HOPPECKE OGi bloc batteries are based on flat plate design. The special feature of the HOPPECKE OGi bloc product is the around protection of the negative plates by pocket separators. Obtained by the around protection no short circuits are possible any longer by shedded active mass. Therefore OGi bloc batteries are developed for high current applications, but they are even very good in cycling operations. They offer an excellent live expectancy and a maximum safety on operation.