To summarize my reaction to today’s prevalent stories about the supposed 20-year battery: No, no, no, mainstream media.

The English version of the product page doesn’t mention batteries, but rather capacitors. Capacitors are different things. The difference, according to HowStuffWorks:

A battery is a can full of chemicals and metals. The can could contain something as simple as lemon juice along with a copper strip and a zinc strip, although modern batteries tend to be a bit more sophisticated than that. An electrochemical reaction produces voltage and current. If the reaction is reversible, you have a rechargeable battery. If not you have a disposable battery.

A capacitor is a can full of thin metal sheets held very close together but separated by an insulator. You pump electrons in to charge up the plates, and then the capacitor can pump electrons out again to power a circuit.

(via Ars Technica)