I bought one of these a few years ago ..
https://www.bumm.de/en/products/akku.../192qmla.html?
Not putting enough money on the counter, really for all the features you desire.... cheap flashlight mentioned above, is realistic , then.
I use a hub dynamo based wired LED head and tail lights, in the winter , I only use a battery light in the summer *,
when it is not dark till much later at night.. *Or I just don't go far, and get to put the lights in my pocket, to keep the battery warm.
Added Complication a brand bought in the USA may have a different name in UK,
because the Importer is different, though the Company both get to make and brand them is the same.
Case in point I got a Planet Bike Tail light, but looking at sellers Like SJS Cycles, etc. in UK same stuff has a different brand name.
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