Green House treated us to all sorts of products over the years, from sturdy to creepy, but those releases didn't exactly prepare us for the GH-LED10WBW lantern.
We only wish Green House had chosen a catchier name. A lantern that runs on salt water
The LED lantern generates electricity when it is filled with a mixture of water and salt, thanks to two rods made of magnesium and carbon, respectively.
The former acts as the negative electrode, while the latter plays the part of the positive one, with the salt-water mixture (16 grams to 350 ml) playing the part of the electrolyte.
One “charge” keeps the lantern operational for around eight hours, and an accompanying USB cable can be used for recharging devices during that time too.
The only downside is that the magnesium (Mg) rod has to be switched for a new one (sold separately) every 120 hours of power production. And since we don't know the price of the lantern or the rod itself, we can't tell whether it's worth it or not.
Fortunately, availability isn't far off (mid-September), so we'll find out sooner rather than later.