Originally Posted by
Derailed
I can't speak for the OP, but this seems to be a tempting approach from my perspective, at least for some tours. Looks like it weighs just under a pound, and considering that even with a dynamo hub, one would most likely still want a cache battery of some sort. So, using this and dropping a dynamo hub altogether would lead to a weight savings. Given the large storage capacity of 12,000 [mAh] I'd be able to go a few days between charges even with daily use of a tablet.
I agree a cache battery would work for most people, providing power between charge locations.
I also use a powerful headlight and taillight powered by my dynamo as daytime running lights, because I am concerned with auto drivers here in the US.
In addition, I keep my iPhone and Garmin Edge 810 fully charged up all day.
When not running the lights or electronics the dynamo tops up the cache battery, so its always in use.
I don't notice any extra pedal effort, and the weight is not a problem for me.
All in all I think dynamo and battery are a good combo.