Rainer,

Your posts on what "DOESN'T WORK" have been very interesting.

Would you have suggestions as to what "DOES WORK"?

 Let's design a efficient system with the the following Objectives;

- Two "true" sealed non-out gassing deep cycle batteries
- System must provide a minimum of 110 ah in total (more would be
better)
- Batteries must fit into the Vanagon battery boxes with minimum
modifications
- System must be able to be recharged with stock Vanagon 90 amp
alternator within 4 hrs of driving
- Batteries able to handle daily discharge to a 11.5 volt level
- Batteries are both new and identical as to charging characteristics
- All components must be readily available for a reasonable cost
- Selector switch that allows one to choice which batteries are on line

all roads lead to adventure,

Larry Chase
Email: RoadGuy@RoadHaus.com
Web:  <http://www.roadhaus.com/> www.RoadHaus.com
Cell: 480 620 8966
What: North American Road Trip
How: RoadHaus - 1990 White VW Westfalia Syncro
Today: Wyoming & the Dakota's