Battery Exide or Duralast

I've been using a Duralast battery for the past 2 years with no problems...

I just got a new 47-36 battery made by Exide. The vent tube routes as Dr. Bob describes, and the clamps fit perfectly. My only issue with the new battery is that the vent caps are way at the back and may be hard to reach.

You were right in saying the battery was weak. More or less the battery was beat like a baby seal, so I replaced it with a preimum Exide unit