I'm new at this and really don't know exactly how this works. Anyway, I have an Explorer SE just as sent from the factory, regular battery pack and rechargable battery pack with charger and factory coil. I bought this because it is supposed to be the deepest detector on the market, but I'm a White's man. I can't seen to get away from a Whites. Also have two extra hand grips because the original was not very good, I think it was put on up-side-down. I have never tried to change it since I don't use it. If you need a referance call or email Dan Patterson and he can tell you about me, we hunt together most of the time. His # is 601-856-0094. He has a web page-- The Civil War Connection and also sells metal detectors. The price is $925 shipped if anyone is interested. My name is Woody Cox and can be reached by phone at 601-497-6237.