Hmm, what does that produce?
H2O + NaCl → H2 + Na3OCl?
It must be something like that to produce a solution. They are correct that hydrogen gs can be produced and it's probably ignited to produce the charge so that is quite a good idea (Once hydrogen is ignited, it reacts with oxygen in the air and produces water)! Meaning that was is left in the container is an base solution (which is probably harmless).
Let me know if it works if you get one as it looks an interesting and good buy!
On the ubuntu idea, you can easily get into tablets and change the SD card, but it's probably not worth it!
Yes. This battery is definitely even cooler than solar ones, making it a very clean form of energy to use on smartphones, tablets and more. Since this one is available for preorder, I might buy one ahead for when it starts shipping I could get a taste of this whole new experience. Imagine the Raspberry Pi 3 + Water and Salt power bank. It will be a very convenient and portable setup!