I just received the new AC60 Portable Power Station. I previously have purchased two Bluetti SP120 Solar Panels last year. When I parallel connect the two SP120 Solar Panels to my AC60, I get a “Overload” warning flashing on the screen. When I look at the Bluetti App, it says “Error PV1 Overvoltage”. However, when I plug just one SP120 Solar Panel into the AC60, it charges fine. The Bluetti app says with just one of the SP120 Solar Panels connected it is receiving 76 W power, 15.7 Volts, 4.8 A Current. I have switched both panels to check and they are producing the same power individually. Why would just two SP120 Solar Panels connected in parallel place the AC60 into PV1 Overload when the power produced is under the 200 W max?
Sounds like you are connecting them in series and not in parallel as you are stating. Series connection will raise the voltage and parallel connection will raise the amperage.
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@GNoonan If you connected them in parallel, there is no problem with it in theory. Could you please take a photo of your connection and we can check?
This looks like a voltage issue, not a wattage problem. The AC60 error “PV1 Overvoltage” means the input voltage is exceeding the allowed PV range, even though total power is under 200W. When two SP120 panels are connected in true parallel, the voltage should remain around 15–18V and only the current should increase. If you’re seeing an overvoltage warning, the panels may accidentally be connected in series, or the MC4 Y-connector could be wired incorrectly. Also check the open-circuit voltage (Voc), especially in bright sunlight where voltage can spike higher than nominal values. While troubleshooting, also verify proper solar bonding and grounding to ensure safe operation and eliminate potential electrical issues. I recommend measuring the combined voltage with a multimeter before connecting to the AC60.