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02-19-2019, 11:51 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Michigan
Posts: 542
THOR #9522
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Battery maintainer via 12V socket
Hi All
Sorry to start a new thread but I'm not finding what I want with search. Since my converter doesn't maintain the chassis battery on my class C when on shore power (by design according to Thor). I'm looking for a float charger that would run off 110V inside the coach and back feed the chassis battery via the cig lighter socket on the dash? Sounds easy to find but I'm striking out here and on amazon.
Thanks,
Pete
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Pete and Carolynn Foss from Oxford, MI
2018 Four Winds 31W
1999 Aero Cub F-21 trailer
1977 Tioga 24 foot RV
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02-20-2019, 01:21 AM
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#2
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,326
THOR #7035
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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02-20-2019, 01:34 AM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: Axis 25.4
State: California
Posts: 784
THOR #6582
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Hmmm. Battery Tender and others don't use the cig lighter, I see. You could wire to the battery with a fuse (in kit ususally) thru the firewall to the SAE 12v plug that's included but it would be too short and need a splice. There are also solar chargers.
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I'm wearing trifocals now but my hindsight is 20/20.
*************
Bilsteins and Sumos front and rear...HUGE! FatMat and Hoodliner...HUGE!
Hellwig sway bars F&R, 235/85 Hankook ATM, alignment...HUGE!!!
Battery watering, 260watts Solar and BigFeets to make life easier.
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02-20-2019, 01:47 AM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Michigan
Posts: 542
THOR #9522
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Quote:
Originally Posted by 16ACE27
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Thanks Ted I found that with the 750 mA maintainer right after I posted here. So my search fu was fine just slow.
And I do need to verify the 12V socket is always on. I'm pretty sure it is.
Pete
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Pete and Carolynn Foss from Oxford, MI
2018 Four Winds 31W
1999 Aero Cub F-21 trailer
1977 Tioga 24 foot RV
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02-20-2019, 01:57 AM
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#5
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Member
State: Arizona
Posts: 40
THOR #13531
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Quote:
Originally Posted by petefoss
Hi All
Sorry to start a new thread but I'm not finding what I want with search. Since my converter doesn't maintain the chassis battery on my class C when on shore power (by design according to Thor). I'm looking for a float charger that would run off 110V inside the coach and back feed the chassis battery via the cig lighter socket on the dash? Sounds easy to find but I'm striking out here and on amazon.
Thanks,
Pete
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Hi there Pete , I have a Thor 23U that is plugged in with an adapter so I can use my shore cable to trickle charge house battery with my main battery switch to USE so the battery will get and maintain a charge through the converter. The RV is a 2018 model. I do check the batteries , house and cabe with a hydrometer and check water levels . Hope this helps you.
Sent from my 5049S using Thor RV Forum mobile app
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02-20-2019, 02:17 AM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Michigan
Posts: 542
THOR #9522
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The issue I have is keeping the chassis battery charged since even on shore power it's not connected in. I can only maintain the chassis battery from the engine alternator or an external charger. Silly setup IMHO but common on Thor's class Cs.
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Pete and Carolynn Foss from Oxford, MI
2018 Four Winds 31W
1999 Aero Cub F-21 trailer
1977 Tioga 24 foot RV
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02-20-2019, 06:41 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: 2016 Siesta Sprinter 24ST
State: Florida
Posts: 604
THOR #2812
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I use the Battery Minder 1500 and the power plug accessory. (cigarette lighter)
Keeps the battery charged and de-sulfates for longer life. and it's small.
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U.S. Coast Guard retired- 1956-1985
Pensacola, Florida
2016 Siesta 24ST
1972 Moto Guzzi Eldorado
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02-20-2019, 08:49 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31W
State: Michigan
Posts: 542
THOR #9522
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What do you think of a small solar panel instead to maintain chassis battery? 10 watt, 15 watt?
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Pete and Carolynn Foss from Oxford, MI
2018 Four Winds 31W
1999 Aero Cub F-21 trailer
1977 Tioga 24 foot RV
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02-20-2019, 10:24 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: California
Posts: 159
THOR #3788
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__________________
Richard M / Carol B
2020 Entegra Accolade 37K
2021 F150 Platinum
FMCA #F432587
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02-20-2019, 10:32 PM
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#10
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 31E (2019)
State: California
Posts: 249
THOR #12270
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i use a black n decker battery tender. it's got a power outlet plug.
https://www.amazon.com/BLACK-DECKER-...s%2C195&sr=8-5
i have a 31E and the chassis does not charge via shore power (by design from thor.) im just curious why thor would design it like that. for what reason?
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02-20-2019, 11:18 PM
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#11
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Quote:
Originally Posted by gnach
Hmmm. Battery Tender and others don't use the cig lighter, I see. You could wire to the battery with a fuse (in kit ususally) thru the firewall to the SAE 12v plug that's included but it would be too short and need a splice. There are also solar chargers.
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Deltran does sell a 12-volt power plug connector; so that you can use that plug...
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"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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02-22-2019, 09:30 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: Chateau 31L
State: Florida
Posts: 2,063
THOR #12189
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Quote:
Originally Posted by Diemaster
i use a black n decker battery tender. it's got a power outlet plug.
https://www.amazon.com/BLACK-DECKER-...s%2C195&sr=8-5
i have a 31E and the chassis does not charge via shore power (by design from thor.) im just curious why thor would design it like that. for what reason?
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I have a 31L and it charges. I also have an Emer switch on the dash that will cop juice from the house if needed. The generator will charge it too. I guess that's if you're boon docking? It may have something to do with the Use/Store switch, though I can't be sure. I thought I read that somewhere.
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