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Electric vehicles (EVs) have been shown to be more efficient than petrol cars.However, one of the main drawbacks of EVs is the long period, typically 7 hours for recharging the battery pack.Although fast charging in about 30 minutes is possible, the capacity retention is drastically reduced to about 40% of the batterys capacity.Recently some high-performance battery cathode materials which are capable of fast-charging within a few minutes, have been developed and patented by the National University of Singapore (NUS).The Energy Market Authority of Singapore has recently awarded a grant to NUS to develop this fast-charging cell.This paper describes the project on the development of an intelligent, high-performance, fast-charging Li-ion battery pack for EVs utilizing the patented battery materials.There are 5 main tasks fabrication of battery cells, development of intelligent power management system, development of intelligent thermal management system, road-testing of battery pack in small EV, and road-testing of battery pack in large EV.With the anticipated high charging/discharging rates, many issues will arise.One of the main issues to be highlighted in this presentation is thermal management.The performance and durability of Li-ion batteries are greatly affected by temperature.Hence, a battery thermal management system (BTMS) is required to achieve good performance and prevent failure due to overheating or thermal runaway.Presently, depending on the power output of the battery pack, various thermal management techniques have been used.For relatively low power systems, active forced air cooling has been used.However, as the power level increases, the limits of air cooling will be reached and liquid cooling have to be used.