Lithium iron phosphate is a very attractive positive active material because of features such as large discharge capacity of 160 mAh/g and has demonstrated long life even at high temperatures. The current LiFePO4 chemistries, however, have shown to have poor high rate discharge capability. Therefore, in order to improve this chemistry, prototype lithium-ion cells with an improved LiFePO4/Gr electrode system have been developed. LiFePO4 cells have a higher discharge current, do not explode under extreme conditions and weigh less but have lower voltage and energy density than normal Li-ion cells. Lithium iron phosphate battery is a new generation of lithium-ion battery, from the invention of less than 15 years now. It is a type of rechargeable battery based on the original lithium ion chemistry, created by the use of Iron (Fe) as a cathode material. Lithium Iron Phosphate is generally considered to be the most promising new battery chemistry for use in electric vehicles.