I read the last page to see what the answers were :) But I'm reminded of a question I've had for a long time. Wouldn't a cold battery tend to warm itself up when a fair sized load is applied? Cranking an engine on a cold morning made me ponder this. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist