You mean I wasn’t supposed to replace the thermal cutout in my coffee maker (with identical part)?
From: Richard Nute [mailto:ri...@ieee.org] Sent: Friday, February 22, 2019 3:22 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Rating & WEEE markings on lithium-ion rechargeable battery Hi Scott: It matters not WHO determines battery lifetime is product lifetime. If the battery is permanently installed (glue is permanent) in the product, then battery lifetime is product lifetime. The fact that some users or technicians can undo the glue or other permanency construction and replace the battery is not a factor in determining product lifetime. (Such folks probably have a good idea of a replacement battery before disassembly is started.) Despite such antics, the battery is not replaceable, so it need not be marked with replacement data. (Just like the thermal cutout in my waffle iron!) Risk assessment process is highly subjective; for this reason, I remain highly skeptical of the results. Do a risk assessment of an ordinary power cord! Best regards, Rich From: Scott Xe <scott...@gmail.com> Sent: Friday, February 22, 2019 8:18 AM To: ri...@ieee.org Cc: EMC-PSTC@listserv.ieee.org Subject: Re: [PSES] Rating & WEEE markings on lithium-ion rechargeable battery Hi Richard, Thanks for your comments! Your second point is good to think it deeper. Who does determine the battery lifetime equal to product lifetime? Product designer? Not all customers agree on it. For example, the lithium-ion battery in mobile phone. Nowadays, many mobile phones do not suggest to replace the battery by using the glue for mounting the front and back panels. Some people do replace the battery by themselves or by the battery sellers. If there is no marking, is it safe to replace the right battery? Do we need to take it into the risk assessment? Thanks and regards, Scott On Thu, 21 Feb 2019 at 02:53, Richard Nute <ri...@ieee.org<mailto:ri...@ieee.org>> wrote: Hi Scott: I agree with John. All batteries wear out. A battery is replaceable either by the user or by a serviceman. For this reason, the battery (or the product or both) must be marked so that the battery can be replaced by an identical or equivalent battery. Same as the reasoning for fuse marking. However, for some products, the battery lifetime is the product lifetime. In such a product, battery identification markings need not apply, but disposal markings would apply. Best regards Rich - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org<mailto:emc-p...@ieee.org>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)<http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org<mailto:sdoug...@ieee.org>> Mike Cantwell <mcantw...@ieee.org<mailto:mcantw...@ieee.org>> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>> David Heald <dhe...@gmail.com<mailto:dhe...@gmail.com>> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
