BFL13 wrote:
I don't understand where all this talk of AGMs charging faster comes from.
It's rooted in a misunderstanding of the AGM battery. You would not belive how many people assume AGM automatically means true "Deep Cycle". So a person buying one of those dual purpose "marine/rv" battery that happens to be AGM mistakenly assumes it's an actual true deep cycle battery. Many do not realize that an AGM can be a regular starting battery, a dual purpose battery or a deep cycle battery. Just like a Flooded Lead Acid can also come in all three varieties. And, we can to forget that there are some who got taken in by slick adverting where they belive their AGM is more like a lithium ion needing special charging and all sorts of stuff when reality is it's just a cousin of the flooded lead acid battery.
Sure there are some charging differences and speeds, but in the real world, that difference is only meaningful when comparing a true deep cycle AGM to a regular flooded lead acid car battery. Otherwise, the difference between a marine/rv AGM and a marine/rv flooded lead acid isn't even worth the energy to compute any minor difference.
