The cycle life of ultracapacitors is in excess of 500,000 cycles and can be sized to last the life of the product.  Batteries typically require replacement in 2-3 years.  This makes ultracapacitors an ideal choice as a source of back-up power when primary power interruptions occur.  The ultracapacitors, also known as Electric Double Layer Capacitors (EDLC) provide energy source to allow various medical equipment to safely shutdown.  Tecate Group offers an array of ultracapacitor cells, and both standard and custom modules, to suit a variety of back-up power needs.