Take a look at the solar panels & especially the wiring set up.
http://www.cheaprvliving.com/blog/living-truck-camper-truck-camper-sale/
I'll bet if your 80w panel had not been in the shade you would not be
thinking about a different battery set up.

Rob
vwrobb@gmail.com

At  10/15/2014 02:50 PM, J B wrote:
>Hi everyone,
>
>Our last camping trip for a while, we went to Lake Piru. Our 80W solar panel=
>  was in the shade for the whole weekend and hardly charged my 50Ah house bat=
>tery which had me looking at other options. I still want to keep it in the l=
>ocation under the drivers seat and have been reading about putting 4x22Ah ba=
>tteries in parallel for a total of 88Ah. Does anyone here have any experienc=
>e with this type of set-up??? Or other options under the drivers seat having=
>  more than 50Ah?
>
>Also feel free to check out my updated blog of Lake Piru.
>
>http://1981vwcamper.blogspot.com/
>
>Thanks - John.