Clarios has confirmed its acquisition of Maxwell Technologies, a US-based manufacturer of supercapacitor cells and modules used across mobility, grid and onsite power applications.
The deal marks a strategic expansion of Clarios’ capabilities in short-duration, high-performance energy storage.
Unlike conventional batteries, supercapacitors offer near-instant charge and discharge, making them ideal for capturing surplus energy and supporting systems during peak demand surges. With up to 1 million cycles, robust temperature tolerance (-40°C to +65°C), and no need for maintenance or fire-risk mitigation, they present a compelling alternative for demanding environments.
Clarios aims to reinforce supply chain stability for its US and global OE customers, while aligning the acquisition with its leadership in battery circularity and low-voltage energy solutions. Maxwell’s legacy includes over 85 million supercapacitor cells shipped, with applications spanning energy generation, grid stabilisation, automotive, transport and industrial automation.
“Maxwell’s supercapacitors are designed to provide customers with high-power energy storage solutions that emphasise reliability, safety and long life,” said Mark Wallace, CEO of Clarios. “This integration strengthens our ability to serve our automotive customers and creates a long-term opportunity to expand our presence in non-automotive sectors. Maxwell’s existing customer relationships in data centers, grid, military and industrial applications will be maintained and actively developed under Clarios’ leadership.”
Maxwell Technologies will continue to operate as an independent business unit under Clarios’ ownership.
