I did a "FIND" on replacement batteries which left me more confused than when I started. The general concensus seems to be Optima - but which one? I wanted dual (quad) posts, but the one with those posts may not have sufficient CCVs. The 31 has 900CCV, but only single posts. And I can't find the difference between the D31T and the D31A. AAAARRRGGGHHHHHHHHH! What are you guys using, or what would you LIKE to be using, and why? I now have many lights
and will be adding an electric winch soon.....