: This is a most interesting technique, but I guess I'm missing something as the 1.5V cells I've been seeing are all in the$2+ range, which would make a fairly expensive battery. I'm sure you must have found a cheaper source than I've been seeing. Your comment about the hearing aid batteries is very helpful as you've just helped me avoid making a big mistake!
: If you find the part number for the 1.5V cells you use it would be great if you could post it here. Thanks for your time, trouble and helpful comments.
: Mark.
: : : Inside you will find a short plastic tube, and inside that, 10 x 1.5v button cells (10 x 1.5v cells in parallel naturally = 15v).
: : ====
: : Whoops! - 10 x 1.5v cells in SERIES = 15v :)
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