I was told at my local hobby shop that I needed a battery checker since I had several different types of LiPo batteries as well as some older NiCads laying around. I didn't want to break the bank buying one. Saw this on Amazon and ordered it. I'm new to the hobby scene that is using LiPo batteries, so when I received this unit thought that I should come with a cable to plug into that set of male pins on the end. Went to local hobby shop and the told me that the..