My Modulus has an active preamp, but on mine there is no compartment to hold the battery or even anything to hold the battery in place. It bugs me that there's a battery flopping around in there with the wires but I'm not quite sure what to do about it, other than to just sacrifice onboard tone control and go passive all the time. Has anyone dealt with this before? What did you do? Ideally I'd send away to Dingwall for a set of their battery compartment parts and break out the dremel, but I doubt that's an option.