AGM Batteries - Any downside?
Hi, I am going to have to replace my single 12v Battery soon, for our TT (it is leaking from the top). Doing some research, I have found a lot of good information on AGM type batteries. I see...
Forum Discussion
A good, truly cyclable battery does not need all that much maintenance. The problem seems to be battery companies do not want to take a chance manufacturing a true cyclable battery in an automobile BCI.
"Look! It's a sixty pound group 27 with 75 amp hours!"
Now who is going to buy a battery like that? Any of you brave souls want to pay a hundred twenty dollars for a 75 amp hour group 27? I thought not. The battery would have to be at least a half inch higher to afford greater acid capacity and deeper sediment chamber. I had a pallet of 90 amp hour group 27's last a week under test due to acid starvation. ABC battery was not happy about it either.
There is no "final answer". There is a decision based on compromises that you have to live with. No way in hell does a "same weight" VRB have the same 20 AH rating as a flooded battery. Absorbed glass mats occupy room that an envelope separator does not. The philosophy of how to design a battery with retail price in mind is wholly different between VRB and flooded. Look at the weight versus BCI ampere hours at any rate. Not CCA.
I am seeing conclusions arrived at here that have little in common with reality.
"Look! It's a sixty pound group 27 with 75 amp hours!"
Now who is going to buy a battery like that? Any of you brave souls want to pay a hundred twenty dollars for a 75 amp hour group 27? I thought not. The battery would have to be at least a half inch higher to afford greater acid capacity and deeper sediment chamber. I had a pallet of 90 amp hour group 27's last a week under test due to acid starvation. ABC battery was not happy about it either.
There is no "final answer". There is a decision based on compromises that you have to live with. No way in hell does a "same weight" VRB have the same 20 AH rating as a flooded battery. Absorbed glass mats occupy room that an envelope separator does not. The philosophy of how to design a battery with retail price in mind is wholly different between VRB and flooded. Look at the weight versus BCI ampere hours at any rate. Not CCA.
I am seeing conclusions arrived at here that have little in common with reality.
