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03-06-2012, 11:04 PM
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#1
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Member
Name: Noel
Trailer: 1979 13' Boler
British Columbia
Posts: 79
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Used Batteries
Any thoughts on buying used batteries? I have an opportunity to buy 2 used Trojan 6V AGM batteries (200 AH), that I am told are only a year old, for $140 for the pair.
Is there any way to reliably tell how old they are?
Is it a good idea to buy used batteries at all?
Thanks,
Noel
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03-06-2012, 11:37 PM
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#2
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Senior Member
Trailer: Scamp 19 ft 5th Wheel
Posts: 1,861
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There is a molded in mfg date stamp on most batteries. I found the code on the internet, search battery date code. Around here you can take a battery to any chain auto parts store and they will do a load test on the battery for free.
Eddie
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03-07-2012, 01:00 AM
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#3
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Senior Member
Name: Daniel A.
Trailer: Bigfoot 17.0 1991 dlx
British Columbia
Posts: 741
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I'd buy them if they were close by. One year old they have another five at least good batteries.
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03-07-2012, 05:25 AM
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#4
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Senior Member
Trailer: Trillium 2010
Posts: 5,185
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Here is how the manufacturer recommends testing there batteries. Find someone with a hydrometer.
Trojan Battery Company
Good luck and be careful, Raz
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03-07-2012, 06:44 AM
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#5
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Senior Member
Name: bob
Trailer: 1996 Casita 17 Spirit Deluxe; 1946 Modernistic teardrop
New York
Posts: 5,416
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Can't use a hydrometer on most newer batteries, load test is the best way
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03-07-2012, 07:26 AM
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#6
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Senior Member
Trailer: Trillium 2010
Posts: 5,185
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Quote:
Originally Posted by mary and bob
Can't use a hydrometer on most newer batteries, load test is the best way
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Quite correct. I missed that they are AGM batteries. Raz
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03-07-2012, 08:57 AM
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#7
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Senior Member
Trailer: 92 16 ft Scamp
Posts: 11,756
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As suggested you should be able to get up to 5 years good use out of a battery but in my experience the life of a battery and how well it holds a change will be greatly impacted by how often it was allowed to go below 50%.
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03-07-2012, 09:02 AM
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#8
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Senior Member
Name: Norm and Ginny
Trailer: Scamp 16
Florida
Posts: 7,517
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When we sold our Motorhome the 6 volt Trojan105 batteries were 14 years old and still functioning well. They had always been connected to a 3 stage Converter, we never shut the convertor off except when dry camping or driving.
__________________
Norm and Ginny
2014 Honda Odyssey
1991 Scamp 16
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03-07-2012, 10:14 AM
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#9
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Member
Name: Noel
Trailer: 1979 13' Boler
British Columbia
Posts: 79
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Thanks all.
I think I'm gonna go around and have a look at them.
Noel
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03-07-2012, 03:42 PM
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#10
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Senior Member
Name: john
Trailer: scamp 13
Michigan
Posts: 1,318
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wow,,,i have no idea what those batteries are,,,,or what any of you just said....
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03-07-2012, 04:20 PM
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#11
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Senior Member
Name: Norm and Ginny
Trailer: Scamp 16
Florida
Posts: 7,517
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Batteries
John,
The typical motorhome has 3 batteries. One battery is a traditional truck battery primarily used to start the motorhome's engine.
The other two batteries, often made by the Trojan battery company, are usually 6 volt batteries wired in series used to run the motorhome's 12 volt system. These two batteries are heavy duty, have particularly thick lead plates and can last a really long time if their taken care of.
Some motor homes will have four of these batteries for even more staying power. They are similar to golf cart batteries.
__________________
Norm and Ginny
2014 Honda Odyssey
1991 Scamp 16
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03-07-2012, 05:53 PM
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#12
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Senior Member
Trailer: Trillium 2010
Posts: 5,185
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Quote:
Originally Posted by john warren
wow,,,i have no idea what those batteries are,,,,or what any of you just said....
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The batteries Norm is referring to are flooded lead acid batteries often called golf cart batteries because one of there applications is powering golf carts day in and day out. Very heavy duty, long lived ,rugged. Trojan is the manufacturer and T105 is the model. Apparently what Noel is looking at is an AGM ( Absorbed Glass Mat) battery. A newer technology, they are similar to gel cells. Sealed, maintenance free and also long lived as well. Since Noel hasn't given a model number it is hard to know what model he is looking at but here is an example. Notice the price! Raz
AGM Batteries: Trojan 6VAGM - 6V 150Ah AGM Battery: BatteryClerk.com
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