Hello everyone,
First post from a newly-registered lurker, just chiming in to let anybody know who is interested that the "Dual Fuel" battery pack that shipped with the 2011 Saint
sort of works with the new Minimus.
I say
"sort of" because it won't work without a slight modification, albeit an easily performed and easily reversible one.
The problem is that the battery tube on the new Minimus is a few millimeters longer than the 2011 Saint and Minimus. Thus, when installing the little "mock battery" from the Dual Fuel unit, the spring piston which acts as the positive terminal of the "mock battery" does not reach the positive contact inside the battery tube of the new Minimus.
To fix this, an adapter is needed. I made mine from a thick plastic drinking straw, some aluminum foil. The only tool you need is a ruler and some sharp scissors.
The idea is to roll an aluminum foil puck to act as a conductive link. The puck must be no larger in diameter than the diameter of both positive contacts, and no thicker than about 3mm. A 5mm section of the straw fits snugly over the end of the piston, acting as both a retainer and insulator for the aluminum foil puck. When rolled correctly, the foil tends to want to expand evenly outward when compressed, making it stay put in the straw.
If all the dimensions right, the adapter stays centered on the positive contact inside the battery tube when the "mock battery" end is installed, and tightened all the way (to maintain water resistance).
If anybody is interested in more details, I can post more images. For now, here's my "Super Saint":