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Hello, Alex, Lithium batteries contain a hazardous material -- lithium. It does not like water, and will catch fire just about by itself. Packaging becomes an issue. You may discover your existing product's enclosure is unable to safely or legally accept a Lithium battery. (But it might take another, differently assembled one.) There are also restrictions on shipping lithium. The US Federal Aviation Administration requires lithium cells in automatic defibrillators carried on aircraft to be TSO'd. I am surprised they haven't gone after lithium photo batteries. High power lithium batteries are capable of MANY times the discharge rate we are used to. Short circuit and thermal protection is therefore even more an issue than it is for NiMH batteries. Charging is fussy, and the results of a mistake are... warm. Google around a bit; you'll find some "interesting" stuff. However they have a very long self discharge curve, so they are extremely useful in devices that must work when needed, and they hold a lot of energy for their weight. Bear in mind, so does Picrate! One Amateur operator gets up to 750 watts _output_ from a backpack rig he runs off a Lithium battery. Check out the HFPack group on Yahoo groups for that discussion. (The battery cost -- it says there -- $900.) EMC of smart-battery electronics or battery support circuitry may be an issue. ESD and RF immunity most likely will be issues, insofar as they may cause a charging malfunction. This is one chemistry you do NOT want to have one with. Cheers, Cortland This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. IEEE PSES Main Website: http://www.ieee-pses.org/ To post a message send your e-mail to emc-p...@ieee.org Instructions for use of the list server: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
