Old 10-07-2020, 10:25 AM
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Originally Posted by merlin2375 View Post
Thanks for the replies. Good points.

1) I will have to change out the batt trays to go from 24 to 27 group size, not a huge problem but would have to do so.
2) When one has two batteries, is there anything that says the two batteries have to be exactly the same?
3) Seems like most AGM batts are dual purpose not starting vs deep cycle? Am I missing something?
No need for them to be exactly the same. Personally I would want the same chemistry (all AGM or all flooded) simply because charge profiles are largely the same within a given type. This insures that the voltage/charge regulation system can operate at its best.