Best wiring setup for 6 solar panels (450W each) to maximize AC300 input?

Product Discussion Solar Panel
1

Hi, I have 6 solar panels, I am using a Bluetti AC300max.
What is the best way to wire the 6 panels — series, parallel, or combined — to maximize the actual input in watt, without exceeding voltage or current limits of the AC300?

2

Hello, to clarify, your device is AC300 or AC200Max. It is best to connect all solar panels in series. This is because the PV input of the equipment has a wide voltage range of 10V~145V, while the maximum input current is only 15A. Series connection increases voltage , resulting in higher efficiency. It is important to note that different types of solar panels should not be mixed, as this will affect efficiency and may damage the panels over time.
if it is AC300， please follow the below image to connect PV
image
If it is AC200max, please follow the below image to connect PV
image

1 Like
3

I don’t understand the statement “Series connection increases both voltage and current,…”

4

I apologize, I misspoke. It should be series connection to increase voltage. Thank you for pointing it out.

1 Like
5

Hi admin,
Thanks for advice. Got it :>

Ps : I do not use Bluetti pannel brand.

6

Ok, all fine for me so I wanted to share a little tip about my setup, in case it helps others encountering the same problem.

My setup:

  • Bluetti AC300 + B230

  • 2 Bluetti T500 adapters (one for the AC300, one for the B230)

So I have three AC300 modules in parallel, providing approximately 600 to 700 W in good weather.

  • Integration with Home Assistant (HA OS) for real-time monitoring (Wi-Fi connection).

Thailand, year-round solar power.

The problem:

I noticed that the “DC Input Source” setting on the AC300 was stuck on “Other,” providing less than 150 W (!), and I couldn’t switch to “PV.” The button was grayed out.

The solution:

After numerous attempts, I found the cause:

:electric_plug: I had plugged in both T500 adapters, even though one of them wasn’t active. As soon as I unplugged the T500 from the AC300 (leaving the AC300 plugged into the B230), the PV button became functional again. So I’m staying in “PV” mode.

It seems the inactive T500 was interfering with the solar input detection.

Since I use Home Assistant, I can still charge the B230 with the second T500 during periods of low sunlight, if needed. This setup works perfectly for me.

I hope this helps someone!

Please let me know if you have any similar problems.