Tim wrote:I hope to be able to tour with a small netbook or maybe even a Macbook Air therefore I chose the battery with the higher voltage output.
I think you are perhaps a little over-ambitious. There are probably not enough hours in a day to keep your devices charged. And you will end carrying a swag of paraphernalia in the attempt.
I have been using a Asus eee PC for touring. It has a 10 hour battery which I have found to be more than adequate between charging opportunities. Encouraged, next tour I'm taking a Macbook Air, even though its battery life is expected to be much shorter. Used judiciously it will be sufficient given my experience with the eee PC, and its a whole lot easier to use with a full sized keyboard and a trackpad that my clumsy fingers can actually make use of. If you choose a netbook my tip is to take a mini travel mouse.
It's unrealistic to think you can tour without regularly resorting to mains power. My dynamo hub will be used only to power and charge my smartphone, which is my bike computer, GPS and audible book player, so that I can have it running all the time I'm on the bike. Just a Reecharge or Pedalpower and one connector - I haven't decided which yet but the Reecharge is much more convenient to mount and connect, although it has less battery capacity. It should be fine though if I start out with both Reecharge and smartphone fully charged off mains power. I'll do a test before deciding.
The Macbook Air and camera batteries will only get a charge when there is mains power available.