was surprised by the high quality of this solar panel at around $145 for a 100 watt panel. The production and materials used appear to be very similar to the 120 watt Bluetti panel I have. I used a clever pad to charge my Bluetti eb 70 and it put out about 75 out of 100 watts in the setting sun which I was very happy with. I think at 12 he could have produced a little more, but that's a pretty good result. But I bought the panel because the Bluetti panel needs 200w to charge and the 120w Bluetti panel only produces about 80w. I tried putting them in series but it didn't work, I think I had too many volts for the eb 70. I really liked the Clever panel and didn't want to return it. I ordered a $10 parallel adapter kit and paralleled the panels and they put out 150 watts! So problem solved for me and I love the Clever Panel! A few days later, the panel was producing 87 watts earlier in the day.