OK got it… basic Micro USB cable, similar form/size to a streamlight microstream.
The Jetbeam E01R is spot on physically. But can’t do anywhere near 250L OTF with an eneloop. I don’t believe there is a 1AAA that will do 250L from a NiMH.
Maybe there is a 10440 light that can do something north of 200L… I am not sure though.
[EDIT] 007 beat me to it. :^)