[QUOTE 5460953, member: 9609"]I have checked with Cateye and they have said a big NO to powering the light from a powerbank, in fact the light is designed to switch off as soon as it is plugged into a power supply - I have since tried this and yes the light just won't work whilst plugged in. Pity, it would have been handy to use it that way in emergencies, but I had wondered if doing that could cause problems.[/QUOTE]
Another way that Cateye lights suck. The recent Crivit ones are happy to run direct from USB power and it's got us home when one got switched on by careless packing in a bag.