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[Closed] Dynamo powered light with USB?

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Cheapest I can see is AXA for £48 from Amazon, IIRC B&M are £££, anything else?


 
Posted : 05/04/2015 9:53 pm
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B+M are just over £80 from Germany. I've got one and I just cannot fault it for quality, as a light or for USB charging. Mines hooked up to a rear light with a bake light too 🙂

EDIT
Just looked at the AXA. A couple of things spring to mind:
5v 0.5a USB seems a bit lightweight. Will it charge things or just keep them topped up? B+M has a cache battery such smooths the power too.
USB port on the light is neat but will it be as reliable and waterproof as the B+M version on the bars? I route mine into my bar bag and it's pretty much 100% waterproof.


 
Posted : 05/04/2015 9:59 pm
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I already have a B&M light, it is v good. I was thinking of a £25 charger on ebay but I want a light for my Brompton so might as well try the AXA I think - I just want to charge a phone for dicking around with in the evenings., maybe daytime gps.


 
Posted : 05/04/2015 10:28 pm
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If you have an iPhone you need a regulated power supply that provides a constant voltage or it just won't charge. I don't know if that it the same for other phones but it may well be. The internal cache battery and electronics provide that regulated supply.


 
Posted : 06/04/2015 7:14 am
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Considered the AXA but ended up getting a seperate charger, a B+M USB-Werk, £50 from one of the German MO places. 0.5ah 5V std USB output with a tiny cache cell to smooth out output.
The good thing is the cache cell meaning the Garmin charges continually but I think an Iphone would need a larger cell adding as the phone power draw (1ah/5V I think) will drain the USB-Werk faster than the cache charges. Will be same for the AXA I think, you'll need a cell that can output the same as the phone draws.


 
Posted : 06/04/2015 7:45 am
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I have the Axa light on my tourer, it will charge an iPhone and a Garmin Edge (actually charge rather than just keep them running).
The light itself is good; the bracket to fix it to the fork crown is very bulky though - I had to make an extra bracket to fit mine, might be awkward on a Brompton.


 
Posted : 06/04/2015 8:25 am
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Ta, it's be going on the tourer, the B&M going on the Brommie.

iPhone? Moi?


 
Posted : 06/04/2015 10:45 am