Yes?
Still haven't bought one yet but think it's a good idea I do.
I'm sorry. I never got back to post this. The one I have isn't available anymore, new models and shortages and all that jazz.
I wanted to get another one though to keep somewhere else and I've ordered this one:
https://smile.amazon.com/gp/product/B0834WYJ11/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
It is the same kind I already have except it is 32,800 mAh instead of the 25,000 my current one is.
I've been very pleased with it. I just take it outside and lay it on the roof of the car for a few hours and it charges back up completely. Hint: leave a charging cord on it and drape the charging cord over your driver's door and around the door handle if it will reach. This prevents you from doing something slightly daffy like driving off with it on the roof of the car...
To charge the phone quickly, I do have to use the Samsung cord, but that holds true for quickly charging from anything. Don't know what the difference is, but there must be one.
I can also charge other things up with it. I've recharged my camera, my tablet, and a little flashlight.
I really like it.
I do have several of the chargers that you charge up electrically and then can discharge. I haven't found one that charges quickly at all. Usually takes more time with them plugged into the power supply than it does to recharge the solar one. The solar one does, however, depend on a good supply of sunshine. If that is a winter problem in your area, you might want to get a solar and an electrically charged unit.