The cost-efficient LED lamp, labeled the WaterLight lantern, uses saltwater to charge its batteries. Designed by Colombian company E-Dina in collaboration with Wunderman Thompson, the portable lantern is designed for those with little access to electricity.
Instead of power outlets, the water-activated magnesium battery causes a reaction when it contacts brine. Therefore, it can be charged using ocean water, regular saltwater, or even urine in dire situations. Moreover, the WaterLight lantern is more efficient than a solar-powered lamp as the energy delivery is immediate once the device is filled with water, unlike solar energy.
Made with water-resistant recyclable materials, the WaterLight lantern boasts a USB port to charge other devices and only requires half a letter of saltwater for 45 days of electricity and LED usage.
Image Credit: Yanko Design