It's been cold lately--at least "cold" by California central coast standards--and the temps in the low 30s seem to have killed my battery. I went to start the truck up today and just a slow crank like the battery was low. AAA sent out a TT promptly and while I waited I cleaned the battery posts and cable connections. The TT driver was unable to jumpstart my truck and it seemed that there was less and less juice with each attempt. Now I have no idea just how weak my batts were but I have never heard of a battery being too weak to jump. Fortunately I was able to get a ride to Sears and grabbed some new DieHard Golds. I am curious as to what else I could have done to get on the road again if purchasing new batteries was not an option. What could the TT driver have done differently that might have given me the juice to start? As I understand it the passenger battery is the preferred one to hook to the cables but this is my first experience with a dead diesel battery so I don't know much here. Any tips on handling a diesel jumpstart would be appreciated.