Fox ESS · 2.88 kWh · 1-phase HV battery slave · type A
Fox ECS 2.88kWh HV battery slave (type A)
When a customer with an ECS tower on connector A hardware comes back asking for more storage, this 2.88kWh V2.0 slave module is the part that answers the call. It adds capacity under an existing ECS master, which makes it retrofit stock first and foremost.
Description
Top-up work is quick margin when the part matches first time, and the connector letter is the detail that decides it. This slave exists for connector A systems specifically, so identify the tower's build before ordering and the visit becomes a mount, cable and commission job rather than a return trip. At 2.88kWh per module you can offer the customer an increase sized to their actual shortfall, one or two blocks at a time, instead of selling capacity they will never cycle.
Specification
| Brand | Fox ESS |
|---|---|
| Part number | FE-HV-ECS-2900-4A2C |
| Capacity | 2.88 kWh |
| Phase | Single-phase |
| Condition | New |
| Category | Battery modules · Li-ion Battery Pack |
| Delivery method | Pallet freight (UN3480 Class 9 dangerous goods) |
What it pairs with
It pairs with the Fox ECS 2.88kWh connector A master (FE-HV-ECM-2900-4A2C) and only runs under a master. Fox's HV BMS-V2 covers the communication side of the same battery range, and the wider family partner is a Fox hybrid inverter. Because slave counts and revisions are model-specific, size the tower from Fox ESS's current stacking list rather than assumption.
Adds capacity only; a compatible master must head the stack. Connector A build, single-phase ecosystem. For anything this page can't settle, ask the trade desk before ordering or consult a competent installer.
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Last updated 2026-09-08