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Old 08-19-2014, 04:09 PM   #1
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Best replacement battery

The expensive Sears AGM battery we bought a few years ago is no longer holding a charge. Just tested this by slow charging the battery for several days (2 amp charge rate) and then leaving the battery completely disconnected. In less than a week, it measures less than 10 volts.

Of course, Sears put it on their tester a while back and told me it was good. I'll continue the argument with them tomorrow.

Meanwhile, can anyone recommend a good replacement battery for a 1966 Safari?

I know there's a lot of opinions on the Forums, but there's also a world of experience, and I'd like to have the benefit of that.

Thanks everyone.
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Old 08-19-2014, 05:32 PM   #2
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I'll bet you are beer that your problem is not an inferior brand battery, but a defective charger. On an older trailer, your charger is probably a Univolt in newer trailers the brand is Paralax. At any rate it is a single stage charger which will fry any battery in a hurry, particularly an agm which hates to be overcharged. I learned the hard way with two sets of Optima Blue Tops lasting only a year.
Your battery is toast but before you replace it, upgrade your charger converter to a three stage one. Go online at bestconverter.com. They have a plug and play converter for your trailer.
As for the batteries, I am on my third year with drowned cell lead acid ones from Interstate. They are close to new performance. I boondock a lot and quickly notice weak batteries. They are a third the price of the AGM batteries. Batteries are pretty much the same. A maintenance free battery from Wallmart or Sears with the same capacity would work as well.
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Old 08-19-2014, 06:04 PM   #3
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I buy mine at Wal-Mart. Going on the 5th year with it.
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Old 08-19-2014, 06:34 PM   #4
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Thanks for the advice. One vote for Interstate and one WalMart. Twinkie, could you tell me exactly which battery from WalMart?

Handn, the Univolt was gone before I bought this battery. 3-stage charger is the only way to go. Bestconverter.com sold it to me. Your advice is good.

Anyone else have a favorite battery you think I should consider?
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Old 08-19-2014, 07:44 PM   #5
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I buy batteries on the following basis:
  • Is it the right size?
  • Who has the best price in dollars per month of warranty?

I ended up with Costco deep cycle marine batteries. When I retire and will be using it more, I'll probably change over to AGMs.
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Old 08-19-2014, 07:44 PM   #6
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Not the low bidder - Lifeline batteries

Lifeline Batteries - Marine & RV Deep Cycle Batteries

We have four GPL-6CT batteries in our solar system.
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Old 08-19-2014, 07:57 PM   #7
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Quote:
Originally Posted by mimiandrews View Post
The expensive Sears AGM battery we bought a few years ago is no longer holding a charge. Just tested this by slow charging the battery for several days (2 amp charge rate) and then leaving the battery completely disconnected. In less than a week, it measures less than 10 volts.

Of course, Sears put it on their tester a while back and told me it was good. I'll continue the argument with them tomorrow.

Meanwhile, can anyone recommend a good replacement battery for a 1966 Safari?

I know there's a lot of opinions on the Forums, but there's also a world of experience, and I'd like to have the benefit of that.

Thanks everyone.
Interstate is very good
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Old 08-19-2014, 08:01 PM   #8
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I bought marine RV deep cycle dry cell batteries three years ago and they seem to be doing well. I keep our trailer plugged in year around and leave a LED night light plugged in to make sure that there is a small drain on them also.
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Old 08-19-2014, 08:49 PM   #9
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Originally Posted by msmcv51 View Post
I bought marine RV deep cycle dry cell batteries three years ago and they seem to be doing well. I keep our trailer plugged in year around and leave a LED night light plugged in to make sure that there is a small drain on them also.
Why would you want a 'small drain' on your batteries? What purpose does it serve?
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Old 08-19-2014, 09:02 PM   #10
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Normally I would suggest TROJAN T-105 Golf Cart Batteries. They are 6 Volts and you add them in Series to produce 12 Volts DC.
More is needed here to suggest the "best Batteries". Where are they located on the trailer? Do you have SOLAR? Does it Freeze where you are? Do you want to spend time maintaining them?
All of this helps make a decision on Flooded Lead Acid, Vented or Sealed or even AGM.
PS AGM has Charging Requirements slightly different than Flooded Lead Acid (Sealed or Vented)
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Old 08-19-2014, 09:31 PM   #11
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I have a 66 Tradewind, so maybe the space available is the same for you as it is for me. I removed the old rusty shelf next to the toilet and fabricated a 3/4" plywood shelf. There is room for two golf cart batteries. I bought my batteries at Sam's Club 3 years ago and they have worked out very well. I believe they were about $70 each. I boondock a lot. Typically I camp for about 4 days and the battery voltage starts at about 12.9v and drops to only 12.7v after 4 days of boondocking. My power needs are small with LED lights, the water pump, a little TV, a little fan as needed and charging the cell phone. My fridge does not use any battery power.

I originally planned to add two more batteries because I have the room and also thought about adding solar, but I just don't need either right now.

If my batteries died tomorrow, I would buy two more GC batteries from Sam's again.

Dan
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Old 08-19-2014, 09:37 PM   #12
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We, and our neighbors, buy our marine deep cycles from Costco. They are "warrantied" for 60 months. At 61 months, they die, so we buy another.
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Old 08-19-2014, 11:00 PM   #13
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Don't think I have room for two 6v batteries. The shelf in the Safari was designed for one battery--group 31 is about as big as will fit. I have reinforced the battery shelf and added a plastic battery box, but space is at a premium back there. Available space is approx. 14 inches long and 7 inches wide.

I'd really love to find two smaller batteries that would fit in that space so I could lift them by myself--one at a time. (Present battery is 75 lbs.) Two sixes wired in series or two twelves wired in parallel--doesn't matter.

No solar installed on the trailer.

It does freeze here, but doesn't stay that way for more than a day or so at a time.

I'm willing to maintain batteries, and I do know how. Just got bit with a very expensive battery in trying to avoid that chore, so I may be willing to go back to regular maintenance.

Y'all are being really helpful. Keep the ideas coming.
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Old 08-20-2014, 01:37 AM   #14
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I will just say that if you want a really good battery, get a Lifeline. Arguably the best AGM made. There are tons of threads on the subject. I put 4 6V Lifelines in our 64 Safari. We booney camp a lot.
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