeking modular battery expansion
- Solar installers building approved Fox ESS PowerQ systems
Product Specifications
| Specification | Details |
|---|---|
| Manufacturer | Fox ESS |
| Model | AIO EQ4000 |
| Manufacturer Part Number | 97-223-00045-00 |
| Product Type | High-Voltage Battery Module |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO4 / LFP) |
| Nominal Energy Capacity | 3.97kWh per Module |
| Depth of Discharge | 90% |
| Battery Round-Trip Efficiency | Greater Than 95% |
| Maximum Charge/Discharge Current | 50A |
| Peak Discharge Current | 65A for 60 Seconds |
| Communication | CAN |
| Minimum Modules per Stack | 2 |
| Maximum Modules per PowerQ Stack | 5 |
| Minimum Nominal Stack Capacity | 7.94kWh |
| Maximum Nominal Stack Capacity | 19.85kWh |
| Compatible Inverter Platform | Fox ESS PowerQ All-in-One |
| Battery Module Weight | 81.35 lbs (36.9kg) |
| Installation Type | Floor-Standing Stack |
| Enclosure Protection | IP65 (EQ4000 Module Specification) |
| Battery Communication | CAN Bus |
| Battery Management | Integrated with Approved PowerQ System |
| Safety Standards | UL 1973; UL 9540 System Listing and UL 9540A Testing as Applicable to Approved Configurations |
| Transportation Testing | UN 38.3 |
| Inverter Included | No |
| Additional Battery Modules Included | No |
| Installation Base Included | Not Specified as Included |
Important Installation and Compatibility Notes
- One battery module per purchase: This listing is for a single EQ4000 module with 3.97kWh nominal capacity.
- Two-module minimum: A compatible PowerQ system requires at least two battery modules.
- Five-module maximum: The supported configuration allows up to five modules per PowerQ inverter stack.
- PowerQ compatibility: Confirm the exact PowerQ inverter model and approved battery configuration before purchasing.
- Not a 48V battery: The EQ4000 is part of a high-voltage energy storage system.
- Not standalone: It cannot independently power household loads or operate as a complete battery system.
- Backup power requires additional equipment: A compatible inverter and properly configured backup system are necessary.
- Battery expansion: Follow Fox ESS requirements for module compatibility, commissioning, and expansion of existing battery stacks.
- High-voltage safety: Installation must follow manufacturer instructions and applicable electrical and energy storage codes.
Frequently Asked Questions
What is the Fox ESS EQ4000 battery module?
The Fox ESS EQ4000 is a 3.97kWh lithium iron phosphate high-voltage battery module designed for compatible Fox ESS PowerQ all-in-one energy storage systems. Multiple modules are stacked to create a complete battery system.
How much energy does one EQ4000 battery store?
Each EQ4000 module provides approximately 3.97kWh of nominal energy storage capacity. The amount of usable energy depends on the battery's operating limits and system configuration.
Can the Fox ESS EQ4000 operate with only one battery module?
No. The compatible PowerQ configuration requires a minimum of two EQ4000 battery modules. A single module cannot operate as a complete PowerQ battery system.
What is the minimum battery capacity for a PowerQ system?
The minimum supported configuration uses two EQ4000 modules, providing approximately 7.94kWh of nominal storage capacity.
How many EQ4000 batteries can be stacked together?
Compatible PowerQ configurations support 2 to 5 EQ4000 modules per inverter stack, providing approximately 7.94kWh to 19.85kWh of nominal storage capacity.
What inverters are compatible with this battery?
The EQ4000 module is designed for compatible Fox ESS PowerQ all-in-one hybrid inverters. Confirm the exact inverter model and approved configuration before purchase.
Can I use this battery with a Fox ESS ECS4000 system?
No. The EQ4000 and ECS4000 are different Fox ESS battery product families. Modules should not be interchanged unless Fox ESS explicitly approves the exact combination.
Can this battery work with a Sol-Ark, EG4, or other inverter brand?
The EQ4000 is specified for the compatible Fox ESS PowerQ platform. Compatibility with other inverter brands should not be assumed. Use only manufacturer-approved battery and inverter combinations.
Is the Fox ESS EQ4000 a 48V battery?
No. The EQ4000 is a high-voltage battery module intended to operate in a series-connected PowerQ battery stack. It is not a standalone 48V battery.
What battery chemistry does the EQ4000 use?
The EQ4000 uses lithium iron phosphate (LiFePO4 or LFP) chemistry, which is commonly used for stationary solar energy storage applications.
What is the depth of discharge?
The EQ4000 has a published 90% depth of discharge. This describes the portion of nominal stored energy available within the battery's specified operating limits.
Can I expand my existing Fox ESS battery system?
Potentially. Additional EQ4000 modules may be added to compatible PowerQ installations within the manufacturer's supported configuration limits. Verify module compatibility, commissioning requirements, and the existing battery stack before expansion.
Can the EQ4000 provide backup power during an outage?
When installed as part of a properly configured Fox ESS PowerQ system with the necessary backup equipment, EQ4000 battery storage can support compatible backup loads. The battery module alone cannot provide AC backup power.
Can the battery store electricity from solar panels?
Yes. When paired with a compatible PowerQ hybrid inverter and solar array, the EQ4000 battery system can store solar-generated electricity for later use.
How much does one EQ4000 battery module weigh?
The Fox ESS PowerQ manufacturer datasheet lists an individual battery module weight of approximately 81.35 lbs (36.9kg), excluding additional shipping packaging.
Can the Fox ESS EQ4000 be installed outdoors?
The EQ4000 is designed for suitable indoor and outdoor installations when used in an approved system. Follow Fox ESS requirements for mounting, temperature, enclosure protection, clearances, and environmental exposure.
Is the EQ4000 UL certified?
Fox ESS PowerQ documentation identifies UL 1973, UL 9540, and UL 9540A-related safety compliance. UL 9540 applies to approved energy storage system configurations rather than establishing that any standalone module can be paired with any inverter. Verify the exact system listing for the proposed installation.
Does this listing include the PowerQ inverter?
No. This product includes one Fox ESS EQ4000 3.97kWh battery module. The compatible PowerQ inverter, additional required modules, and other system equipment are sold separately.
Does the battery include a built-in inverter?
No. The EQ4000 is a DC battery module. A compatible PowerQ inverter is required to convert stored DC electricity into usable AC power.
Is this battery suitable for a new solar installation?
Yes, when specified as part of a complete compatible Fox ESS PowerQ solar-plus-storage system. The system must include the required inverter, minimum battery quantity, installation hardware, electrical protection, and approved configuration.
Product information is based on Fox ESS PowerQ manufacturer documentation and product identification for MPN 97-223-00045-00. Confirm the current EQ4000 installation manual, inverter compatibility, certification records, and included accessories before ordering or installing. Battery capacities are nominal and actual usable energy may vary.
