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07-21-2017, 08:03 PM
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#1
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Junior Member
Brand: Thor Motor Coach
State: West Virginia
Posts: 13
THOR #1181
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Hose Battery Replacement
I am looking to replace the cheap house batteries on my 2015 MiraMar 34.2 Thinking of Group 34 AGM ? Any advice ?
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07-28-2017, 07:21 AM
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#2
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Member
State: California
Posts: 44
THOR #6924
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Quote:
Originally Posted by kequeen
I am looking to replace the cheap house batteries on my 2015 MiraMar 34.2 Thinking of Group 34 AGM ? Any advice ?
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Try looking at Vmax AGM 6v batteries. Just a suggestion.
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07-28-2017, 10:52 AM
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#3
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Windsport 29M
State: Indiana
Posts: 3,692
THOR #5196
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You may need a different charger for AGM batteries, I believe they require a different charging rate.
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07-28-2017, 11:12 AM
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#4
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,123
THOR #7035
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Quote:
Originally Posted by SuperD
You may need a different charger for AGM batteries, I believe they require a different charging rate.
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No special charger for AGM batteries, they use the same lead-acid chemistry.
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07-28-2017, 11:26 AM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Windsport 29M
State: Indiana
Posts: 3,692
THOR #5196
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As with all gelled and sealed units, AGM batteries are sensitive to overcharging. A charge to 2.40V/cell (and higher) is fine; however, the float charge should be reduced to between 2.25 and 2.30V/cell (summer temperatures may require lower voltages). Automotive charging systems for flooded lead acid often have a fixed float voltage setting of 14.40V (2.40V/cell); a direct replacement with a sealed unit could overcharge the battery on a long drive.
Found this. I would do some checking on what type of charger you have and make sure it's ok. I would hate to see you buy expensive batteries and then ruin them. Hopefully someone with AGM experience will chime in.
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07-28-2017, 12:20 PM
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#6
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,123
THOR #7035
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Quote:
Originally Posted by SuperD
As with all gelled and sealed units, AGM batteries are sensitive to overcharging. A charge to 2.40V/cell (and higher) is fine; however, the float charge should be reduced to between 2.25 and 2.30V/cell (summer temperatures may require lower voltages). Automotive charging systems for flooded lead acid often have a fixed float voltage setting of 14.40V (2.40V/cell); a direct replacement with a sealed unit could overcharge the battery on a long drive.
Found this. I would do some checking on what type of charger you have and make sure it's ok. I would hate to see you buy expensive batteries and then ruin them. Hopefully someone with AGM experience will chime in.
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Key words "could" and "long drive" talking about charging from an automotive alternator and regulator, not from a MH converter that kicks the voltage down to 13.1 volts when fully charged.
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07-28-2017, 04:44 PM
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#7
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Junior Member
Brand: Thor Motor Coach
State: West Virginia
Posts: 13
THOR #1181
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Thanks to everyone for the replies, I will do some research into charging AGM Batteries
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07-28-2017, 09:40 PM
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#8
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 13
THOR #6872
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Battery water
Do you really need to use distilled water in your batteries? If so where do you get it?
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07-28-2017, 09:42 PM
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#9
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Junior Member
Brand: Thor Motor Coach
State: West Virginia
Posts: 13
THOR #1181
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Quote:
Originally Posted by jjcrawfish
Do you really need to use distilled water in your batteries? If so where do you get it?
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WalMart caries distilled water by the gallon, in the grocery water area
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07-28-2017, 09:45 PM
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#10
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 13
THOR #6872
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Thanks I'll get some.
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07-28-2017, 10:59 PM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: Maryland
Posts: 252
THOR #3227
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Distilled water - absolutely. Distilled should also be used in the radiator.
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Jim K - Avenue, Maryland
2016 Thor Hurricane 35C
2015 Ford F-150 King Ranch
2013 Chrysler 300 "S", 1936 Chrysler C-8
2012 Jeep Liberty Limited Edition
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07-29-2017, 12:45 AM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Windsport 29M
State: Indiana
Posts: 3,692
THOR #5196
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Tap water contains minerals which will destroy a battery quickly. Use only distilled water in lead acid batteries.
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07-29-2017, 01:21 AM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 32A
State: Florida
Posts: 1,873
THOR #2829
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For those in the north with basements and dehumidifiers - catch a tankful of water from that... An seemingly endless supply of distilled water if you have a normally damp basement.
Now in FL - no more basement - will be buying it for the first time... lol
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Greg
Not yet retired...
Florida (Michigan transplant)
2014 Hurricane 32A
2000 Infinity (previous)
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07-29-2017, 02:18 AM
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#14
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Senior Member
Brand: Still Looking
Model: Travato
State: Florida
Posts: 2,475
THOR #1765
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Quote:
Originally Posted by gmc
For those in the north with basements and dehumidifiers - catch a tankful of water from that... An seemingly endless supply of distilled water if you have a normally damp basement.
Now in FL - no more basement - will be buying it for the first time... lol
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In Florida you get it from your A/C which runs continually.
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