I bought this solar panel to charge my 500 watt-hour Bluetti AC50S Portable Power Station while out camping. This panel was about 1/2 the price of the one Bluetti sells, and much more compact. This is my first test with it and I was impressed. It is well built and performed above expectations. I have solar panels on my house so I know how to evaluate them. I doubt the Bluetti ones would do any better that what I was able to measure with this one. The maximum the AC50S can take when charging from solar is 122 watts (tested), so this is a pretty good fit.
Be aware, solar cells are like a long string of 0.5V batteries; any damage to a single cell and power will drop dramatically. Treat these portable panels with care, regardless of which one you buy.
