Assessment of LiFePO4 Battery Performance in Stand Alone Photovoltaic Street Light System

This paper is aimed to evaluate the performance of Lithium Iron Phosphate (LiFePO4) batteries as a storage for stand-alone photovoltaic system during charging and discharging. Monitoring has been conducted based on LabVIEW Interface for Arduino (LIFA). The results show that on the discharge condition during 12 hours, the average current was -1.2A - 1.0 A. In charge condition during 8 hours, the current range was 0.10 A - 1.95 A, and the optimal charging process was from 11 am- 2 pm. However, the findings indicated that the battery undergo energy deficit approximately 10% every cycle of operation.