A Fox ESS PowerQ AIO system typically consist a 11.4kW hybrid inverter, PowerQ EQ4000 LFP battery modules, and a Smart Hub G2 energy management gateway. Exact bundle contents vary by product page.

Many Fox ESS systems are modular and support battery expansion within qualified configurations. Check the product page and installation documentation before adding battery modules or parallel stacks.

No. PowerQ battery modules and ECS4000 battery modules are different battery families and should not be mixed in the same battery stack.

The ECS CM4000 is the master battery module with the battery management system. ECS CS4000 modules are slave modules used to expand the ECS4000 battery stack.

Qualified Fox ESS PowerQ or H1 plus ECS4000 systems can support backup operation when configured with the required gateway, batteries, wiring, transfer equipment, and installer-approved load plan.

A FOX ESS PowerQ AIO system includes the Fox ESS PowerQ 11.4kW Hybrid Inverter , Fox ESS AIO 3.97kWh Lithium Iron phosphate battery modules, the system will consist of 2 up to 7 units in one battery stack. FOX ESS Smart HUB G2 for a energy management gateway.

Yes — PowerQ is designed to meet various backup scenarios via modular system design and scalability. You can expand your system up to 80kWh backup capacity.

The ECS CM4000 is a master battery module with built-in BMS, the ECS CS4000 is a slave battery module to expand the battery system. They consist of the Fox ESS ECS 4000 battery storage system.

No, the PowerQ battery module and ECS 4000 battery module can't be mixed use. They are different battery module. Please contact us if you can't confirm which battery modules your system need.

There are several difference between PowerQ AIO system and ECS4000 system:
- The PowerQ AIO system's inverter is modular design and stack with the PowerQ battery module, and plug-and-play for installation, no cable wiring. The ECS4000 battery system need to work with FOX ESS H1 series hybrid inverter, this inverter need to hook to the wall and connect to ECS 4000 battery with cable.

- They use different battery modules.
The PowerQ AIO system use EQ4000 4kWh battery module. The ECS4000 system use CM4000 ( with built-in BMS ) and CS4000 4kWh battery modules.

The Fox ESS H1 series hybrid inverter is compatible with FOX ESS ECS 4000 battery storage system and certified UL9540.

Yes, you can hook FOX ESS ECS 4000 battery storage system and smart hub G2 to backup your home during power outage.

The FOX ESS PowerQ AIO system and ECS 4000 system are full certified, including UL9540 for system, UL1741 for certification and CEC Listed status as certified by the manufacturer. Battery modules carry UL9540 and UL9540A for battery module, UL1741for hybrid inverter. It is also CEC listed and qualified SGIP program.

The FOX ESS Smart hub G2 is a smart energy management gateway, have automatic transfer switch ( ATS ) Integrated for the system on/off grid transition. It also has smart load circuit and generator compatibility. So it is necessary for your system if you want to have your system keeping running during power outage. However, you don't need to install it if your solar system is only a grid-tie system without battery backup.

All the FOX ESS battery, inverter and smart hub G2 are 12.5 years warranty. Contact Self2Solar for full warranty documentation and details.

Self2Solar is FOX ESS's authorized distributor and stocking a wide range of FOX ESS PowerQ system, ECS 4000, Fox ESS H1 hybrid inverter and other components. Our US-based solar advisors are available for pre-sale system sizing and system commissioning support. Contact us through the Self2Solar website and email. Free shipping on all system bundles, fulfilled within 2–3 business days.