Battery charging is an essential and crucial issue regarding the cycling life andperformance of batteries. The objective of this study was to design and promotethe fast battery charger based on fuzzy logic control technique. In this study, afuzzy-logic-control-based (FLC-based) LiFePO battery charger wasexperimented. The proposed charger takes the voltage and current of battery intoaccount, and adjusts the pulse width modulation (PWM) duty cycle accordingly.The result showed that the proposed battery charger has the potentiality to retainspeed up time charging upto 33% at 2C current rate, which is less than existingeconomical speed up time charging. Besides, at fuzzy logic condition the rate ofefficiency at 1C, 2C and 2.5C were 77, 82 and 81% respectively, while in case ofwithout fuzzy logic condition it were 77, 76, and 75 at at 1C, 2C and 2.5C. Infuture this charging system can be utilized in various fields including electricvehicles and many other portable devices.Keywords: Electric Vehicle (EV), Fuzzy Logic Controller, LiFePO , PWM