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By davbeck
#78047
I bought a couple lithium ion batteries that were for camcorders. I got them for only a few cents and figured if I couldn't figure out how to use them it wouldn't be a huge loss.

Does anyone know how I would go about charging them? one has 3 contacts and the other has 4. Will the Sparkfun LiPol chargers work with these batteries and if so, which contacts do I connect?