Joined: Nov 2006
Posts: 19,810
Likes: 597
From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
USB battery pack, simultaneous charging and using?
The question is: is it okay to use a battery to power a headlight (or the like) while charging the same battery?
The whole story is: I'm trying something a little different on a bike I want to use for long rides, possible camping trips, etc. I have plugged the wire from the dynamo into a device that converts the AC current to 5v DC in the form of a standard USB socket. I can use that to charge a battery, cell phone, GPS, etc; or I can use it directly to power a headlight.
But if I do both at the same time, am I going to damage the battery or something?
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