Fox ESS · 18.64 kWh · HV stack, 1 master + 3 slaves
Fox ESS EQ4800-L4 18.64kWh HV battery stack
Households that have outgrown a smaller battery are where the EQ4800-L4 fits. It bundles one Fox ESS master and three slave modules into an 18.64kWh high-voltage stack, a natural capacity step when a retrofit brings bigger loads into the design.
Delivery in 3–5 working days (estimate). The dispatch clock starts at cleared payment.
Description
Retrofit work punishes vague parts lists, and the L4 answers that with one code for a known configuration: master plus three slaves, 18.64kWh. Quoting against an existing system becomes a clean swap-or-supplement decision rather than a module-by-module count. It also gives surveyors a fixed rung between the L3 below and the L5 above, so upsizing a design mid-project is a one-line change on the order. As with everything here, the ex-VAT trade price applies from the first unit, with UK stock behind it.
Specification
| Brand | Fox ESS |
|---|---|
| Part number | FE-HV-EQ-4-4.8-19.2 |
| Capacity | 18.64 kWh |
| Phase | Single-phase |
| Condition | New |
| Category | Batteries · Li-ion Battery Pack |
| Delivery method | Pallet freight (UN3480 Class 9 dangerous goods) |
What it pairs with
Pair it at family level with Fox ESS single-phase hybrid inverters such as the H1 Gen 2 or K series models. If the design later needs more capacity, EQ4800 slave modules (FE-HV-EQS-4800) extend the same master. EQ stacking depends on module count and firmware revision, so check Fox's current stacking list for the master you are using.
Single-phase listing with a fixed one-master, three-slave build. Capacity above 18.64kWh means adding EQ slave modules rather than swapping the bundle. For anything this page can't settle, ask the trade desk before ordering or consult a competent installer.
Often bought alongside
Last updated 2026-07-19