28W Monocrystalline Folding Solar Charging Panel Introduction： Portable solar chargers are finally proving to be a viable option for powering outdoors due to the increased efficiency and reduced cost of solar cells. Users in remote locations may carry smartphones, GoPros, headlamps, tablets, cameras, headphones, and PLB or GPS devices. Families on long weekend trips are likely to carry multiple smartphones, tablets, speakers, laptops, lights, and more. Rafters, climbers, bike backpackers and mountain bikers on weekend assignments are likely to haul out more high-powered lights and GoPros, radios and other electronics.   By harnessing the sun's energy, anyone can charge their plethora of devices without carrying physical batteries or draining the batteries in a vehicle or camper. From portable solar chargers that can hold multiple devices during family camping trips, to power banks that hold maximum power, to lightweight options for backcountry users weighing less than a pound, we've reviewed the top models to find the perfect fit Best portable solar charger use for most outdoor activities. Plus, we've got tips and tricks on how to get the most out of your portable solar panels, power banks, and chargers.   Solar Advantages：   (1) Universal: The sun shines on the earth, and there are no geographical restrictions. No matter whether it is land or sea, no matter whether it is mountains or islands, it is everywhere. It can be directly developed and utilized, and it is easy to collect and does not need to be mined and transported. (2) Harmless: The development and utilization of solar energy will not pollute the environment. It is one of the cleanest energy sources, which is extremely valuable in today's increasingly serious environmental pollution. (3) Huge: The solar radiation energy reaching the earth's surface every year is equivalent to about 130 trillion tons of coal, and its total amount is the largest energy that can be developed in the world today. (4) Long-term: According to the estimation of the rate of nuclear energy generated by the sun, the storage of hydrogen is enough to last for tens of billions of years, and the lifespan of the earth is also about billions of years. In this sense, it can be said that the energy of the sun is used for inexhaustible.