Comments on: Benefits add up for water-powered calculator

Add a few drops of plain tap water to the removable battery and insert it in the gadget for up to three months of use.

[umbrae]

So instead of using a solar powered calc which has been around for years and can be less that a few dollars, we should pay $24 for a calc that uses up drinking water?

Run a PC off water power and I will be impressed until then I am just confused how this is better than a solar/light powered version that costs less and is readily available.

[dude7895]

The making of solar panels can create lots of pollution.

[DigitalFrog]

I agree, there's much better alternatives.