🌞 SunJack 15W Portable ETFE Monocrystalline Solar Charger for Cell Phones, Tablets - Waterproof, Foldable for Backpacking, Camping, Hiking & More Review

My external battery fully charges in about 6 hours in the California sun. Functionally almost perfect. However, I want to step into an ultralight backpack and it seems about 8 ounces heavier than I would like. I can keep looking for something lighter but just as useful.

It has the power to charge my phone and/or power bank as fast as a wall charger, I wouldn't say it costs less than 20w, it costs a little more but I find It's worth it, I'm very satisfied and would recommend it. Comes with 2 charging cables and has a place to hold your phone while charging. very good.

Works much better than expected. It took about a day to charge my 25000mah battery from 0 to 100%. Looks pretty slow, but considering most other solar panels take anywhere from 2-3 days to almost a full week a day, that's pretty quick. Haven't tested it in the field, not in the backyard but will be soon but seems pretty solid and we'll get through it.

I used it on a 4 day hike, my iPhone was 100% charged and my maps app was active the whole time. I use it in my cabin while streaming music. Sunny cloudy. I would recommend it to outdoor adventurers. You really want to make sure all 4 corners are secured with straps so he doesn't hit you from behind.

This is the best time of solar charging! As soon as you open the box, a red LED will light up on the USB port, indicating that it's charging! I tested it outside at 7pm when the sun had just set and that 14 watts were charging! I also have a 5 watt battery pack with a built in battery. I kept it next to a fluorescent light in my basement when it first started charging. Sunny! cloudy! it doesn't matter Sun Jack will give you some UV rays to supercharge your days! Sop looking for Buy Now!

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!

I only received it 3 days ago. it rained 3 days in a row. I liked it. Smartphone - I don't have one, so I don't know if it charges. as long as there is light. The price is a bit more expensive. Overall I liked it. Since my area has power outages almost every day, I hope it can charge my small devices despite the rainy season. I will update my rating.

This is a very practical item. We mount it on the windshield while driving or attach it to our backpack when we are out at night and always have extra energy. Charges quickly in the windshield. Load times while hiking are longer due to the angle at which the panel is hanging, but if we're out all day it'll still get the job done. If not, we just put the charger in the sun as soon as we stop. You can buy the whole set with two battery packs or just the charger and battery pack separately. When…