Amstron valve regulated sealed lead acid batteries are maintenance free, easy to handle, rugged and economical. It has a characteristic of high discharge rate, wide operating temperature, long service life and deep discharge recover. • Absorbent Glass Mat (AGM) technology for superior performance. • Valve regulated, spill proof construction allows safe operation in any position. • Power/volume ratio yielding unrivaled energy density. • Approved for transport by air. D.O.T., I.A.T.A., I.C.A.O., F.A.A.