John, All, I should have taken out the unwanted elements of the discussion earlier! This "metal particle" issue is a red herring in respect of this "smart" discussion... The discussion revolves around whether "smart batteries and smart chargers" should be used for safety purposes, while (potentially) making it less safe to use non-original replacements - especially from sources that have not (yet) obtained recognition for high quality spares.
Metal particles in the construction of Lion batteries has hit some of the biggest names in the world - no doubt smaller ones as well. However, it does not relate to the discussion. If the manufacturer recognises the possibility that a fault-free, but not a smart, battery may be connected - then surely it is essential that the phone maker provides a safe level of charge current (or none) rather than allow an unsafe level of charge to create a realisable hazard? But, I nearly got hood-winked into the trap... ======== The observer noted that as Noah entered the Arc he had a bit of pie in his beard.... Regards Tim 6239 desk A1S77 P Please consider the environment before printing this email. From: John Woodgate [mailto:[email protected]] Sent: Tuesday, April 10, 2007 10:51 AM To: Haynes, Tim (SELEX) (UK Capability Green) Cc: [email protected] Subject: Re: Product Safety - "Smart Batteries" *** WARNING *** This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. In message <201048ea81ba0745aca78e4cc8839001c8b...@desmdswms201.des.grplnk.net>, dated Tue, 10 Apr 2007, "Haynes, Tim (SELEX) (UK Capability Green)" <[email protected]> writes: >But - on topic - isn't the solution to the "smart battery" option, to >allow a "non-smart" battery to charge at a nominal "safe" level of >charge? We all acknowledge that the cheap alternatives will have a >market - isn't it then ethical and sensible to make the phone "safe" >with these alternative batteries - even though the thing takes 2 days >to charge.... Unfortunately, no. It's user-friendly as far as it goes, but it does not go far enough. By providing such a facility, phone manufacturers would be tacitly telling users that ALL cheap batteries were safe in ALL respects, e.g. that they didn't contain metal particles that could cause internal short-circuits with potentially dire results. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK SELEX Sensors and Airborne Systems Limited Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England & Wales. Company no. 02426132 ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - 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 [email protected] 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 [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] 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 ______________________________________________________________________
