OK

So I worked this backwards. I first bought the Velleman strobe and began running it off a 9v alkaline. That got old fast. I also realized that my 6v 10w helmet mounted halogen was not enough.

I purchased this battery:
NiMH Universal External Battery, 12V 4500mAh + Universal Smart fast Charger

The Optronics driving lights and assorted connectors and wiring as described here: http://nordicgroup.us/s78/

I would like to run both a 10w on my helmet and a 20w on the bike and the strobe during the darkest part of my commute, about 1 hour now. I know that some of this has been discussed here but I would like it applied directly to my set up.

Please let me know what kind of run time I can expect to get. Thanks for the great info!!!

Kevin