If you plan on getting into lager heli's like I am then consider a charger that will do six cells at least. I am thinking about a Trex600 and that flys very well on six cells. Triton2 will only do five cells. Just my two cents worth. Determine what YOU need and then peruse web for info. Info is there just waiting for you to find it. Look at helifreak.com for more info and some great videos on building,ect.