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BFL13's avatar
BFL13
Explorer II
Jun 04, 2020

How Can You Tell if an AGM is Really "Deep Cycle"?

We know about marine/RV batts being not so good at that compared with "real" deep- cycle batts like T-105 6v or T-1275 12v batts. I am suspicious that AGM "deep cycle" batts might be more like mari...
pianotuna's avatar
pianotuna
Nomad III
Jun 04, 2020
MEXICOWANDERER wrote:




The retail car jar market is cutthroat.145 pound 8-D tar top batteries used to have 900 CCA. Now 1600 CCA is the rule. Can you figure out the significance?,


Hi Mex,

I'd guess thinner plates, and "hotter" acid (increased PH), leading to shorter life with greater corrosion.

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