I have a 93 V3000 wagon but model may not make much difference to this particular question. A couple of times I have had a flat battery and had to jump start. When jumping it starts fine, I don't reckon it's the starter...I put a meter on it just now.

13.30 with no load at idle
13.02 with lights on
12.74 with lights and A/C

Anyone want to take a stab at what this puppy needs to get better?

 

I stopped at a garage yesterday and asked them to test the battery. They put their battery test thingy on it, which I guess is different/better than a plain old electrical meter. Anyway they said the battery was bad or had a bad cell. I replaced it. We will see ...if it still dies on me you will hear about it.