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Thread: AGM Battery Upgrade

  1. #11
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    What does 31 AGMs stand for? Are 31's the same as 12 Volt?

  2. #12
    Senior Member Grandesigner's Avatar
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    Group size 31 is how big and heavy the battery is. Yes, 12v
    Dan and Rita
    2021 Reflection 150 260RD, built June 2020, w/400W solar + 2 size 31 AGMs added
    Y2K F250 SuperCab PSD 4x4 Auto Shortbed w/slider (never used it)

  3. #13
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    Thank you so much.

  4. #14
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    AGM Battery recommendations

    Quote Originally Posted by Grandesigner View Post
    Group size 31 is how big and heavy the battery is. Yes, 12v
    Any recommendations on a AGM 12 volt? There seems to be alot of manufactures.

  5. #15
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    Would there be any down sides to buy one really big AGM battery like the Renogy 12V 200AH Rechargeable Deep Cycle Hybrid Gel Battery instead of 2 separate AGM batteries? Its basically 2 batteries serviced with only one positive and one negative post.
    Click image for larger version. 

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  6. #16
    Senior Member Grandesigner's Avatar
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    Just the cost. I got mine at sams club for about $400. How much is the renogy? I'm not even sure if that is an AGM...
    Dan and Rita
    2021 Reflection 150 260RD, built June 2020, w/400W solar + 2 size 31 AGMs added
    Y2K F250 SuperCab PSD 4x4 Auto Shortbed w/slider (never used it)

  7. #17
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    Manufactured with gel suspended electrolyte and advanced valve regulated technology, Renogy Deep Cycle Hybrid GEL Batteries save you from acid leakage and frequent maintenance.
    Corrosion resistant grids enable a design life of up to 12 years in standby applications and more than 750 charge/discharge cycles at 50% DOD in cyclic applications
    Made of high purity materials, Renogy Deep Cycle Hybrid GEL Batteries reduce the monthly self-discharge rate below 3% at 77℉ (25℃), which is 5 times lower than their flooded counterparts
    Proprietary plate composition and patented gel electrolyte ensures excellent recovery capability after excessive deep discharge
    : 3-year material Cost $449.00

  8. #18
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    Your right its NOT a AGM. The Renogy Deep Cycle AGM Battery 12 Volt 200Ah for RV, Solar, Marine, and Off-grid Applications sells for $358 on Amazon. So now I guess the question would be, which is better for RV use (or maybe they as the same) Renogy Deep Cycle Hybrid GEL or the Renogy Deep Cycle AGM Battery? Man this really gets confusing. Thanks to everyone for their help.

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