Solar Charger Power Bank 36800mah with 18W PD 5V*3.1A Fast Charging, QC3.0 Portable Charger Solar Power Bank,IP67 Waterproof Camping Gear Accessory for Outdoor (Black)

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Back story, I have purchased 2 of a cheaper brand. Well, come to find out that they didn't work as described. I even bought 3 more for family Xmas gifts.I gave lousy presents this year. What a waste! NOW, I bought these as replacements. Yes, a little more $$$but, worth it, honest. They take about a day to fully realize charge. In Bright sunshine.You then can use these as portable power bank. OR, hook up your phone (it charges 2 items at a time) and the sun charges them without depleted power of the bank. These also can be charged with a USB. Which I use for initial use. Charges faster than solar. Then you keep them charged for whatever...mine sit on my bedroom windowsill. I REALLY LOVE THESE. Good to prep and store for the price. Awaiting for power outages and man made chaos. I truly recommend these. TEL

Doesn't have as much charging power as I was hoping. It gets hot when actively charging itself or another device. It charges nicely besides the heat. I'd say it would be a good emergency device, but not great if you are looking to replace plugging into the wall.

I know the rated amount isn't the actual power storage, but still I expected at least 10,000mah. The power bank is actually about 5500 mah at best. With a full charge on the powerbank (all 4 lights blue) I charged my 5000 mah tablet to 100% once and put 15% on my 2500 mah phone before it was drained. Charging by the solar panel is a very long and slow process, even in the bright Az sunshine. It's been 12 hours and the 1st light still isn't lit up. Good thing it was so cheap. A little disappointed. I was hoping to take advantage of it being sunny all the time here to charge the battery. UPDATE: I've had it in the direct sun for 36 hours, plus under a high output grow light for 36 hours and it doesn't seem to have charged at all. Charged it fully via usb and it charged the laptop to only 70% before it ran dry. That makes it closer to 3500mah.

I am guessing this battery bank is fine with respect to charging and storing power however the connectors are not robust enough for average use. So I never got to use one of these for more than about a month before they broke (I had bought 2 of them). I attempted to repair one of them and it worked for a few days before the incoming connector broke off again. I am guessing these are designed to be stationary and not have the cables being connected and disconnected on a daily basis. Disappointed. ☹️

Got these for Christmas last year for my Son and Husband. They work outside in very remote areas. Little did we know that on September 27th we would all by hit and flooded by hurricane Helene. No power for over 2 weeks and having these during the disaster was a life saver once we could get cell service back. It was the only way we had to charge our phone and light from the flash light was very bright.

On a full charge, it lasts very long. I have not used its solar ability yet but this is a very good alternative for power source.In my case, I had some rodents building nests in my van. I bought an ultrasonic under the hood device and then connected to this. BAM! I it is now a self contain system since I did not want to connect the ultrasonic under the hood device to my car battery. The QC is an added bonus.The other usage that I plan for this is for traveling when I am on the plane since TSA will not allow me to have my car jumper battery pack.I ended up buying 4 and gave some to my sisters too.

I got three for me, my Son, and my Parents. Two days later, my Parents ' power went out. I had fully charged the power bank before I gave it to them. They were able to charge both of their phones AND a tablet, and still had power to spare! Definitely a good purchase!