Lead–acid cells or batteries are often grouped to form battery packs that deliver a higher voltage and capacity for various applications. This presentation investigates two of those applications, the e-Rickshaw and telecom, and the effect of battery cell imbalance in the typical 48-volt battery pack. During their manufacture, variations in cells and batteries can impact performance parameters such as capacity, state-of-charge, and internal resistance in the system’s operation. The cell/battery with the lowest capacity or state-of-charge determines the battery pack’s useful life, negatively impacting the overall system performance. Our results and analysis highlight the most influencing factors and parameters that lead to poor pack performance.
Sundar Mayavan received his PhD from the University of South Australia. Sundar is presently leading the lead–acid battery group in the CSIR-Battery Performance Testing and Evaluation department at the Centre CSIR-Central Electrochemical Research Institute (CECRI), a premier R&D institute in the field of electrochemistry. The department is under the Government of India’s Ministry of Science & Technology, located in Mumbai. Sundar’s current research interests include nanocarbon for lead–acid batteries, battery management systems (BMS), and battery ‘teardown’analysis.