Alas, xe is deceased, but I knew a chemist to whom your "non-standard kettle lead" description would be fighting words.
Xe would *always* correct anyone who referred to anything other than C15(C16) as a "kettle lead"; and xe worked with computer programmers who mostly didn't know the difference and made that mistake *all the time* when plugging C13(C14) kit in.
Xe caught wise that I did it deliberately within his hearing. (-:
The fun part, discovered today, is that the relative *also* has an honest-to-goodness proper EN 60320 kettle lead, with the high temperature notch (not the connector that computer programmers think a kettle lead to be (-: ), buried deeper in the garage.
I cannot be sure that the relative has none that fit that, given recent discoveries, but the relative's kettle that xe uses every day has a captive lead, as modern kettles now have.
The thing is, it's not obscure. This was quite a common connector in the 1960s. Do a Google Books search and you'll find lots of 1960s manufacturers touting it for their stuff in trade mags. The relative actually had an old 1960s kettle, but decades ago.
What this is, rather, is another good example of why not to trust #Wikipedia. Wikipedia has no mention of BS 3283 at all, let alone of BS 4491:1969 which sounded the death knell for this type of connector in 1969.
The relative has kept a non-kitemarked BS3283 kettle lead just in case xe might need it.
The relative has no working old electric kettles, and #BS3283 was withdrawn as an electrical standard three decades ago.
@krutonium
So basically #IEC60320 - C5 connector I guess...
That's good since it's common with Laptop PSUs and works fine, plus it can be adapted to basically any power standard.
https://en.m.wikipedia.org/wiki/IEC_60320
I hope it's also 85 - 275V @ 15 - 75Hz AC global voltage, but I'm convinced it is given that @frameworkcomputer as a small company doesn't want to have more than 1 SKU.
Main importance for me was the devices' charging cable to be disconnectable too, but that seems the case...
@siege that shitty connector is bad and it should be abolished!
Instead #IEC60906-1 and even #Schuko is better.
IMHO all devices should use #IEC60320 and #IEC60309 plugs...
https://en.wikipedia.org/wiki/IEC_60906-1
https://en.wikipedia.org/wiki/IEC_60320
https://en.wikipedia.org/wiki/IEC_60309
@lamp they are in certain juristictions.
I.e. #Switzerland makes them mandatory and bans non-compliant plugs.
https://en.wikipedia.org/wiki/SN_441011
Also the #IEC made several good standards that do the same.
#IEC60320 for devices ( https://en.wikipedia.org/wiki/IEC_60320 ), #IEC60906-1 for sockets ( https://en.wikipedia.org/wiki/IEC_60906-1 ) and #IEC6309 for anything that needs more than 250V 10A 1L+N+PE ( https://en.wikipedia.org/wiki/IEC_60309 ).
The #EU mandated IEC 62196 "Type 2" connectors for BEV charging. ( https://en.wikipedia.org/wiki/Type_2_connector )
JdeBP
Kevin Karhan 
Kevin Karhan 
