Solar chargers are a scam!
In today's guide, we'll focus on solar chargers for smartphones. Can such a charger charge a smartphone? How large does a solar panel need to be to charge a smartphone? Under what conditions can a solar charger charge a smartphone? Will such a charger replace a power bank? Is it better to buy a power bank or a solar charger? You'll also learn how much power you can get from a solar panel and its efficiency. Note: this isn't an episode about photovoltaics—we're talking about portable solar chargers!