I tried an Eveready Advanced lithium battery in my Music Man Stingray with the pop-out battery holder. But the battery went in halfway and stuck. I had to disassemble the battery compartment to get the battery out. This particular battery was quite larger than regular 9V batteries, but I didn't catch that until it was jammed in the compartment.
Does anyone know of a lithium 9V battery that isn't oversize, so to save me some money buying them to check?...