OPzV/OPZS series is a submerged lead-acid battery with tubular plate technology. Due to its special tubular structure, it is easy to move and operate, and is suitable for use in environments where space is tight. In tight space. With a design life of over 20 years on float charge at 25°C, it is the battery series with the longest battery life. The high stability and high performance make it more suitable for cycling in extreme environments (solar/wind, traction, etc.).