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Battery-Post Adapter
Small alligator clips (needed for field charging) won’t fit on posts of an auto battery, so drill a small 3/8-inch-deep hole in the top of the lead posts, then drive in a brasss screw onto which the clips will fit. To avoid corrosion, keep the screw and posts coated with petroleum jelly (don’t use car grease); it won’t affect conductivity. Adapted from 400 Great R/C Modeling Tips by Jim Newman, Volume II, an Air Age...
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