Fox ESS has launched the CQ6 high-voltage storage battery, designed to deliver higher energy density in a compact, stackable format for residential and commercial applications in Australia.

The CQ6 offers up to 48kWh using eight units in a single stack, aligning with the upper eligibility limits of the Cheaper Home Batteries Program. Its compact design supports efficient use of space while delivering reliable energy storage for homes and businesses.

With more than 95% round-trip efficiency and 100% depth of discharge, the CQ6 is designed to maximise usable energy and support faster payback. Installation time is reduced through a streamlined form factor, saving up to one to two hours compared to traditional battery systems.

The system is compatible with the full Fox ESS inverter range, including the H1-G2, KH/HA Series and H3 Series. Each 5.99kWh module can be stacked up to 14 units, providing capacities from 11.98kWh to 83.86kWh per stack. When paired with the H3 Plus inverter, up to three stacks can be combined for a total capacity of 251.58kWh.

“The CQ6’s high density and efficiency, along with modular scalability, make it perfect for homes and businesses aiming to maximise solar self-consumption and reduce reliance on the grid, especially as daytime electricity becomes more abundant and affordable,” Smart Energy Council chief executive John Grimes says.

The CQ6 is designed to align with recent updates to the Cheaper Home Batteries Program and the upcoming Solar Sharer Offer, due to launch on 1 July 2026. The system supports participation in virtual power plants and is compatible with platforms including Amber, Evergen and Synergy.

“These updates are crucial for accelerating Australia’s clean energy transition and enabling households and businesses to achieve real energy independence,” Fox ESS chief executive Michael Zhu says.