AGM batteries - are they better?
Upgrade to an AGM battery. You can safely mount them inside, and upside down, and they will out-perform any flooded battery you ever owned! Here's a quote from another thread. It's typical of other...
Forum Discussion
I run 3 agm's - ~255 ah with a 150 amp inverter/charger. It charges 150-160 amps at the start of Bulk, dropping to 40-60 amps for Absorption for ~30 minutes, before dropping to float. Absorption to <10 amps in float is less then an hour. The biggest bang is the 150 amps in bulk, with your 80 amp charger, I doubt you will see anything but a lighter wallet. In your case I would out a solar panel or two on the roof for the end of the Absorption stage and call it good.
I run them on my rig because the inverter is 3kw, with a 6kw surge - That would talk a lot more then 255 AH of wet cells to support. My agm's are rated for 5C charge - with a big enough power source I could shove over 1200 amps into the batteries (for a few minutes until they taper). Not really useful, but at 150 amps I am not even starting to challenge them.
I run them on my rig because the inverter is 3kw, with a 6kw surge - That would talk a lot more then 255 AH of wet cells to support. My agm's are rated for 5C charge - with a big enough power source I could shove over 1200 amps into the batteries (for a few minutes until they taper). Not really useful, but at 150 amps I am not even starting to challenge them.
