Dr Skip wrote: > Just curious... It sounds like you're using the standard retail-type > AA cells. Will you be soldering tabs to these? Never solder to batteries unless they are specifically rated for it. Noral soldering heat can do serious damage. Electric spot welding works because it heats a very small volume of metal so quickly that no substantial heat gets to the sensitive part of the battery. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist