RENOGY 3k inverter drains lithium batteries Overnight

[Selavie]

Introducing - Andy ….Hi from Byron bay Australia- was marine installations now building tiny homes and solar installations
Understanding RENOGY 3k inverter !! It drains my 12v x3 lithium batteries overnight???

 

[WorldwideDave]

Hell Selavie. Welcome to the forums.
Tell us more about your setup or post pictures or a diagram.
You running loads on the inverter?
You putting inverter in standby mode or leaving it on?
What size batteries?
Do you know the idle consumption?
What loads do you have connected to it?