I have a early 90's guitar with dual humbuckers that I bought new and just love the way it plays. Used it for gigging and all that through the years. I changed out the stock bridge pickup for a Dimarzio Tone Zone back in the gigging days to bring more low end punch to the game which it does quite nicely (at expense of the high end), but have recently been pondering putting in an active EMG in the bridge and moving the Dimarzio to the neck position where it's actually designed for. My concern is making the battery easily accessible. I hate leaving the access panels off the back. Is there anything out there to make it easy to swap batteries when needed?