This paper presents a Lithium Iron Phosphate Battery for Cloud Data Storage System and Telecom Uninterruptible Power System with the following characteristics: free of lead and sulfuric acid pollution, free of unsafe Lithium-Cobalt, very long calendar life, projected cycle life of more than 10 years, tolerant of high operating temperature, impressive high-rate charge and discharge performance, 66 % lighter than lead-acid given identical capacity, compatible with existing lead-acid charger provided with the same charging voltage. These features meet the energy requirement of the cloud data storage system and telecom uninterruptible power system.