AGM batteries require approximately the same charging parameters as lead acid batteries. Gel cell batteries require a lower charging voltage. Without knowing more about your solar system I can’t comment on why your new AGM batteries are not receiving a full charge.
2007 Dodge 3500 Dually 4x4
Cummins 5.9, 6sp, PAC
brake, Big Wig, Timbrens
2000 Lance 1130
2004 Jeep Rubicon
