...shakedown ride to test out the new son28 dynohub...Is your dynohub the SON Deluxe? If so, it is very much "either or" for lighting or charging.
Is it a case of choosing light or charger?I'm sure someone will be able to give you a technical answer, but the non tech one is - Yes, one or the other.
The charge bank may be the issue...That's where I would start. If you have access to or can purchase an inexpensive inline USB meter, you can tell how much your charging system is producing in both volts and current, and can also determine how much your power bank is drawing/demanding. I paid something like USD$4 for mine from a vendor on eBay and it has worked well.
...our touring speed of 12 mph which once we are fully loaded never increases.<nods> Actually, that's not a bad pace when touring fully loaded. I remember reading any number of "touring books" in the late-1970s/early-1980s that indicated a 10mph average overall was considered "standard", so you're about 20% above that. ;)
PH thank you, I have already stumbled across this link, not being terribly technical it hasn’t helped me! Next time out I’ll turn the light off and see if this sends all the generated power to my chosen power bank, its slightly annoying and disappointing that the set up appears to be an ‘either or’ arrangement, rather than running a light and charging the power bank simultaneously.I'm not the most technical either, what I got from that was how unlikely it would be to power both light and charger at the same time at touring speeds. Though unless you're hoping to run a daytime light there probably isn't much need to. Maybe it's similar to running two lights, something I did before LED's, it was frustrating turning the 2nd on and off, below a certain speed (12mph?) there'd be more light from the single than the pair.
the set up appears to be an ‘either or’ arrangement, rather than running a light and charging the power bank simultaneously
The amount of power that can be generated on the majority of hubs is 3 Watts according to the published specs.Here's what SON say
How much voltage and wattage does a SON hub dynamo supply?But then sadly for FaustoCoppi later on the same FAQ page it says
Nominal values are 6 volts and 3 watts. They are achieved at moderate speeds depending on wheel size and generator type. The real values depend on the electrical load to a large extent indeed. Running with no electrical load results in remarkably higher voItage. At high speeds and with suitable electrical load you may use significantly more power.
Can you charge a device with lights switched on at the same time?https://nabendynamo.de/en/service/faqs/
Most charging devices do not charge if the headlight shines at the same time; some of them might work with a small fraction of their nominal power. It makes sense to switch the light off when powering a USB-charger. You may connect an Edelux II DC 6-75V and a navigation device to the 12 V output on a „Forumslader V5“. If the buffer battery of the Forumslader V5 is well-charged you can power the light and your device at the same time.
So far I don't have a bike GPS or smartphone. On my 2011 tour I charged my old phone before leaving and it lasted for a month with frugal use. I didn't even use the spare battery I packed.
So far I don't have a bike GPS or smartphone. On my 2011 tour I charged my old phone before leaving and it lasted for a month with frugal use. I didn't even use the spare battery I packed.
I might be able to borrow a USB meter, though maybe not till after lockdown. I wouldn't mind having a play with my own set up, rather than guessing and getting it wrong when I need it.One has to wonder whether a USB meter won't reach you from China before the lockdown ends.
One has to wonder whether a USB meter won't reach you from China before the lockdown ends.:o