A solar battery is a combined photovoltaic converter that directly converts solar energy into direct current. Accordingly, the so-called “solar battery” for charging other portable devices will have its own battery for storing electricity and a photocell integrated on one / two sides or presented in the form of a clamshell. Some mistakenly believe that such portable chargers with photocells do not need to be fully charged, naively assuming that their own generated current will be enough for everything. Yes, there are such large “clamshells” that they are quite capable of charging their own batteries in one day and feeding the tablet at the same time. But their dimensions are appropriate. Medium and all the smaller Power Bank devices + built-in solar panels, even in perfect sunny weather, will be able to accumulate charge in one day to recharge only a regular smartphone. But this should not be upset at all, since in nature, when there is no access to a public electric network, it’s just a magic wand! But if you need full autonomy without compromise, there are simply amazing variety of serious battery symbiosis devices + photocells on the market, right up to the transforming portable and hybrid solar power station! As they say - to each according to his needs. Korton store employees know the basic needs and offer the most hit devices, come in and rate it.