Overview
The FoxESS CQ6 12kWh represents FoxESS’s updated residential battery platform, incorporating improved battery management system technology and an enhanced warranty commitment. At $7,000 for 11.98kWh and a 12-year product warranty, it compares favourably to the 10-year standard offered by most competitors.
The CQ6 targets homeowners who want both cost efficiency and the security of a longer warranty horizon — a combination that is usually available only at higher price points (Enphase at 15 years costs significantly more per kWh).
Pricing & Installation
Indicative installed cost: $10,500–$14,000
Pairing with a FoxESS H3 or AC3 hybrid inverter creates a complete system. FoxESS offers competitive installer pricing through its distributor network. Total system costs including inverter and installation are competitive with mid-range Sungrow and BYD configurations.
Performance & Output
5kW continuous / 10kW peak output. Identical to the EQ5 in power output terms. The 95% round-trip efficiency is standard for LFP at this tier.
The notable specification is 100% depth of discharge — FoxESS rates the CQ6 for full discharge without cycle life degradation, unlike some competitors that recommend keeping a buffer of 10–20%.
Storage Capacity
11.98kWh usable (at 100% DoD) suits most 3-person households. Seven-module expansion capability provides headroom for growth.
Backup & Blackout Protection
Grid-forming capability, IP65 outdoor rating, and the same -25°C to 60°C temperature range as the EQ5. The wider operating temperature range makes FoxESS batteries particularly well-suited for extreme-climate Australian installations.
Compatibility
DC-coupled for FoxESS hybrid inverters. AC coupling technically feasible but best integration requires FoxESS hardware.
Warranty & Support
12-year product warranty — two years beyond the standard 10-year term offered by most competitors. This is a genuine differentiator for buyers focused on long-term ownership security.
Verdict
The FoxESS CQ6 is the more compelling of the two FoxESS options, primarily due to the 12-year warranty and 100% DoD specification. For homeowners building a FoxESS system, it is worth the modest $500 premium over the EQ5.
Best for: FoxESS ecosystem builds, long-term ownership-focused buyers, harsh-climate installations.
Frequently Asked Questions
What does 100% depth of discharge mean in practice? You can use all 11.98kWh in the battery without reducing its lifespan. Many competitors specify only 80–90% usable capacity to protect battery longevity. FoxESS achieves 100% DoD through enhanced BMS and cell engineering.
Is the 12-year warranty different from a cycle warranty? The 12-year covers product defects and capacity degradation to a minimum threshold. Cycle-based warranties (used by Tesla, Enphase) additionally specify a minimum energy throughput. Both approaches are valid — the FoxESS 12-year gives a longer calendar protection period.
