Need suggestions for rigid panels for ac300 and ONE b300

Hi! I just got my ac300 and (only one) b300. Most everything I read on setting up is with two b300s. Can I use (4) renogy 320 watt 24 volt solar panels? I’m guessing (2)series in both inputs? Or is it best to use (6) Rich mega 200 watt? I’m such a newbie! I do need rigid panels, in upstate New York it gets a lot of weather. What can I do to get the most input to this system? (Minus the 10% buffer needed for high/cold operating).thank you!

@TSnow , It is okay to charge the AC300 with rigid solar panels, but please note that your rigid solar panel must meet.

  1. no micro-inverter
  2. Open circuit voltage 12-150V
  3. Rooftop solar panels are available with MC4 connectors

Regarding the 4 renogy 320 watt 24v solar panels you mentioned, they can be connected in series. The open circuit voltage is 96V when connected in series, which is in line with the open circuit voltage range of AC300.

…so 6 of these 320 watt panels would be better to charge (one)AC300 and (one) B300, correct? With 3 panels on 2 inputs, two strings of 3(s). Since this would be around 120Voc and only 960watts per string, can I also use the solar input on the B300 to add a separate 200 watt panel or small wind turbine? Would the additional input be considered mixing the panels, or seen by the AC300 as a separate energy source (like charging from an AC wall outlet)? Thank you for your info!

  • Maximum Power: 320W
  • Maximum System Voltage: 1000V DC (UL)
  • Open-Circuit Voltage (Voc): 40.1V
  • Optimum Operating Voltage (Vmp): 32.7 V
  • Optimum Operating Current (Imp): 9.79 A
  • Short-Circuit Current (Isc): 10.36 A
  • Maximum Series Fuse Rating: 15A
  • Operating Temperature: -40°F to 185°F

charging the b300 directly has nothing to do with the ac300 and can be done at the same time that you are inputting solar via the ac300, in my experience. on cloudy days I have augmented the solar with 48v battery input directly into the b300(although limited to 200w augmentation)