When considering 9V , AA and AAA batteries .... does one get the best bang for the buck with ....... primary alkaline primary NiMh secondary NiMh I have seen AA LION batteries advertised. How is this possible? I thought LION was 3.6V. If one wants to keep all the battery powered toys going , what is the best choice now ? Are cheap batteries from China going to be a safety issue ? Gus -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist