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Old 01-01-2019, 04:39 PM   #41
elcaminonut69
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Originally Posted by JRTJH View Post
I'd be very interested in how much drain you have on your batteries and how low they go. If you can run 24 hours and keep them above 70% then you'll probably be "golden"... That said, if you're discharging them to less than 50% every time you tow, they probably won't last much past the warranty period. Something to consider, for sure.....
Ok I got to Savannah yesterday and checked the battery voltage which was 12.4 volts. The trip down was around 70 degrees average and took about 8 and a half hours total. With the cooler temps I don't think the fridge had to work as hard as a normal summer day. I suspect that the hotter the temp the more battery usage.
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Old 01-01-2019, 07:20 PM   #42
JRTJH
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12.4 VDC is about 70-75% charged, so if you started with a full charge, then 8.5 hours in moderately cool temperatures discharged the batteries to near the recommended limit. A longer trip or probably warmer weather would discharge them further as the refrigerator runs longer. It sounds "do-able" in the current situation and maybe OK for a bit longer trips, even in warmer weather. I wouldn't think it would be OK for a 90+F day with a planned stop over at a WalMart parking lot.

A second thought, do you have the trailer batteries connected to the 7 pin "charge line"? If so, then you're really using 4 or 5 amps from the tow truck (not much more amperage can flow through that little wire) as well as the 25% from the battery bank, so the actual battery drain was a bit more than the 25%...

Anyway, at least it works for this kind of travel. Enjoy your trip.
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Old 01-30-2019, 08:21 AM   #43
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Troy, good question; I have a similar set-up and a similar question. The dealer told me that one battery would "likely" power the battery "around" 12 hrs. We all know that its performance is dependent on many variables. Our unit has two batteries but I do not expect to get double the useage of one battery and there are many current draws on our 12v electrical system. For now we work hard to get to shore power as quickly as possible.
Enjoy!
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Old 01-30-2019, 09:18 AM   #44
Local150
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Troy, good question; I have a similar set-up and a similar question. The dealer told me that one battery would "likely" power the battery "around" 12 hrs. We all know that its performance is dependent on many variables. Our unit has two batteries but I do not expect to get double the useage of one battery and there are many current draws on our 12v electrical system. For now we work hard to get to shore power as quickly as possible.
Enjoy!
Not sure how much it helps,but while on the road I run the drug in gas, but also put a bag of ice in the freezer
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