Thanks for finding Bright-Bike! If you have any particular questions, I can answer them here or you can email me - david.dean@brightbikelabs.com.

There are some cheaper alternatives out there, but they do tend to be poorly designed (and of course Made in China). For example, I can tell you that the "Human Creations" charger has no overvoltage protection - if you connect it to a hub dynamo and go over 25 MPH, it's going to overheat and quickly fail.

As you noticed, we do have a lot of additional information on the FAQ page (and yes, the Revolution does work with DC, all the way up to 52V). A cheaper product could be nice for riding around town, but the Revolution will hold up for touring, randonneuring, long day rides, etc. It's also waterproof and made in the USA.

Anyway, I hope that helps to differentiate the two chargers. Again, feel free to email me with any questions!

- Dave