Bought 2 "800 watt" solar panels.......yeah right, 100 watt panels with false advertising.
Still, as a EE I'm pretty damn impressed as yesterday I tested a cheap no-name flexible membrane panel for actual output. Going to put Solar on a RV trailer.
In full noon day sun, it was outputting ~20 volts with no load.
I put a 10 watt 3 ohm resistor across the panel output as a load. Hah, resistor started to get real warm. Measured 3.5 amps under load at ~12vdc. So it was outputting about 42 watts.
That was with one panel, I have 2. So will be able to trickle charge the 4, 6VDC golf cart batteries at about 6-7 amps which is a pretty high trickle charge!
Not too shabby for under $200.
https://www.amazon.com/dp/B0D1KL1FLK?ref=ppx_yo2ov_dt_b_product_details&th=1