I just recently replaced my 28 series battery with a Duracell AGM series 31
RV/MARINE battery. It is almost 1/2 again the size of the 28 Series battery.
I had to replace the the battery box also for the original box was too small.
The battery came from Sam's and the large battery box came from PPL motorhome RV. I have also recently replaced the battery converter/charger with a four stage converter/charger.
In the replacement of the battery box, I had to relocate the large breather hole in the bottom of the battery box so I could place the box in a better position in the 8285 WS Rockwood fifth wheel. The large battery box now sits
fore and aft instead of cross-ways of the storage compartment. This allows for much more storage area.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS