OPZS batteries or solar accumulators OPZS, are stationary batteries of acid-lead with shielding plate and composed of groups of 2 V vessels, the combination of the different vessels will form the final block of the battery.

This type of batteries is characterized by having a long life, deep cycle and is used in medium-large solar installations where capacity and demand is important.

Normally stationary batteries are sold in groups of 6 vessels (12 V), 12 vessels (24 V) and 24 glasses (48 V). The range of capacity of these batteries in very wide and varies from 180ah to 2500ah.