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CowtownCamper
PostPosted: Wed Dec 26, 2018 5:18 pm 
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Joined: Mon Oct 19, 2015 3:55 pm
Posts: 13
Location: Fort Worth, TX
I received two 12v AGM batteries as Christmas gifts. Can I safely use them without changing the shore power converter in my 2002 BF26RSB?
Will the charger be too strong on the AGM batteries?
Thanks!
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perleys
PostPosted: Wed Dec 26, 2018 6:33 pm 
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Joined: Wed Aug 05, 2015 3:45 pm
Posts: 75
Location: Columbia, MO
Is an AGM battery a lithium battery?
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randallrae
PostPosted: Wed Dec 26, 2018 8:59 pm 
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Joined: Wed May 22, 2013 7:30 pm
Posts: 366
Location: North Las Vegas, NV & Glenwood, IA
Most new smart chargers are suitable for AGM's. If your coach has not had it's original converter replaced then you should replace it before installing the AGM's.

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2012 25' rb
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CowtownCamper
PostPosted: Wed Dec 26, 2018 9:27 pm 
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Posts: 13
Location: Fort Worth, TX
My coach has the original converter. I see 30 and 60 amp replacements that appear to replace the entire power center. Which size converter is recommended for the upgrade?
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CowtownCamper
PostPosted: Wed Dec 26, 2018 9:29 pm 
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Location: Fort Worth, TX
My error. Units are 55 amp and 65 amp.
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randallrae
PostPosted: Wed Dec 26, 2018 9:52 pm 
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Joined: Wed May 22, 2013 7:30 pm
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Location: North Las Vegas, NV & Glenwood, IA
You can search this site for information on Progressive Dynamics converters and how to install them.

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whemme
PostPosted: Wed Dec 26, 2018 9:52 pm 
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Joined: Mon Aug 15, 2005 8:05 pm
Posts: 2022
Location: Spencer, IA
Recommend replacing your existing single stage charger/converter with the Progressive Dynamics PD4655V unit as recommended in the Coach Modifications section on this forum. If you order the unit from BestConverter.com, Randy at that company can set it up properly for AGM batteries.

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Bill Hemme - Spencer, Iowa
E-mail: whemme@earthlink.net
2002 Born Free (Ford E-450 V10) 26' RSB
2016 VW Golf GTI - toad
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tomzleapin
PostPosted: Thu Dec 27, 2018 6:47 am 
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Joined: Sun Jun 20, 2010 9:15 am
Posts: 431
Location: New Hope, MN
perleys wrote:
Is an AGM battery a lithium battery?
AGM is not lithium. It is a lead-acid battery. AGM stands for Absorbed Glass Mat. It is a sealed battery and requires no maintenance. It can be installed in any position except upside down.

The charging profile is slightly different for AGM vs. standard flooded cell. It would be best to replace your converter with a 3 stage one. As Bill mentioned, have it set up for AGM.

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Tom
2005 24' RB
Towing 1978 VW Bug convertible
New Hope, MN
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CowtownCamper
PostPosted: Thu Dec 27, 2018 1:42 pm 
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Joined: Mon Oct 19, 2015 3:55 pm
Posts: 13
Location: Fort Worth, TX
Thank you! I have ordered the suggested converter and will update this post after it is installed.
Thanks for the quick and complete answer to my questions.
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CowtownCamper
PostPosted: Mon Jan 07, 2019 1:56 pm 
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Joined: Mon Oct 19, 2015 3:55 pm
Posts: 13
Location: Fort Worth, TX
The replacement of the original single stage converter with a three stage unit went well.
I ordered the replacement unit as suggested and it arrived as promised in two days.
Removal and replacement of the original unit was easier than I expected but still took about 6 hours.
Thank you for your help in this important upgrade.
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