Clarios Expands Low Voltage Energy Storage with Acquisition of Maxwell Technologies

On November 12, 2025, Clarios, a global leader in low voltage energy storage solutions, officially announced the acquisition of Maxwell Technologies, a prominent manufacturer of supercapacitor cells and modules. This strategic move aims to bolster Clarios' capability in delivering high-performance energy storage solutions tailored for short-duration applications.

The Significance of the Acquisition

Maxwell Technologies specializes in supercapacitors, which provide rapid charging and discharging capabilities, making them an ideal choice for applications requiring quick bursts of power, such as data centers, grid support, and onsite power generation. Supercapacitors can sustain up to a million cycles and function effectively under extreme temperatures, ranging from -40°C to +65°C, while requiring minimal maintenance and posing no fire risk.

The acquisition is particularly beneficial for Clarios as it enhances their supply chain stability and strengthens their commitment to developing a supply chain specifically for supercapacitors, aiding both Original Equipment (OE) customers in the United States and globally.

Strengthening the Clarios Position

With this acquisition, Clarios not only maintains its industry leadership in low voltage battery lifecycle solutions but also aligns with its goal of innovating energy storage technologies. Mark Wallace, CEO of Clarios, emphasized that the supercapacitors produced by Maxwell are engineered to deliver reliable, safe, and long-lasting energy storage solutions for customers across various sectors.

Maxwell Technologies brings decades of experience in supercapacitor innovation to the table, having shipped over 85 million supercapacitor cells. Their technology is utilized in energy generation, grid stabilization, automotive applications, transportation, and industrial automation. This synergy will empower Clarios to offer next-generation energy storage solutions while balancing their commitment to sustainability and innovation.

Maintaining Client Relationships

Clarios plans to operate Maxwell Technologies as a standalone business within the United States, ensuring that existing client relationships in sectors like data centers, power grids, military, and industrial applications are maintained and actively nurtured. This strategic integration not only facilitates Clarios’ service to their automotive customers but also paves the way for expanding its footprint in non-automotive sectors.

About Clarios

Clarios leads the industry in advanced low voltage battery technologies that drive a plethora of vehicle types. With a workforce of approximately 18,000 employees across over 100 countries, Clarios emphasizes the importance of reliable aftermarket and OEM partnerships, providing expertise and security to enhance everyday lives. Their commitment to environmental sustainability is evident as they strive to ensure 100% of their products are recyclable, processing approximately 8,000 batteries every hour in their network.

About Maxwell Technologies

Maxwell Technologies is renowned for its innovative energy storage and power solutions, especially in the realm of supercapacitors. Their products find applications across numerous sectors, including automotive, data centers, power grids, military applications, and industrial automation. With this acquisition, Clarios is well-positioned to bring Maxwell's cutting-edge technology into their portfolio, revolutionizing the landscape of low voltage energy storage solutions.