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The Water Powered Accountants Calculator must be one of the most unique water products on the market. It offers an environmentally friendly solution to a product used every day either in home, work or school whilst being more reliable than solar powered calculators.
Why we like it:
Just when you figured that solar-powered desk calculators were the be all and end all of calculators, along comes the Water Powered Calculator to defy conventional wisdom. The Water Powered Accountants Calculator runs on water, with no need for a light source. Simply add a few drops of water to the removable battery and insert it back into the calculator for up to three months of use. When the display begins to fade, just refill the battery. It’s more reliable than a solar powered calculator and friendlier to the earth too. Unlike solar powered calculators, the Water Powered Accountants Calculator can be used in all light conditions which ensures no more fading displays in the middle of critical calculations. This calculator is a must for every student, virtually guaranteeing that the power will never run out of their calculator in the middle of a math exam – making it a great addition to every pencil case!
How does it work?
Simply remove the battery, fill with water, and replace for up to 3 months use. When the display starts to fade, simply refill and replace in the calculator. The liquid creates a chemical reaction in the fuel cell with a zinc anode and cathode. This makes an electrical current that is good for up to three months worth of power.
Technical Details:
• Only need to refill with water every 2-3 months to maintain a constant supply of energy
• Battery has a minimum continuous life of at least two years
• Battery can be stored in its dry state indefinitely
• Battery can be left to dry out at any time during its life
• Twelve digit display
• Replacement batteries are available