'98 Sport Nautique Battery Size

If you click on the link below it's a battery size chart and you can compare what you have to other numbers

I'd start by seeing if a Group 65 starting battery will fit in your battery box using the dimensions in the chart.

It fits in lots of CC battery boxes, maybe it'll fit in yours too    

link

A member here suggested Walmart Everstart Maxx batteries a few years back (maybe longer at this point) and I have them in my '98 and another boat. Have been great so far. I don't remember the size offhand, will see if I have it and post later. Inexpensive, good ca and reserve specs.

63 Skier wrote: A member here suggested Walmart Everstart Maxx batteries a few years back (maybe longer at this point) and I have them in my '98 and another boat. Have been great so far. I don't remember the size offhand, will see if I have it and post later. Inexpensive, good ca and reserve specs.

I'm pretty sure I bought a 65N for mine, fit the box with no problem.

8122pbrainard wrote: BDPsix wrote: Was thinking about installing a yellow top Optimum, . Brent, What are you intending to use the yellow top for? Sound equipment? Hopefully not starting the engine since the yellow is a deep cycle battery.

This is from the Optimum site:
The YELLOWTOP high-performance AGM battery is one of the few true dual-purpose automotive batteries available. With premium cranking power and impressive cycling

Sound like a good option for starting and playing the radio while hanging out..

Just in case anybody searches this subject in the future, there is a label under the battery box lid That I didn’t see. The label says to use A group 48 or 41 battery.

Sorry I was going to check mine but other projects got in the way. I will check today.

BDPsix wrote: 8122pbrainard wrote: BDPsix wrote: Was thinking about installing a yellow top Optimum, . Brent, What are you intending to use the yellow top for? Sound equipment? Hopefully not starting the engine since the yellow is a deep cycle battery. This is from the Optimum site: The YELLOWTOP high-performance AGM battery is one of the few true dual-purpose automotive batteries available. With premium cranking power and impressive cycling Sound like a good option for starting and playing the radio while hanging out..

And this is also from the Optima website:
"REDTOP® batteries
The REDTOP high-performance AGM battery is the ultimate starting battery and is designed to deliver a strong burst of ignition power for a reliable start-up every time. It has high-power delivery and extreme resistance to the most common causes of battery failure."

The yellow is a compromise between starting and deep. If you have a lot of auxiliary equipment drawing power when the engine isn't running, then yes on the yellow.

8122pbrainard wrote: The yellow is a compromise between starting and deep. If you have a lot of auxiliary equipment drawing power when the engine isn't running, then yes on the yellow.

I still wouldn't do it. If you plan to draw that much, engine off, for that long, you want dual batteries with an isolation switch. Never stranded that way, and don't have to worry about how long you'd been playing tunes at the sandbar.

I have nothing against Optima's, just don't use them myself, I feel they are, as you say, way overpriced. I do admire them for developing a reputation and following that allows them to price at the top of the market.