Fox ESS · 1-phase Li-ion battery pack · slave module · promo stock
Fox ESS CQ7 battery module (slave)
Every CQ7 stack past one module needs this slave unit, drawn from the same promotional allocation as the master, for installers covering complete systems while the offer lasts. Ordering the expansion capacity now means the stack you quote next month is already on the shelf.
Delivery in 3–5 working days (estimate). The dispatch clock starts at cleared payment.
Description
Slaves carry the extra capacity in a CQ7 system while the master runs the show, so the sensible promo play is to take masters and slaves in the same order and land complete stacks on the offer. There is a practical reason to do it now rather than later: this allocation is promotional stock only, and once it closes the listing ends with it. If CQ7 systems are in your pipeline, count the modules each job needs and cover the lot in one go.
Specification
| Brand | Fox ESS |
|---|---|
| Part number | FE-CQ7-S |
| Phase | Single-phase |
| Condition | New |
| Category | Batteries · Li-ion Battery Pack |
| Delivery method | Pallet freight (UN3480 Class 9 dangerous goods) |
What it pairs with
It runs under the Fox ESS CQ7 master, listed here from the same promo allocation, and cannot operate without one. Beyond the stack itself, the wider match is Fox ESS hybrid inverters at family level. Because pairing depends on model and firmware revisions, verify your exact master, slave and inverter combination against Fox ESS's current stacking list before ordering for a job.
A slave module only: it adds capacity to a CQ7 stack and does nothing on its own. Promotional stock, gone when the allocation sells through. 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