The number 65 is contained in the model number of battery, it is not actually the AH rating of the battery. Like the hankook ***65** (please check it, i don't exactly remember the complete model number) is 48AH in real and it is also mentioned on the box of the battery, this is somewhat confusing and most shopkeepers sell it saying it is 65A battery.
A true 65AH battery may not fit on the car battery holding tray.
As said by Xulfiqar check the Right and left orientation of the battery before buying, it is normally the last letter in the model number of the battery as L or R.