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Unread 12-09-2012, 09:18 PM   #1
Not Yet Wild
Join Date: Oct 2012
Location: Hernando
Posts: 54
Default Agm batteries

My neighbor gained access to mr12-300 agm batteries for $25 each. He has a 36 volt cart with 6@6 volts. The agm batts are the same size so he removed the 6 volts and put the 6@12 volts in. He wired it as 2 36 volt sets and paralleled the sets as the supply. He swears it performs as good as new.

My questions are
1. Has anyone else done this
2. What problems might occur
3. Are those agm batteries as good as or comparable to a traditional gc batt.

4. My cart is a 48 volt with 6@8 volt. If I put 4 of them in it what should I expect performance wise?
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Unread 12-10-2012, 08:16 AM   #2
Gone Wild
Join Date: Nov 2011
Posts: 165
Default Re: Agm batteries

This is the Cadillac of battery info sites.

AGMs are great batteries. Better (not necessarily more cost effective though) than gel or flooded cell in most applications.

...however, there is some question about equalizing (conditioning) flooded cell vs AGM. You can get conflicting information from different sources. This is what I think I know. AGMs should be conditioned 3-4 times per year depending upon the situation. Flooded cell more frequently. Since the Club Car computer actually controls the charger I am not sure if you are able to program the cart to use different charging profiles for flooded, gel or AGM batteries. I would feel comfortable using the same charger/charging profile for flooded or AGM batteries, but definitely not gel.

Regarding the series/parallel configs. The above site provides a lot of info. As long as you use the same voltage/capacity/age and technology of cells in the bank there is no problem using the series/parallel connections. The parallel connection will simply give your battery pack the ability to provide the required voltage for about twice the time.
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Unread 12-10-2012, 08:19 AM   #3
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Join Date: Dec 2007
Location: Southern California
Posts: 59,527
Default Re: Agm batteries

I believe these batteries charge at a lower rate and to a lower end voltage than open wet cell. This is the case if they are ventless. I'm not sure as to what you got.
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Unread 12-10-2012, 07:48 PM   #4
Gone Wild
Join Date: Nov 2011
Posts: 165
Default Re: Agm batteries

I've attached a charger troubleshooting guide from Lester.

Due to the lower internal resistance of AGM batteries they can actually be charged faster than flooded cell batteries.
Attached Files
File Type: pdf Lester.pdf (62.1 KB, 0 views)
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