How I hooked my AC200 to B300 external battery

This is how to hook up the B300 to the AC200 with the special cable that Bluetti makes. I added an UPS switchover relay and the D050S DC Charging Enhancer to be able to use both AC200 inputs. Now I get over 600 watts of solar and 500 watts from the B300 at the same time.
Here is the youtube video:

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