OK! the battery and recharger are here. I got excited and hooked everything up to the switch and nothing! Turned out that there were some diodes in the recharger that allow the current to go one way. Out of my league!

My husband did a simple un-solder and removed the board. It's up and running now and even brighter than with the 16.8V battery.

I don't see the wattage or the amps, just 18V sylvania bulb. So I'll just leave the thing on and see how long it'll run

I took this charger. Snipped off the transformer box and used the wire to go directly to the switch. The cap slides on and off the battery and will sit inside a 1G ziplock in the saddle bag.

The battery is an 18V Firestorm FSB powerpack. 1lb 11oz
The recharger is a Firestorm FSC recharger. 2.2oz


Thrilling!Pictures to follow sometime over the weekend or early next week!