Originally Posted by DannoXYZ
I've got a 10w MR-11 light right now. Don't have a regular commute or anything, so I've been using for afternoon rides where I get caught up after sunset. Probably about 1-1.5 hours a day. I have put a
female DC socket at the end of a 12" lead on the battery and a
matching plug on the light. I put the same plug on my 12v smart/trickle motorcycle-battery charger. So I just unplug the light from the battery and plug in the motorcycle-charter. This way I can also use the AC/DC brick 12v transformers that's common as well. Recharge about once a week overnight, about 8-hours on the smart-charger.
I like your setup here and think I'm going to try to build something comparible for my power source. I think I'm going to go with a 5ah setup, so I'll probably buy these:
http://www.batteryspace.com/index.as...OD&ProdID=1158
They're cheap and I think they'll provide plenty of power for my commute if I charge every day at work. A question I have is why you built your power brick to supply 13.2V instead of a flat 12V. Is there something I'm missing here? Should I buy 11 of these batteries so that I can get 13.2V or can I get by with 10? Also, what smart charger do you recommend for this type of setup (assuming I go with the C batteries instead of your D's).
Thanks everyone for all of the great information. I'm learning a ton (and having a great time).
