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Old 02-14-2015, 04:35 PM   #1
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Can Residential Refrigerator Inverter/Batteries be Upgraded?

Our 2014 MH has the residential refrigerator with the inverter and two 12 volt batteries. I had the opportunity to see some 2015's earlier this week and wondered what upgrades might be available for our 2014 residential refrigerator.

Following is the question I posed to Forest River followed by their next day response.

My MH has the residential refrigerator powered by an inverter and two 12 volt batteries. I believe four 6 volt batteries would provide longer run time for the refrigerator. I noticed a 2015 Georgetown on the lot which appeared to have four 6 volt batteries. I sure wish mine had four 6 volt batteries. Does Forest River have a program to retrofit from two 12 volt to four 6 volt batteries? (hopefully YES). If not, can four 6ís be substituted for two 12ís or does the inverter need to be changed or anything else special?

To my knowledge Forest River, Inc has never offered 4 6v batteries. We do though in the 2015 offer a 2000w invertor with 4 12v batteries. The setup you have would be 2 12v batteries with a 1000w invertor. There is not at this time a way to retro fit your unit with the 2015 version. The setup you have is by design for that year and was the only setup we had at the time. You can on the other hand purchase a bigger invertor and 2 more batteries to add to your unit. If that is done Forest River, Inc 1 year limited warranty does not cover product enhancement.
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2014 Georgetown XL 334QS (class A with 4 slides)
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Old 02-14-2015, 05:15 PM   #2
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Originally Posted by CA Fisherman View Post
Our 2014 MH has the residential refrigerator with the inverter and two 12 volt batteries. I had the opportunity to see some 2015's earlier this week and wondered what upgrades might be available for our 2014 residential refrigerator.

Following is the question I posed to Forest River followed by their next day response.

My MH has the residential refrigerator powered by an inverter and two 12 volt batteries. I believe four 6 volt batteries would provide longer run time for the refrigerator. I noticed a 2015 Georgetown on the lot which appeared to have four 6 volt batteries. I sure wish mine had four 6 volt batteries. Does Forest River have a program to retrofit from two 12 volt to four 6 volt batteries? (hopefully YES). If not, can four 6’s be substituted for two 12’s or does the inverter need to be changed or anything else special?

To my knowledge Forest River, Inc has never offered 4 6v batteries. We do though in the 2015 offer a 2000w invertor with 4 12v batteries. The setup you have would be 2 12v batteries with a 1000w invertor. There is not at this time a way to retro fit your unit with the 2015 version. The setup you have is by design for that year and was the only setup we had at the time. You can on the other hand purchase a bigger invertor and 2 more batteries to add to your unit. If that is done Forest River, Inc 1 year limited warranty does not cover product enhancement.
Think about if 1 6 volt go's bad then you have no power at all. If a 12v go's bad you still have 1 that would work. If you want to upgrade get 2 deep cell only and change them out if you have duel batteries now (Starting and deep cell)
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Old 02-14-2015, 05:52 PM   #3
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Depending on how much you want to spend you can get deep cycle batteries with more capacity than the two that came with your coach. Do some research and shop around.
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Old 02-14-2015, 05:53 PM   #4
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My current 1000 watt inverter does have two dedicated 12 volt batteries. I wonder if leaving the inverter as is and adding two additional 12 volt batteries for a total of four would provide longer run times for the RR and not be incompatible with the existing inverter?
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Old 02-14-2015, 06:07 PM   #5
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BillMFI, Great idea I will do some research.
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2014 Georgetown XL 334QS (class A with 4 slides)
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Blue Ox Aventa LX tow bar, base plates, diode kit
SMI Stay-IN-Play Duo auxiliary braking system
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Old 02-14-2015, 06:08 PM   #6
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My current 1000 watt inverter does have two dedicated 12 volt batteries. I wonder if leaving the inverter as is and adding two additional 12 volt batteries for a total of four would provide longer run times for the RR and not be incompatible with the existing inverter?
I think you would have to check what your charger puts off and then do the math, now your charging 4 battery's not two. Might take longer but it probably would do the job. The inverter has nothing to do with it unless it's a charger/inverter.
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Old 02-14-2015, 06:54 PM   #7
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I will check it out. Actually the charger is already charging at least four batteries, the two for the inverter and the two under the steps for the MH. It may even be charging the engine compartment battery for a current total of five.
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2014 Georgetown XL 334QS (class A with 4 slides)
2013 Smart Car TOAD
Blue Ox Aventa LX tow bar, base plates, diode kit
SMI Stay-IN-Play Duo auxiliary braking system
25' Off shore blue water fishing boat
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Old 02-14-2015, 07:28 PM   #8
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I will check it out. Actually the charger is already charging at least four batteries, the two for the inverter and the two under the steps for the MH. It may even be charging the engine compartment battery for a current total of five.
Just a question for you I use to be a boater to. Do you have a selector switch installed to isolate the charging? like on boats?
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Old 02-15-2015, 12:05 PM   #9
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Gljurczyk, No I do not have a battery selector isolation switch on my MH like those one most boats, including mine.
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2014 Georgetown XL 334QS (class A with 4 slides)
2013 Smart Car TOAD
Blue Ox Aventa LX tow bar, base plates, diode kit
SMI Stay-IN-Play Duo auxiliary braking system
25' Off shore blue water fishing boat
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Old 02-15-2015, 04:50 PM   #10
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CA... you can absolutely add more batts to the coach if you have room for them or get a rack welded up locally.
The inverter size of 1000W is plenty for your power needs and more batts would simply give you more run time before recharge. If you want to be able to run MORE stuff, then you might consider a bigger inverter. The real question as GJ suggests is do you have a charger built into the inverter that is capable of charging 4 batts v. 2 (House) .... you need a charger that provides at LEAST 10% of the amp hour rating @12V of your bank...so for either 4 6V batts OR 4 12V Group31 batts...anything over 40 amps will suffice...and anything over around 80 amps would be overkill.
I'd recommend 4 6V's in your situation if they fit mainly from a cost standpoint. Otherwise...stay with TRUE deep cycle 12Volts in as large a size as you can fit... just don't mix sizes. 4 Group 31' would give you roughly the same amp hours (400+) as 4 6V's.
If you don't have room for 4...you might be able to fit 3 of the 12V's ...nothing wrong with that.

There is no need for more batteries if you camp plugged in most of the time. If you boondock a lot that fridge can definitely chew up your present capacity. A TRUE battery monitor is something you need if the latter is the case and need to expand your batt bank.
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