Von der Website: https://h2onlybattery.eu/about-us/?lang=en
Our technology philosophy stems from the “Baghdad battery” that originated in ancient Egypt. The innovation we have achieved in this system is the ability to pause and restart energy multiple times using water or other liquid as actuators.
The special metals that contain the power-generating elements inside our products are activated and provide light for over 350 hours of total operation, until they are completely corroded.
Es scheint verschiedenen Modelle zu sein. 40, 62 oder 180 Dollar.
Die Angaben zur maximale Lebensdauer sind 350 Stunden, oder bis zu 1500 Stunden.
Wiki, zur "Baghdad Batterie": https://de.wikipedia.org/wiki/Bagdad-Batterie