The difference between Advanced Glass Matting (AGM) and Enhanced Flooded Battery (EFB), where are they used, and can they be swapped?

Advanced Glass Matting (AGM) batteries work by absorbing the acid and holding it against the metal plates better. Enhanced Flooded Batteries (EFB) work the same as a normal lead-acid battery, but with carbon to hold the charge better. EFB batteries can be used in in some cases instead of AGM, it depends on the electrical load. Always check the manufacturers handbook before charging your battery.