WBD POWER OPZV 2V350AH Deep Cycle GEL Battery Energy Storage for Off-Grid & Grid-Tied Solar Systems Product Overview WBOP OPzV2-350 is a heavy-duty tubular gel deep cycle battery for off-grid & grid-tied solar storage. The non-spillable valve-regulated design supports frequent deep discharge, delivering stable power for long-term photovoltaic energy projects. Key Specs Model: OPzV2-350 Voltage: 2V | Capacity: 350Ah/10hr Cell type: Tubular gel VRLA Cycle charge: 2.35–2.40V;