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Parrothead_Mike's avatar
Parrothead_Mike
Explorer
Aug 03, 2019

New Battery Question

Today, August 3, Sam's club has a sale on Marine/RV batteries. Since my current Interstate is getting to be 3+ years old I'm considering purchasing one of the Duracell Marine/RV batteries at Sam's & keeping the Interstate currently in the camper as backup.

My Interstate hasn't been holding up well when dry camping at music festivals we attend. I do use my Honda 2000i as a backup charger, but would like a longer lasting battery plus one festival doesn't allow generators. Any background or experience with Duracell Marine/RV batteries would be much appreciated.

Two batteries under consideration:

Duracell 27MAGM Platinum w/ CCA-580 & MCA-900 price: about $160

Duracell SL34MAGM w/ CCA750 & MCA 850 price: about $120

This is for my 2015 Cedar Creek Silverback 29RE

Current Interestate - CCA-550 & MCA-690
  • BFL13's avatar
    BFL13
    Explorer II
    Aug 03, 2019
    In the OP aren't they all "starting" batteries? You want a "deep cycle" battery. At least get one with "DC" in its name even if it is a hybrid starting/deep cycle type. Look for AH rating at the 20 hr rate. Should be 90 or so. More is better.
  • MEXICOWANDERER's avatar
    MEXICOWANDERER
    Explorer
    Aug 03, 2019
    Chances are it's the charging and not the battery. Percentage like 90%.

    100% guesswork until you obtain an accurate hydrometer and observe reality vs guesswork.

    Some folks go through batteries like a 10-year-old goes through M&M's. They refuse to make an effort to diagnose an obvious argument between reality and what they think :)

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