I have a single
VMAX SLR-125 battery. If I remember correctly when I bought it, the price was more attractive on the SLR (solar) group 31 battery vs the MR (marine/rv) group 31 battery. The SLR group 31 also weighs more and has a few more amp-hours than the MR battery.
I’d have trouble shoehorning the PD9280 in to the available space. That was one huge advantage of the PD4645. It replaced the power section of the Magnatek perfectly. I’d have to relocate the converter-charger if I wanted to use one that was any larger in any dimension.
:):)
