Hi Charilie, I believe 6,4W is maximum power on output of the battery (electronically protected) and therefore your supplied product does not need a fire enclosure. However internally inside the battery you have high energy and lithium battery is considered as a source of fire, therefore fire enclosure for the battery is required. Many manufacturers consider outer tape around battery, that's meet min. V-1, as fire enclosure.
I hope this helps. Best regards, Boštjan From: Charlie Blackham [mailto:[email protected]] Sent: Sunday, September 29, 2019 10:01 PM To: [email protected] Subject: [PSES] IEC 62368-1 enclosure requirements for small Lithium battery All I'm testing a very small device that is powered by an external 3.7V, 210 mAh Lithium Polymer battery - the device is smaller than the battery so the battery is external to the product and I'm still getting my head around this standard. The device is sold B2B for very specialist applications and all users would be Instructed Persons The battery output is limited to < 6.4W under all load conditions inc. short, so meets ES1/PS1 - does the battery need its own enclosure to meet Annex M4.4, or would IEC62133 compliance be sufficient? thanks Charlie Charlie Blackham Sulis Consultants Ltd Mead House Longwater Road Eversley RG27 0NW UK Tel: +44 (0)7946 624317 Email: [email protected]<mailto:[email protected]> Web: https://sulisconsultants.com/ Registered in England and Wales, number 05466247 - ---------------------------------------------------------------- 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 <[email protected]<mailto:[email protected]>> 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 <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> - ---------------------------------------------------------------- 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 <[email protected]> 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
