Do these coaches have a nine vote battery compartment and switch on the under side; if so, what batteries are you using? I was looking at rechargeable batteries for mine. The big box stores in my area of Tennessee don’t seem to carry them. The local radio shack had one battery and no charger. Reading product reviews, there where many complaints that the rechargeable 9v product didn’t fit the standard compartment of a typical guitar effect peddle. So I’m looking for a rechargeable 9v battery system that is proven to fit the Bachmann battery compartment.