As a big battery manufacturers in China,Website:http://www.yangtze-power.com,we supply many different kinds of batteries,such as the lead acid AGM battery,Gel battery,AGM deep cycle battery,Gel deep cycle battery,OPzV battery,OPzS battery ..etc .The following is our OPzV Battery 2v200ah features : 1.Completely sealing throughout the batteries life.2.Service life up to 18-20 years in continuous ...