Defend the trees, eat beavers! Protect the earth, charge your phone with the power of the sun!
I found a relatively inexpensive external battery packed with a relatively large capacity already, and the efficiency was further turbocharged with a solar charger.
I can't find the type or the manufacturer of the stuff, I think it's a Chinese OEM. But that is not the point. Nominally, a 10 mAh battery was included, which according to the description can be estimated at 000 mAh due to the solar cell fitted to it. Well, let’s say you think about pee, but it’s suspicious that in a day’s weather, the efficiency of a portable charger can be greatly improved by a small amount of electricity produced by our sun. Not to mention that there are more and more small USB lights on the net, so with this external battery and solar panel we can specifically store the light for the evening hours. So this is a seemingly useful structure, and the price is only 30 forints.
Here you will find: 10000mAh Dual-USB Interface Solar Power Battery Charger Mobile Power Blue