Clipped into this simply ingenious converter can be used for B-cells per one AA battery or a flat battery in such wells.
Ie you can the low mignon cells or existing Mignon batteries easy to use in place of expensive baby cells (holding course is not quite as long, of course).
The solution of Sanjo is as expensive and much less convenient because the battery does not allow pinning properly in the Sanjo-shell. Here sits the safe and is fully usable!
