Fox ESS · 2.88 kWh · 1-phase HV battery slave
Fox ESS EQ2900 2.88kWh HV battery (slave)
Capacity in small steps is the EQ2900 slave's whole job: a 2.88kWh HV module for installers who size Fox ESS EQ towers block by block. It extends an existing EQ stack or builds out a new one in measured increments, always under a master unit.
Description
As a slave module it does not operate alone: every EQ stack starts with a master, and slaves like this one bolt capacity onto it. That granularity is the point. When a customer wants a modest top-up rather than a second tower, one slave module keeps the quote lean and the van load light. Buying it here works the trade way: the ex-VAT price on this page is the rate your account pays, from UK stock.
Specification
| Brand | Fox ESS |
|---|---|
| Part number | FE-HV-EQS-2900 |
| 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) |
Datasheets & manuals
What it pairs with
Stack it under the Fox EQ2900 master (FE-HV-EQM-2900), the control module every EQ2900 tower starts from, and size upwards with further EQ2900 slaves as the design demands. It belongs to the Fox ESS high-voltage ecosystem, so the family-level partner is a Fox hybrid inverter. Confirm module counts and firmware pairing against the current Fox ESS stacking list for your master revision.
Single-phase ecosystem, and a master unit is required in every stack. This module adds capacity only. For anything this page can't settle, ask the trade desk before ordering or consult a competent installer.
Often bought alongside
Last updated 2026-09-08