From: "David VanHorn" > If you have a 12V alternator, you really need to use 12V battery. > The alternator isn't guaranteed to give you a stable output without the > battery present for one thing, and there's no easy way to get from 12V to > 24V at that current level. Well, they are 12V batteries, but I want to connect them in series. Can I use the output of one of the batteries (12V) to power up the alternator field? Cheers Padu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist