"This all-in-one portable charger features built-in iPhone and USB-C cables, a wall plug for easy recharging, and true 18W fast charging for both Apple and Android devices. With a 10,050mAh battery, it's compact, powerful, and perfect for travel or daily use. ".
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I've been testing the best power banks for camping in several ways over multiple years. I've taken them on car camping trips, exposing them to sun and wind, with temperatures dropping down into the forties at ni.
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Sandberg Outdoor Solar Powerbank 24000 is a portable battery which is charged via a USB port or the built-in solar cells. You get up to 9 charging cycles for a typical smartphone and with its solid and rain proof packaging it keeps going even under harsh conditions.
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You could do much better just getting a battery and inverter. With a 400W panel, it would charge in (280Wh / 400W =. A standard refrigerator will require about 2000Wh per day.
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