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Alternative methods to charge your laptop

23 Oct 2015  | Cabe Atwell

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Portable wind turbines

Wind is another renewable energy source that can be harnessed to charge laptops and function much in the same fashion as solar but with a little more bulk and rigidity. They also harvest renewable energy and store it in battery form. Unlike their massive counterparts, however, they tend to use vertical-mounted blades utilising more surface area in a smaller package.

Skajaquoda's Trinity is one such charger that takes advantage of the vertical fan placement but places it in a small 12in package. When needed, the tripod-like legs are pulled from the tubular body and the blades pop out from the sides, making it ready to go. As the blades spin, they rotate an internal 15W generator that produces power and stores it in an internal 15,000mAh lithium-polymer battery.


Portable wind turbines such as Skajaquoda's Trinity are capable of generating 15V and storing the energy in its onboard 15,000mAh lithium-polymer battery.

The device is outfitted with multiple DC-out connections, including USB, to charge most devices. While the unit itself is waterproof, it does have its drawbacks, most notably, a lack of wind.

Micro hydroelectric power plants

Like those mentioned before, water can also be a renewable resource harnessed to power mobile devices such as laptops, provided users have a constant source of running water.

That's the idea behind micro hydroelectric power plants, which Blue Freedom has capitalised on with their device of the same name. Unlike other portable hydroelectric generators, the Blue Freedom is small enough to fit inside of a pocket, making it one of more portable devices to be had.

Blue Freedom

The Blue Freedom is a small hydropower plant that uses the power of water to charge portable devices.

Like Skajaquoda's Trinity, the Blue Freedom stores its harnessed energy in an on-board battery ready to be utilised when needed. When placed in running water, the fan blades spin a 5W generator that stores the collected power in an on-board 5,000mAh lithium-polymer battery.

In actuality, the fan unit stays in the water and transmits the garnered power over a wire to a base-station that houses the battery and connection options for most mobile devices and notebooks. While it is capable of charging most everything, it takes a considerable amount of time to do so and can only be utilised by running bodies of water.

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