This is because batteries made to last a long time will have more active materials. This table was made from data sheets from various manufacturers. BCI Group Car battery weight in lbs Car battery weight in kg Typical AH Capacity Typical CCA 1 33.5 15 100 650 2 36.5 17 60 780 3EE 43...
Group 24, 27 & 31 & most *4D & *8D flooded 12V "Marine Batteries" are NOT really a deep-cycle battery when compared to a battery specifically designed from the ground up as a "deep cycle" battery. Simple stuff. There are 6V and 12V batteries that are much better suited to cycling d...