Nigel's Eco Store > Green Office › Desk Accessories › Water powered calculator

Water-Powered Calculator (8-digit)

One of the most unique water powered products on the market. To power this pocket calculator, you just add water to the removable water battery in the back - no need for batteries ever again.

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Price: £7.99 incl. VAT

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For help and advice, or to order over the phone,
please call 0800 288 8970.

More information

To maintain a constant supply of energy simply refill as the water evaporates, typically every 2 to 3 months. The H2O battery has a minimum continuous life of at least 2 years. In addition to this, the H2O battery (unlike all other conventional batteries) can be stored in its dry state indefinitely and can be left to dry out at any time during its life and its life extended indefinitely.

As all the components of the H2O battery are recyclable, the benefits over traditional batteries are countless.

Unlike conventional solar powered calculators the H2O Compact Calculator can be used in all light conditions... no more fading displays at that critical moment. The H2O batteries are easy to refill and can provide constant power for up to 3 months with just a few drops of water.

Dimensions: 75 x 18 x 110 mm

This product usually ships within 24 hours. Standard UK delivery cost is £3.95.

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Customer Reviews

nice gadget for the office-greenie some people just don't need another tie with the wrong colour - here you have not only a useful and green gift for the presentee, but it makes a nice statement sitting on his/her table and gets conversations started (even if the functions are often not enough for the advanced use of engineers). sonja