Amabhethri e-OPZs, aziwa nangokuthi amabhethri e-colloidal lead-acid, awuhlobo olukhethekile lwebhethri le-lead-acid.I-electrolyte yayo i-colloidal, eyenziwe ngengxube ye-sulfuric acid nejeli ye-silica, eyenza ingasheshi ukuvuza futhi inikeza ukuphepha nokuzinza okuphezulu.Isifinyezo esithi "OPzS" simelela "Ortsfest" (stationary), "PanZerplatte" (tank plate ), kanye nethi “Geschlossen” (yavalwa).Amabhethri e-OPZs avamise ukusetshenziswa ezimeni zohlelo ezidinga ukuthembeka okuphezulu nempilo ende, njengamasistimu okugcina amandla elanga, amasistimu okukhiqiza amandla omoya, amasistimu okuphakelwa kwamandla angaphazamiseki e-UPS, nokunye.