Not a MM owner, but AGM’s obvious advantage is their no maintenance feature. They are powerful, reliable, reasonably long lasting when treated well and don’t require constant monitoring for fluid levels. Plus, they are less prone to sulfating, able to charge faster and lose less power when just resting.
They can also be drawn down a farther without damage, but because of their higher cost that’s not something I personally count on with my AGMs. I have 4-Group 31 AGMs and want them to last... because when they need replaced I plan to replace them with Lithium batteries.
Quote:
Originally Posted by RDP
I am not interested in postings about 6 volt batteries or Lithium-ion batteries.
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And, for RV deep cycles they are Lithium Iron Phosphate batteries not Lithium-ion. It’s a different chemistry.