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Old 02-04-2011, 07:58 AM
Swampworks Swampworks is offline
Junior Rocketeer
Join Date: Mar 2005
Posts: 13

I actually used to used a drill battry for my launch system. My biggest problem was designing a connector that fit to the contact locations. The batteries I had all had recessed contacts and you can't just use a large alligator clip because the contacts were opposing each other. I ended up using a block of wood drilled out to accept the shape of the insert on the battery and mounted some brass coiled strips that would "uncoil" to reach the contacts. It worked fine but I eventually switched over to a "jump start" pack.
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