Superior product in performance and service life: The EnerSys PowerSafe DDm range offers an ideal solution for the requirements of large capacity valve regulated lead acid batteries. The PowerSafe DDm steel can design concept, with its integral shelving system, provides a cost-effective battery system with a compact, quick and simple installation process. With thicker positive plates for long life, high integrity single sealed post design, large copper post design for superior high speed performance, and steel clad cells that provide uniform compression.