azza_333

I'm looking into Dynamo & solar chargers again. I was initially think that if I installed a SON28 with a Busch&muller Lumotec IQ2 Luxos U, so I can charge USB stuff off it. I worked out that I will probably need 3500-4000mah a day. I am concerned that I wont be able to get enough power from the dynamo alone, since I will only be riding an average of 7 hours a day and 15/kmh (9.4mph)

So I was possibly thinking of supplementing the Dynamo power with a Voltaic Fuse 4W solar charger. I have read a few reviews on this online, but non give a real world amp output of the USB port, has anyone tester their own and know the answer?

Also I am assuming the Dynamo will only supply enough power for 300-400mah per hour, is this estimate accurate?

BigAura

There's much beefier panels I'm interested in the Anker 21W ($56/14.9oz).

Tourist in MSN

I think my AXA Luxx 70 Plus is one of the lowest output USB chargers available and I have measured over 500 milliamps out of it when above 20 km/hour. The USB port is under the gray cover on the mounting bracket. I am not sure at what minimum speed I need to be at to get 500 milliamps, but I suspect with your carbon wonderbike that slow speeds is not your concern.



I would expect that most other dedicated USB chargers like the Sinewave or B&M would perform better than mine. And there is more info at these recent links:
https://www.bikeforums.net/touring/10...0-mah-day.html
https://www.bikeforums.net/touring/10...pressions.html

I have seen comments on a cheaper brand USB charger that at higher speeds it will cut out and stop producing power, but I do not recall which brand. If you look at the lower cost brands, look at review comments on the internet to make sure you are not buying one that will not function at higher speeds. At higher speeds, the hub can put out a lot of power and at least one of the cheaper ones cuts out to avoid getting overloaded.

I soldered up a couple of my own do-it-yourself USB chargers but blew out the circuits on the downhills so I gave up trying to make my own.

arnaguedes

I have an anker 8w solar panel and with full sun I have 1Amp

fietsbob

so what did the manufacturer of the hub respond , with the answer ?

azza_333

Nope