Solar Charger, YELOMIN 20000mAh Portable Outdoor Solar Power Bank, Camping External Backup Battery Pack Dual USB 5V 1A/2A Outputs & Flashlights for All Cell Phones, Tablets and Electronic Devices

So I have been using this for last 3 days and it doing pretty good, any slightest amount of light does start charging the battery(At least I think it does cause I see the charging lights).

I took this for a business trip over the weekend because I wanted to use my iPad for a full day with no access to electricity. I was supposed to charge my iPad before I left, but I forgot (I forget frequently). The IPad was at 68% power when I turned it on to begin my day. I plugged it in immediately to the charger and it started charging my iPad right away. Even though I was actively using my iPad, it was still charging and about 2 hours later, it was up to 82% charge. What is most impressive is that I was not in the sunlight at the time. I was in a large convention center with only fluorescent lighting. I was pleasantly surprised. I believe if I had been in the sunlight the power would have been even greater. I noticed that charging my iPad did take a lot of power out of the charger and it was drawing from the fluorescent lighting to recharge itself during the lunch break. Its all good though because I had a really good recharge on the iPad and the charger was renewing itself during the afternoon. In the end, it did exactly what I was hoping for. I did the initial charge on this unit as soon as I received it by putting it in a sunny window. It was 100% charged when I began using it. I would highly recommend this unit to everyone.

So far this very portable charger has worked great. It fits anywhere and it’s light to travel with!Highly recommend.

The charger arrived as described. It's a good size and feels sturdy without being too heavy. Solar charging is definitely best left for emergency purposes, but it will charge anything I'd likely travel with at least a couple times without needing recharging, so that's fine. Am very pleased with it so far.

Great little device with a lot of power. The solar charging capability is an added bonus. It does take all day out on the full sun to fully charge it. One thing I wish it had was USB rapid charging capability. Overall, it is a great device.

I take the Boy Scouts out backpacking and this solar powered charger is a must have. I fully charge it using my at home AC power, and then clip it to my pack to let it trickle charge off the sun. At night I get a full charge, and during the day it slowly replenishes some the used charge. I typically get about 3 to 4 full charges on my iphone X. This device along with prudent use of Airplane mode on my phone, and I am able to take pictures, post updates to parents, and have a phone for emergencies for the boys during our backcountry treks.I also took this with me when my son and I hiked from Rim to River to Rim at the Grand Canyon, and it operated amazingly. This is a must have for any outdoor warrior!

i have a regular power bank but I had been wanting a solar power bank for a while and this one was perfect. It has a compass, and lights with SOS, not to mention the sides have a good silicone grip to avoid dropping it. It's perfect to have for emergencies especially with the recent earthquake I just experienced with my family. it can also be of great use when traveling outdoors and you can just clip it on your backpack. It's definitely one of the coolest power banks I've owned.

I hike a lot so I always wanted a large-capacity power bank. 20000mA is totally sufficient for 2 days camping. A bit heavy compare with my iPhone but works great. I haven’t tried the solar charging now. How long does it take to a full charge?