There are already several devices on the market that can charge smartphones with solar cells. However, it takes too long to charge, so even if you buy it, you often don't use it. This is because it can be charged in a shorter time by using a charger installed in a cafe, office or home. The fact that it cannot be charged without sunlight is also a negative point.

But what about scenes like BBQ and camping? There may be cases where power cannot be secured in such places. Sunlight is also easier to secure than indoors.

"Nipi" was developed for such BBQ and camping scenes. It's a cooler box that can charge your smartphone with solar cells. The developers describe "nipi" as a "21st century survival tool."


The "nipi" solar cells generate electricity that can charge a smartphone in an hour if installed facing the sun during the day. Additional solar cells can be purchased and up to 3 can be used. In this case, quick charging is possible in 20 minutes.


The "nipi" has a built-in 14,000mAh high-capacity lithium polymer battery. If you fully charge the battery, you can charge a general smartphone about 7 times. It takes about 7 hours to charge the built-in lithium polymer battery with a solar cell. You can also use it to charge the battery during the day and then charge your smartphone at night.


An LED light is attached to the "nipi". It can be used ecologically by generating electricity from sunlight during the day and illuminating the campsite with that power at night.


Surprisingly, no solar cell power is used to cool the inside of the cooler box. The "nipi" is a cooler box that uses old-fashioned heat insulating material, and has a mechanism to put ice in it to cool drinks. Highly efficient insulation is used, and with a certain amount of ice, the drink can be kept cold for 6 days. The capacity is 47 liters.


Large size tires are attached, so it is easy to carry even on rough campsites and sandy beaches.


The developer, nipi coolers in the United States, is currently running a campaign to recruit investors on the crowdfunding site kickstarter. At the time of writing the article, one "nipi" is available with a $ 195 investment. The retail price after the campaign is $ 449. Shipment is scheduled to start around March 2016.