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Old 02-08-2013, 09:14 AM   #15
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may I ask what batteries you are using? thanks
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Old 02-08-2013, 09:51 AM   #16
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Originally Posted by FC7039 View Post
A failure of one of two 12v batteries and you are still in business. One of two 6v, not so.
Chances are the failed battery will drag the good one down, too. Remember, they are wired in parallel. With either configuration, you're in deep yogurt if one fails.
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Old 02-08-2013, 10:26 AM   #17
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Oops, ran out of edit time. With a 12 volt parallel system, you can disconnect the bad battery, recharge the good one and be back in business.

To do that, disconnect the ground to the trailer so you don't weld a wrench to the battery box. Disconnect the jumpers between the batteries. Reconnect the good battery, hot lead first, then ground, recharge. It's important to not have a path to ground when working on the positive terminals.
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Old 02-08-2013, 10:32 AM   #18
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Originally Posted by dkrukosky View Post
may I ask what batteries you are using? thanks
I don't know if this question was directed at someone or everyone.
However, I use use two 12V Life line glass mat batteries that came with the trailer when new. It came with the glass mat batteries, because it has the solar package.

Ken
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Old 02-08-2013, 11:05 AM   #19
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Trojan GC Batteries

I had two Trojan T105 batteries that lasted for nearly 10 years in 3 different sailboats (I kept the batteries when I sold each boat). I always kept them charged with a smart charger and water level maintenance was a regular monthly chore. A nice thing about them was that they would still deliver a lot of power after the voltage dropped below 12 volts and there are many accessories which will still operate in the 10-12v range.

After they finally bit the rotten enchilada I discovered that Trojan made T125's which provided more storage capacity in the same size case and I bought a pair of them. If you look at the Trojan website you'll discover that they make floor polisher batteries which have even greater capacity in reasonable size cases.

After some years I came to realize that you could roughly judge the capacity of batteries by their weight - more weight equals more plate material and more capacity. Golf cart batteries are made so that they're internally rugged and I never had any mechanical related failures after many hours of pounding on the ocean.
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