The EnerSys DataSafe DX 2DX-21B is the first in the DataSafe DX series. These batteries are known for their reliability, longevity, and affordability. The DataSafe DX 2DX-21B battery features two cells and a calcium flat plate construction perfect for high-rate UPS applications. The battery’s two cells allow for easy installation. The DataSafe DX 2DX-21B has an optimal grid and dual lug design. A heavy duty plate lug, heavy duty strap, and patented Slide-Lock post seal are other notable features. The DX batteries are protected from fire by an included flame-retardant cover. An additional flame-retardant container can also be purchased.