I too would be hesitant to put together a (custom) battery setup setup for a model train using rechargable lithium batteries at this juncture. If the nimh ones will suffice that's what I would go with. Cost effective and good enough would suit me just fine. I can't wait to see how GRJ's project on this turns out. The idea of recharging the batteries on the fly is really innovative and a great advancement, imo.
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