The concept of solar-powered power banks is appealing; however, in practice, every model reviewed proved to be ineffective and sometimes dangerous as they can overheat.
Solar-powered power banks, when placed in direct sunlight, can reach temperatures around 80°C/176°F, creating risks for lithium-ion batteries and often preventing charging.
After extensive testing, I found that no solar-powered power bank charged adequately, often failing to reach even half capacity after days in the sun.
Though there are better options, such as power banks designed for small solar panels or solar power stations, I can't recommend any solar-powered power bank.
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