Effect of internal resistance mismatch on performance of battery pack LiFePO<inf>4</inf>

This paper describes a mismatch of internal resistance battery LiFePO ₄ when assembling into battery pack. Internal resistance battery is a number that states the value of resistance that exist within the battery component, it will affect the State of Health, State of Charge, life time, until the heat generated by the battery. The tools used in this experiment include the internal resistance tester EQ-MSK-BK300, battery analyzer BST8-3, and the results are observed in real time on software TC5.3. The experimental results showed that there are differences produced by some of the battery pack that has a different internal resistance.