Most of two stage converters for electric battery charging comprise of boost converter for PFC followed by DC to DC converter with universal input voltage. These two stage conversions suffer from poor efficiency and increased component count. A single stage switched inductor cuk converter based power factor correction converter is proposed which offers high step down gain, low current stress, high efficiency and reduced component counts. The operational analysis and design equations for various components of proposed converter are carried out in Continuous Current Mode  ( CCM ) .Mathematical modelling, analysis, stimulation and experimentation on proposed converter rated for 500W,48V/10.4A.The performance investigation of proposed converter with respective power quality indices like voltage THD, current THD and total power factor are carried out with various types of load such as resistive load and battery load in both Constant Voltage  ( CV ) and Constant Current  ( CC ) .Furthermore, the dynamic performance of proposed converter with battery charging is investigated in constant voltage mode and constant current mode with respect to wide change of supply variations.