Karen,

Its kind of a apples vs. oranges answer.

Depends on what you want to do with it.

If the van is parked unused for long periods of time .. A small trickle
charge (say 1 to 1.5 watts) would be fine.

If you are looking to recharge the battery while camping, then the short
answer is  .... The more watts the better.

The long answer is "one has to calculated their electrical consumption
and do some simple math to se how big a panel would be needed.

Hope that helps.

"Man is the tool of his dreams."
  - William Least Heat-Moon

Larry Chase
Email: RoadGuy@RoadHaus.com
Web: www.RoadHaus.com
Cell: 480 620 8966
What: North American Road Trip
How: RoadHaus - 1990 White VW Westfalia Syncro
Today: Bellingham, WA

- - -

Date:    Sat, 12 Jul 2003 16:27:03 +0000
From:    karen davis <yosemite333@HOTMAIL.COM>
Subject: Wattage for Solar Battery Charge

What type of wattage should one get on these solar battery trickle
chargers...is it 1.5 watts?  Just didn't know if more or less is better.