Ka'idar batir cart ita ce cewa suna cikin batura.Yana amfani da farantin gubar da ke cike da gubar mai siffa ta soso azaman electrode mara kyau, farantin gubar da ke cike da gubar dioxide a matsayin ingantacciyar lantarki, da 1.28% dilute sulfuric acid a matsayin electrolyte.Yayin caji, wutar lantarki takan koma makamashin sinadarai, yayin da ake fitarwa, makamashin sinadari ya koma makamashin lantarki.Lokacin da baturi ya fito, gubar karfe ita ce electrode mara kyau, wanda ke jurewa yanayin oxygenation kuma an sanya shi zuwa gubar sulfate;gubar Dioxide shine tabbataccen electrode wanda ke samun raguwar amsawa kuma an rage shi zuwa gubar sulfate.Lokacin da aka yi cajin baturi tare da halin yanzu kai tsaye, sandunan biyu suna haifar da gubar da gubar dioxide, bi da bi.Bayan cire tushen wutar lantarki, sai ya koma yanayin da ya riga ya fita kuma ya samar da batirin sinadari.Batirin acid gubar baturi ne waɗanda za'a iya yin caji akai-akai da fitarwa, ana kiran su batura na biyu.