What size battery?

[smibarines]

I need to buy a new car battery. I looked them up on Consumer Report's website and they list the sizes as Group 65, 34/78 & 78, 24/24F, 35, and 75. All the normal sizes. However, when I went to Autozone.com to price the battery - it says I need size group 51R.

Anyone know what size a 51R equates to? Or which is closest in size to a 51R?

 

[MrX]

Best thing to do is go to the auto parts store, and take a look at them. Just remember the "R" in 51 R means the + and - terminals are reversed.

 

[smibarines]

Best thing to do is go to the auto parts store, and take a look at them. Just remember the "R" in 51 R means the + and - terminals are reversed.

Well, the thing is - I want to buy the top rated battery listed by CR but different brands excel in different sizes so for instance, a Group 65 battery - the Diehard is the best but for a Group 75 they ranked in 6th.

I really didn't want to have to bother going to the store but I guess I will.