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CAG · 03-01-2020, 08:54 PM

Maybe it varies by make. My F-350 has a 10 gauge wire on the charge line.
The line from the truck cab to the trailer battery must be less than 30 feet maybe 25 feet. I wasn't saying it would charge a dead battery but just keep it topped off while towing. The fridge doesn't run all of the time.

Here is an article for etrailer about it - https://www.etrailer.com/question-12555.html
Although this shows a smaller number of 10 amps - https://www.engineeringtoolbox.com/a...uge-d_730.html

I just got a 712, once I install it I will run the battery down a bit and take it for a drive to see what it puts out.

03-01-2020, 08:54 PM	#18
CAG Established Member Join Date: Sep 2019 Location: Olympia Posts: 23 M.O.C. #24811	Maybe it varies by make. My F-350 has a 10 gauge wire on the charge line. The line from the truck cab to the trailer battery must be less than 30 feet maybe 25 feet. I wasn't saying it would charge a dead battery but just keep it topped off while towing. The fridge doesn't run all of the time. Here is an article for etrailer about it - https://www.etrailer.com/question-12555.html Although this shows a smaller number of 10 amps - https://www.engineeringtoolbox.com/a...uge-d_730.html I just got a 712, once I install it I will run the battery down a bit and take it for a drive to see what it puts out.