I know this is an old thread but I’m having some issues and a little newer to the solar stuff which is why I go the Bluetti Ac200p in the first place. I have 2 100w panels on the roof of my van. It’s been cloudy each time I go to test, but i’m pulling 24v from them. In chain, they should pull 48v. I ran an amp meter and I am pulling amps as well so the panels should be working. When I plug them into the unit using the MC4 adapter I see the volts registering but the unit isn’t charging. Is that because I need to be pulling 35v in order to see any wats and amps? Seems kinda lame I cant charge the unit off of 200 wats of solar. I really do not want to install two more panels just to charge the unit. Any advice if helpful. I saw the conversation above about the DO50S. I’m not sure what that does to help. Also wondering if it makes a fan noise like the wall charger does.
I also might have figured it our and will try tomorrow, but I think my panels are wired in parallel and not in series, so I’m not pulling the volts needed to start powering the Bluetti. Do you think that might be it?