CYPRES 1 works with a battery that is calculated to last for approx. two years or approx. 500 jumps. The battery is a high-energy density type, with long life, low self-discharge and has a long shelf life (approximately 3 years), as long as it is stored in a cool, dry location (below 68°F). It consists of two round cells, and does not contain heavy metals.
Each battery which has been installed in CYPRES 1 has to be replaced after 2 years at the latest. The 2-year maximum period does not start until the battery is installed for the first time.