hyperion charger and power supply

Just wanted to know,i have a hyperion charger the eos606i.can i use a power
supply with this charger to charge my lipo batterys with.i am using true rc
4s 14.8 4000mah.it can only charge a about 3 amps,and it takes about and
hour and a half to charge.takes to long for me.i know it is ac/DC but will
this work? any help dont want to destroy my batterys.