The world's smallest key-filling smartphone charger

Smartphones have been a key feature of our everyday lives. But there are not all wall plugs. The solution is presented as the smallest mechanical charger in the world and can fit into your chain or pocket.

This small charger is powered by human strength. Turn the key into it and electricity is transformed into mechanical energy. The phone remains charged this way. This invention is ideal for people who walk or perform other work in remote areas. They may include experts on geophysics and wildlife.

This makes the charger open and can freely load items. If you need to call, give someone a note, light a flashlight or show friends your presence, then the charger solves all of these issues.

The power supply is between 100 and 30 mA when the key is switched, but critics think that some of the currents are missing. It was initially developed on 25 January 2021 and is now available on the website of Crowdfunding.

Based on the special build, it is simple to maintain and use when an emergency charging device is called. Just a few minutes of charging will revive the handset if the phone is completely gone. You can select between four types of cable to suit the cable to your phone. But it's also the smallest mechanical phone charger ever made, which is still special.

The website is priced at EUR 34, or some 6,200 according to crowdfunding.

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