Bluetti EB3A tips and tricks?

[Joezamboni]

Bought one of this for camping and blackouts. Live in California though and my power bill in a condo has gone up 250% (from $41 to $105 a month). One Device seems to be responsible for about 10% of my power use (air purifier). Wanted to see if there was a dual input to one device 125v switch so I could easily switch from the home power to bluetti for use and if there is anyway to get around the low charging drain that occurs when a solar panel is plugged in and the sun passes it(some kind of switch that be set on a timer or controller) it’s just hooked up to a 100w Renogy but figuring I may be able to at least save $10 a month if I can easily utilize it.