That might also mean that it is a group 24 battery. The group is an
indication of the battery size, group 24, group 27, and group 29. The
bigger number the bigger battery. Since boats have lots of battery
room I tend to go for the bigger size, 27 or 29, as they generally have
more reserve amps. This is handy if you troll or sit around with
accessories on. Something to think about if you replace it.

wingspan wrote:
I bow to your superior knowledge on the topic. No, it only has 6 holes.
I was concerned when I saw "24" adjacent to the + post on the battery
and noticed the model number was 2460. That coupled with the 24v
trolling motor sent me over the edge into wild speculation. Thanks for
the comments!