Look those solar panel ones are a gimmick unless you are a camper. You need like a full afternoon of sunlight to get a decent charge going, and it'll take days of direct sunlight with the size of that panel to get a full battery. If you only need to store power, get a different power bank. If you travel often and don't necessarily have access to a whole outlet situation, the solar bank is superior
If that is a genuine concern to you, you're better off buying separate solar panels (even just the portable kind) if you expect to get any kind of usable energy. Not only is the area of solar panels that they put on those power banks practically useless, they also use the cheapest garbage panels available that are only good enough to power a handheld non-graphing calculator.
Look those solar panel ones are a gimmick unless you are a camper. You need like a full afternoon of sunlight to get a decent charge going, and it'll take days of direct sunlight with the size of that panel to get a full battery. If you only need to store power, get a different power bank. If you travel often and don't necessarily have access to a whole outlet situation, the solar bank is superior
Well, when the grid breaks down, the solar bank is the only way we could charge our phones, though I think we'd have larger problems then.
If that is a genuine concern to you, you're better off buying separate solar panels (even just the portable kind) if you expect to get any kind of usable energy. Not only is the area of solar panels that they put on those power banks practically useless, they also use the cheapest garbage panels available that are only good enough to power a handheld non-graphing calculator.