My friend and I just used this for a 6 day hike in Sequoia and Kings Canyon. We used it to charge our 10,000mAh Anker battery, which was then used to charge a Garmin inReach and an iPhone. This solar panel is the real deal! It worked effortlessly and charged very quickly. I love that it's 15W and weighs almost the same as its popular 10W competitor. We have attached it both at camp and on the back of our packs and both have worked great. Very satisfied!
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