Lithium battery is latest technology product in battery storage market, It has many advantages including 1) faster charging - battery gets charged 100% in just 2-4 hours 2) It is maintenance free 3) longer life - Compared to Lead acid and SMF, Lithium battery has 2,000 cyclic life which translates in 10 years useable life. 4) light weight - the weight of a lithium battery is 1/4th of Other comparable batteries such as SMF, lead acid batteries.