Due to their much faster charge/discharge times and number of cycles permitted, supercaps are used in applications that require frequent short bursts of energy. Supercapacitors can be placed in parallel with batteries to reduce stress on the battery by providing quick bursts of energy to the load. This greatly extends battery life and can lower the overall size and cost of the battery. In some applications, supercapacitors may even replace batteries. CDE coin cell supercaps are good replacements for batteries to provide sustained memory backup during power outages. Unlike batteries, their performance will not degrade over time.