Mercury Uninterruptible Power Supply, Line Interactive UPS specification and description table for electronic sound system , lcd screen , home use ups last longer then expected. This mercury 200AH battery is a deep cycled sealed maintenance-free battery designed for inverters, telecommunication and other applications involving battery back-up need that involve continuous charging and discharging. This Mercury battery is 200AH 12V . It is also a lead acid battery , what this means is that it will use a reversible chemical reaction to store its energy . It uses lead plates in a solution of sulphuric acid which generates electric energy . This electric energy is then used to power the inverter which offers you stable light to enjoy all through the day.