In article , dave@davehigton.me.uk
says...
>
> You may well realise, after you do so, that lots of "USB cables" out
> there really don't conform with the USB specifications.  A lot of them
> are clearly too thin.

This isn't a purely theoretical problem. One of my devices (a Hudl2)
will only charge properly if I use a short 15cm cable, and then only
with some chargers. I *guess* it's really (perhaps non-conformantly)
fussy about getting a full 5V even when pulling its full charging
current.

This is a pain if I want to use it while it's charging, so I'm planning
to get a longer cable advertised as using thick power conductors, and
see if that helps.

John

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