Join Date: Feb 2007
Location: Spain + Germany
My Motorhome: Four Winds RV
Thanked 669 Times in 620 Posts
No it won't use fuel in standby. I assume you mean standby on automatic?
Did you read my post on the other thread, keeping it on automatic will use it's rather limited life span much more quickly than necessary. That will end up being costly in the long run. It is best to turn it on manually when it's really needed and off again when it's replaced sufficient charge, Alan.