New Coach Batteries
It is about time to change batteries in the coach. I have the standard two 12-volt system, which I think I will stay with. But I am considering going to AGM batteries. When we camp, we usually ha...
Forum Discussion
No. AGMs need to be fully recharged frequently. That means you need to get them to where amps have tapered to 0.5a/100AH and hold the voltage at about 14.4 till that happens before dropping the voltage to the float voltage.
You must have an ammeter to tell you when you are there for amps, and a charger that can hold that voltage all the time it takes. I use my Trimetric for the ammeter job, and have an adjustable voltage converter (PowerMax LK type) to do the voltage part for my AGMs.
Only reason to have AGMs is if you need to mount them inside the RV where the fumes from a Wet battery cannot be allowed.
You must have an ammeter to tell you when you are there for amps, and a charger that can hold that voltage all the time it takes. I use my Trimetric for the ammeter job, and have an adjustable voltage converter (PowerMax LK type) to do the voltage part for my AGMs.
Only reason to have AGMs is if you need to mount them inside the RV where the fumes from a Wet battery cannot be allowed.
