Feeke Solar-Charger-Power-Bank - 36800mAh Portable Charger,QC3.0 Fast Charger Dual USB Port Built-in Led Flashlight and Compass for All Cell Phone and Electronic Devices(Deep Black)

Takes to long to charge

I bought a second a year after the first because its so reliable. This thing has more MAH than any other I've found in its price range, let along 2-3x the cost and it's solar so I technically never have to use any electricity to charge it.I love this for my long medical trips and it charges Mt Samsung Note 20Ultra + earbuds seamlessly multiple times without issue. You can even charge while using the device in a pinch without issue. (Though I'd check the safety on that if I were you I could well be doing a stupid 😆)

Great little gadget. They forgot that a compass won't work properly right next to a strong battery, but that's not the main reason one would use this.

If I could give more stars I probably would. I was nervous delivery wasn't the best. They were left in a spot that wasn't ideal. Thankfully they were water proof and it doesn't seem that they were exposed long. We took these for a trip and we needed something that could be more reliable. They charged themselves while walking around in the sun which is awesomeWe haven't used them since being back but I did notice they don't seem to hold the battery long if not exposed to sun or a charge source of some kind. This is the only downside if they could hold the charge I think they'd be awesome to keep into the car in case you break down or in an emergency kit

The media could not be loaded.  I got this intrigued by the battery capacity in a small form factor that could have been a great option to travel with. Solar charging is an additional feature too that could be very useful in situations when you are outdoors and there is no other AC power source to keep it charged. The very first thing I did is to fully charge and measure the capacitance (mAH) of these. I was really disappointed and would not recommend this product that is very reasonably priced but internally it is false marketing with higher numbers to disguise consumers.My 2 cents are below:Pros:- Can charge multiple devices simultaneously- Solar charging is a key feature but in my experience, it charges very slow & I ended up charging with a wall charger- IP67 is waterproof and feels rugged overall- Dual LED flashlights (680 lumens) are a nice addition to these- Compass on the back of the power bank can be useful while outdoor recreations- One of the slimmest & lightweight solar power banks in the market- LED indicators in the device are very useful- Very reasonably priced for the features it offersCons:- On my tests ( I ran twice), this power bank only gave output capacitance of approximately 4200 mAH instead of claimed 36800 mAH. That's just 11% efficiency. I used a multimeter tester and a load with 2A power needs to test these (Results attached). These are really disappointing numbers & I believe battery capacity is false marketing being done for this product- No fast USB-C PD (18W) charging in these- No mention of safety standards like battery overcharge protection, overcurrent protection, output overvoltage protection, temperature control, short circuit protection, etc anywhere giving me less confidence in these- Not a very great build quality. It feels plasticky & does not feel premium. Even the port cap fell off while using it- Mismatch in use of manual directions. They say double click power button for flashlights but it works with a long press instead- Came in generic packaging without any branding- I wish a travel pouch was included that would have made it so convenient to carry along and I believe that this should be a standard across all other brands too

OK I need to have USB devices stay powered in the field. I am a field engineer and use lots of USB charged and powered things. And dead batteries are not an option. And this thing is totally the solution. Now they kind of hint that the solar panel is not for charging up the battery. from what I can tell it would do the job --- eventually, but a long eventually. But it has a charge port. Normally a dump battery like this is always dead when you most need it. You charge it up and it slowly discharges while you forget to keep it charged. This unit has solved that problem. I charge it up and put it where it can see some light and when I have a problem and have to grab it, it is still 100% charged and it will handle charging/running a couple high draw devices at a time. And it will do that for several hours. So totally happy with it.

I've got two other Anker battery packs that are 10000mah. They are all similar in size and weight. This battery works great until it dies. It runs out of juice in about a third of the time as the Anker packs, and those are years older. The flip down battery door is very fragile and pops off frequently.I was excited about the solar charging feature, but it ended up being impractical for me. When you place the solar panel in direct sunlight, a green LED turns on, notifying you that it is solar charging. That's great, but I was hoping to charge this inside the car. Even in the brightest spots inside my car, I have never noticed the blue LED charge-level indicators change. The solar charging has made no difference.The built-in LEDs for the flashlight feature work well and are very bright.

Nothing to dislike. Had this power bank for a few months. It has never let me down. This thing has a lot of power. Cool that it's solar and has a very bright flashlight.