Q: What kind of devices I can charge?
A: Any devices, which can be charged by USB chargers (e.g. Phones, Camera, GPS, tablets, Lights, Power Bank).
Q: Are “e1” and “e2” chargers compatible with any dynamo?
A: The chargers are compatible with both Bottle/Side Dynamo and Hub Dynamo. The effectiveness of chargers higher when you are using Hub Dynamo. When Chargers are used with Bottle dynamo, it requires more time to generate enough electricity.
Q: How fast does it charge?
A: The charging period depends on the speed of cycling. When riding 18-21 km/h, charger (with Hub Dynamo) outputs 1 Amp and charges at the same speed as a conventional power outlet (which you use at home).
eHarv “e1” Charger Manual