Denmark infinity PV has developed the world's smallest solar-powered smartphone charger "HeLi-on". It is said to be one of the few solar chargers that has reached a practical level.
Solar cell chargers that can charge smartphones and tablets in places where power is not available have been on the market for some time. However, due to insufficient power generation of solar cells, many batteries can only be charged by about 50% over 5 to 6 hours. Some even require about 20 hours to fully charge. With this, the sun goes down and it becomes impossible to generate electricity.
The "HeLi-on" uses a film-shaped solar cell that can be carried around inside the main unit. Although the main body size is small, it has made it possible to generate electricity with a solar cell that has a large area.
It takes 2 to 3 hours to charge a smartphone using "HeLi-on" on a sunny day. It can be said that this is a performance that is sufficiently practical.
You can charge your smartphone in 2 to 3 hours
The "HeLi-on" has a built-in battery, and it is possible to charge the built-in battery outdoors and supply power to the smartphone indoors.
If you charge the built-in battery using a solar cell, you can charge your smartphone outdoors or indoors in cloudy weather.
It measures 11.3x3.6x2.8 cm and weighs 105 grams. It's a size that you can carry in your pocket. With this, you may no longer have to worry about your smartphone's battery running out.
A size that you can carry in your pocket
When the smartphone battery runs out, take out the "HeLi-on" and connect it. You can use it immediately.
In addition to smartphones, it is compatible with various USB charging devices such as cameras and portable speakers.
Compatible with USB charging devices (image is an example of charging the camera)
infinityPV is currently running a campaign to recruit investors on kickstarter for the commercialization of "HeLi-on". At the time of writing, one white-collar version of the "HeLi-on" is available with an investment of 625 Danish krone (about 10,100 yen). The amount required to obtain it will increase as the campaign progresses. Shipping is scheduled around July 2016, and shipping to Japan is free.