A lamp powered by salt water

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Via salt.ph:

Add 1 glass of water and 2 tablespoons of salt, use the lamp for 8 hours.

Cost Effective. There are over 7,000 islands in the Philippines and most of these islands do not have access to electricity. We want to eliminate the sustaining cost in areas that rely on kerosene/battery powered lamps and candles as their main source of lighting. And to provide a more efficient light source for people who use lamps and candles as an alternative source of lighting. Replace consumable every 6 months! Using SALt lamp 8 hours a day every day will give you an anode lifespan of 6 months. Use this as an alternative light source will prolong the life of your anode for more than a year.

Watch the LEDs glow! Light your way with a lamp powered by saltwater.

Safe. There are no materials and components inside the lamp that may cause fire accidents. One less thing to worry about for families that rely on kerosene lamps as their main source of lighting. This lamp uses the science behind the Galvanic cell, the basis for battery-making, changing the electrolytes to a non-toxic, saline solution — making the entire process safe and harmless.

Charge your smartphones! For emergencies, you can charge your smartphone using this lamp. Just plug in your USB cable.

Environmentally Friendly. According to a study conducted by the United Nations, The Philippines ranked 3rd as the most disaster prone country in the whole world. And in disaster situations such as super typhoons, earthquakes — a steady supply of food, drinking water and sustainable light source is very essential. The importance of the product in terms of short term usability and as a long term household staple can be attributed to how easy and common the elements needed to power the lamps are. It also does not emit harmful gasses and leaves minimal carbon footprint making it very environmentally friendly.

You can also use the ocean water to power up your lamp!

If you are living along the coastline, no need to create your saline solution, instead… use the ocean water to operate your lamp.
Easy to Use. The salinity of ocean-water can operate your lamp. Use the ocean-water to power up your lamp and it will give you 8 hours of running-time. Salinity is expressed by the amount of salt found in 1,000 grams of water. The average ocean salinity is 35 parts per thousand. Store ocean-water in bottles and use them to power up you lamp anytime, anywhere.

*here: salt.ph