FE-AC1-3.7 | Single-phase high-voltage AC charger inverter for Fox ESS battery systems, ideal for adding storage to existing solar PV.

Key Features

• Rated AC output / charge power: 3.7 kW single-phase.
• AC-coupled design – perfect for retrofit alongside existing PV inverters.
• Compatible with Fox high-voltage battery stacks (e.g. HV2600 / ECS / EP series, depending on configuration).
• High round‑trip efficiency with HV battery architecture.
• IP65 protection – suitable for indoor or outdoor wall mounting.
• Remote monitoring and configuration via FoxESS cloud app and web portal.
• Quiet operation, natural convection plus controlled fan cooling (model dependent).

Function & Application

This AC charger inverter is used to charge and discharge Fox high-voltage batteries from the AC side of the installation, working alongside an existing on‑grid PV inverter. It enables time-of-use tariff shifting, backup power (when combined with appropriate backup hardware) and increased self-consumption of solar generation.

Typical Electrical Characteristics

Rated AC Power	3,680 W
AC Nominal Voltage	220–240 V, single-phase
AC Nominal Frequency	50 / 60 Hz
Battery Type	High-voltage LiFePO₄ Fox ESS battery modules
Protection Rating	IP65
Communication	Battery CAN interface, Wi‑Fi / LAN via Fox accessories

Installation & Integration

• Wall-mounted, compact chassis for simple installation close to the consumer unit or battery stack.
• Integrates with Fox CT / meter accessories for export limitation and advanced energy management.
• Compatible with Fox ESS monitoring platform for live and historical performance data.

MPN: FE-AC1-3.7
Model: Fox ESS AC 3.7kW Charger Inverter Gen 2

Ideal for homeowners wanting to retrofit battery storage to an existing PV system, or build a flexible AC-coupled storage solution with the Fox ESS high-voltage battery range.