12volt

So I've been working on a set of lights for my bike. I got tired of the walmat crap I was using, it didnt cut it! Here's what i did, The supplies: 2-6v 4.5amph SLA batteries(from Academy Sports) wired in series(10$ each) 1-12v 20watt halogen lamp (RadioShack) part #272-0006 (7$) 1-...