FWIW, I finally bought a new battery for my 84' Westy.  My old battery was a measly 650 CCA from Wal-Mart and was purchased in July of 2000.  Rather surprising considering how many times I killed the battery leaving the lights on, using equipment while camping etc.  I figure it owes it's long life to it's location - inside the van, under the passenger seat.  Nothing astounding, but thought I'd mention it.
Someday I'm going to put in an auxiliary battery, but I've been saying that for years...
David Wilhite
84' West