All ActivityMost RecentMost LikesSolutionsRe: What temperature does propane stop flowing? Taken from a web site. -44 degrees Fahrenheit A propane tank's cold temperature limit is -44 degrees Fahrenheit — at that point, propane turns from a gas to a liquid. Propane can only heat your home when it's in a gaseous state, not when it's a liquid. Re: help hooking up my batteries Your battery shown appears to be a 6volt battery is your second battery the same? Your rv should run on 12volts so you need to run your batteries in series like in the diagram which will ADD the voltages. (Don’t pay attention to ah in diagram. You may need to follow some of your wires to determine where they are attached.