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Old 12-31-2015, 08:30 AM   #29
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Back to the original subject, two 6 volt vs. three 12 volt, I bought 3 Energizer Group 29 RV/Marine batteries at Sam's Club yesterday. I will be replacing 3 of the same that are about 3 years old. The batteries are rated at 125 amps, so that is a total of 375 amps. I have 605 watts of solar. We probably use 70 to 100 aH per day. I had planned on moving the chassis battery and installing four GC-2 six volt batteries. I took the easy way out, but may still move the chassis battery and add one more Group 29 from Sam's Club.

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Old 12-31-2015, 07:54 PM   #30
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Originally Posted by Scottybdivin View Post
I recently went through the dilemma of choosing wet vs AGM. I was also not able to find any technical information about the warehouse GC-2's. However, I did find the spec sheets on both Trojan T-105's and Lifeline AGM's. All things being equal, the T-105's have a higher charge cycle rating than do the Lifelines. My battery compartment is pretty much open-aired with a louvered compartment door, so ventilation is not an issue. It really boils down to how much you are willing to pay for the convenience of not having to add water or worry about corrosion. I bought 8 T-105's for $1189 and the quote for Lifeline AGM's was $2392. The other way I look at it is, having to check the water once a month will force me to inspect all the cables and connections. If I had AGM's, maybe I would forget about it.
That price comparison was helpful and valid, IF you do not forget the T-105 watering need. If you do and damage the plates, then the price to replace ruined batteries would even the scale. Human nature being what it is, I went with AGM.

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Old 01-01-2016, 08:36 AM   #31
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Much of the AGM vs flooded cell discussion here is contrary to what I've researched and read on several solar blogs.

Do some research and find your truth on the subject. Handy Bobs blog is extremely informative and I've found it to be quite accurate, especially his discussions on batteries.


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