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 or 3.30V. The charge rate of lithium iron phosphate is 1C and the discharge rate of 1-25C. Manufacturers and laboratories report that tens of thousands of cycles can be expected from a high quality LiFePo4 battery. However, these are theoretical values that could not be easily verified.