PowerMAX are sealed, maintenance-free, lead-acid batteries made in AGM technology (glass fibers soaked in electrolyte). Their purpose is to work in emergency power supply systems (buffer operation) or as autonomous power sources (cyclic operation). They are manufactured in accordance with international standards of quality, safety and environmental protection. According to the EUROBAT classification, the design lifetime is from 3 to 10 years for the PM series. Batteries are covered by the manufacturer's warranty from one to two years, depending on the type and working conditions.