It is not a case of LiFePO4 being affordable, it is a case of can one afford to use lead acid?
The life cycle cost of LiFePO4 cells is a quarter of lead acid batteries. The upfront costs for a pack vary from similar to double depending on the application, but one must consider that in 3 to 6 years’ time the lead acid batteries must be replaced and the LiFePO4 cells will last 13 to 20 years depending on the application and pack design.
LiFePO4 cells have revolutionised the potential and life cycle cost of operating battery based power systems. These cells have a cycle life 10 times that of typical deep cycle lead acid batteries. They only cost approximately 50% more to purchase upfront, however the saving on life cycle cost is substantial.
LiFePO4 cells are available in a wide range of sizes to accommodate loads of a few amps to over 1000 amps. They can deliver sustained high power without excessive heat generation. There are no gases released and LiFePO4 cells are also thermally stable. They can be charged repeatedly to full capacity in less than 60 minutes with no appreciable loss in performance.