They are all lead acid batts, the chemistry is the same.
And did you and several others even read his post where he said it was an almost new "marine" battery ? READ HIS QUESTION !!
NinerBikes wrote:
Mixing different battery construction types, golf cart batteries, with a car battery, with different chemistries and amp hours per battery, is a lot like pairing a Honda Eu2000i to a Honda Eu1000i, to run something with a heavy amp load, like a 13.5k AC.
It can be done, but no one recommends it, and you probably shouldn't do it.
