Forum Discussion
BFL13
Jun 13, 2019Explorer II
No idea what the 4D or 8D reason is, but FWIW, I have found my 100AH 27 AGMs (deep cycle type) to be tougher for RV use where I am hard on batteries doing 50-80s etc. The big 8D seems more delicate somehow, now it has been a year with it. I keep close tabs on them and have been getting a good feel for how they act.
I am not sure just how much the 8D is really for "cycle use" as opposed to "standby use" in real life, although it has specs for both jobs. The 27s have specs for both uses too, but seem to do better at deep cycling and "keep on ticking".
IMO, where there is a choice, I would just get more 100ah 27s and not a couple of the really big AGMs because of this. (But none of my AGMs is a Lifeline, which is supposed to be a tougher built battery than others that are not mil-spec)
I am not sure just how much the 8D is really for "cycle use" as opposed to "standby use" in real life, although it has specs for both jobs. The 27s have specs for both uses too, but seem to do better at deep cycling and "keep on ticking".
IMO, where there is a choice, I would just get more 100ah 27s and not a couple of the really big AGMs because of this. (But none of my AGMs is a Lifeline, which is supposed to be a tougher built battery than others that are not mil-spec)
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