In message <474ee86d.27b38c0a.4cdd.1...@mx.google.com>, dated Fri, 30 Nov 2007, Scott Xe <scott...@gmail.com> writes:
>In last one to two years, Apply, Sony, Toshiba, Dell, etc. recalled >their batteries. All have no built-in fuse?? They probably do, but the fuse protects against short-circuiting the battery externally. The fires, not explosions as I understand it, of these batteries were caused by faulty separators (insulation) inside the battery itself, and no conventional fuse can protect against that. >What is the real cause of the problem? Possibly poor control of component part quality. It's happening in other fields as well, with less dire, but still very significant effects. In principle, Purchasing must buy only EXACTLY what Engineering specifies, AND Engineering must specify EXACTLY what is needed, in exhaustive detail. >Probably, it is now a top secret!! Please don't start a conspiracy or 'cover-up' theory. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk For very important information, please turn over. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
