21W Solar Panel Charger BigBlue SolarPowa 20 Portable Solar Charger with USB-A/USB-C Ports, IP68 Waterproof, High-Efficiency Lightweight Foldable Solar Panels for Phones, Tablets, Camping, Backpacking
BigBlue SolarPowa 20 is a 21W folding solar panel with USB-A and USB-C ports that folds to about book size and weighs 1.32 lbs, for topping up phones and power banks at camp.
Price range: See on Amazon
What we liked
- + Two USB outputs rated at 5V/3A each (4.2A combined) can charge a phone and a power bank at the same time in full sun
- + Folds to roughly the size of a book at 1.32 lbs, and two carabiners are included for hanging it up at camp
- + Monocrystalline cells with a stated conversion efficiency of up to 24.7 percent, and an IP68 waterproof rating in the title
Trade-offs
- - No built-in battery, so it only charges while the panels sit in direct sunlight and output drops in cloud or shade
- - Output is 5V USB only, so it will not run laptops or recharge a portable power station at a useful rate
Prices change often, so check the current price and availability on Amazon.
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