According to the designers ”The system uses
an external water tank, hence the Plantbook
continuously absorbs water when soaking it
in water and generates electrolysis using
power stored in a solar heat plate installed
on the top. In this process, it is operated
using hydrogen as energy source and
discharges oxygen. If you put it into a water
bottle while you don’t use the laptop, it
automatically charges a battery and
discharges oxygen.
A leaf-shaped strap hanging on the top is
made with silicon. It plays a role of a hand
ring and a green LED indicates when the
battery is charged. Using this LED, users can
check how much spare capacity the batter
has”.
More detail : http://bit.ly/uvxhTg
