Batteries Lead Acid vs AGM
Since we are new to RVing I have questions for which I appreciate all comments. Would like opinions on using AGMs or lead acid for House Batteries bearing in mind that AGM's like to be charged at...
Forum Discussion
pianotuna wrote:
Hi Harold,
I'll regret this (probably).
How do you desulphate an AGM format jar without causing gassing of the (limited) electrolyte.
Hi PT;
I am not convinced that gassing voltages are a requirement for a desulfation recovery procedure with AGM. By gassing, I mean overvolting to the extent that the valve are compromised.
Lifeline allows 15.5V for their conditioning procedure. I don't believe they would state that if it would compromise the valves.
Overvolting to that extent would be just as wrong as letting the plates of wets go dry.
wa8yxm wrote:
Another common AGM myth I hear is "Can be recharged faster"...
Would it be possible to charge a wet at 15.6V and unlimited Amps if the battery temp is kept under 125F? Apparently, the Optima rapid charge procedure does not compromise the valves.
1. A constant Voltage charger with temp comp would manage the current to do this.
2. It is a fact that AGM has lower internal resistance. This means that less charge current is wasted to heating the battery as opposed to a wet. On paper, The AGM charges faster because more current goes to charging of the AGM.
3. Less energy will be used to charge the AGM because of the lower internal resistance. It is cheaper to charge the AGM.
HTH;
John
