I’m looking for an extension cable for the generic type Chinese battery pack
I can’t find the spec for these cable ends anywhere so not sure what/where to order
Can anyone guide me?

Magicshine?

They are usually a standard 5.5 X 2.1 power plug and socket, but some are 5.5 X 2.5

Do you want the threaded connection as that will be much harder to source? If you can live without that then 2.1 extension leads are readily available. Often sold as CCTV power leads. You need to be a bit wary as the cheap ones often have very tiny copper cores.

Magicshine won’t ship to me unfortunately, but yes that’s the one I’m looking for

Don;t need the threaded one – so thanks, I’ll get a standard 5.5 x 2.1 and see how that goes

Got this one, seems to work fine