Lithium iron phosphate (LiFePO4) is a newer type of battery gaining recognition due to its cost-effective materials and stability with high temperatures. Lithium iron phosphate has a cathode of iron phosphate and an anode of graphite. It has a specific energy of 90/120 watt-hours per kilogram and a nominal voltage of 3.20V. The charge rate of lithium iron phosphate is 1C and the discharge rate of 1-25C.