Maxwell's HC series of ultracapacitor cells is ideal for consumer electronics, automotive control systems, wireless transmission, medical devices, automatic meter readers, and many other applications requiring a pulse of energy that cannot be efficiently provided by a battery or power supply alone. They are cost-effectively packaged in industry standard, radial cylinders with either wire or snap-in leads.

The HC works in tandem with batteries for applications that require both a constant low power discharge for continual function and a pulse power for peak loads. In these applications, the device relieves batteries of peak power functions resulting in an extension of battery life and a reduction of overall battery size and cost.

The HC series is also an ideal source of back-up. It can provide extended power availability, allowing critical information and functions to remain available during dips, sags, and outages in a power supply or battery change. Like all Maxwell's ultracapacitor products, the HC series is capable of accepting charges at the identical rate of discharge.