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Battery Authority Blog | Interstate, Car and Marine Batteries Reviews

Asking For Some Clarity On Interstate Marine Battery Prices

The ‘pricing’ of your Interstate battery products getting you down for the count? Well, more often than not, there is a reason for that. Learn some of the things that drive your Interstate marine battery prices before heading out to buy them—all right below.

Does Interstate Make AGM Grade Marine Batteries For “The Right Price(s)”?

So, does the pricing attribute directly to something as complicated as the quality of a battery and performance? —not necessarily, but it does not mean that it is a complete lie, either.

The “price” tag on a battery (marine, dual-purpose, or cranking or some other), usually is a reflection of certain performance factors:

Battery Group Sizes

A battery “group size” is typically a designation to indicate how the ‘energy currents’ in a battery act out when in a series of connections together, producing a far higher current of power in one actuation—the measurement is in voltages.
In many products of Interstate (and some other brands), you will see this designation usually by the number before the marine battery product model—as in the case of the SRM-24, SRM-27, or an SRM-29 (99 dollars to as much as 299, respectively.)
Does a larger battery group size lead to a more significant increase in ‘price’? —more often than not, that is a “yes” in many of the Interstate products.

Battery Weight And Ease Of Use

Weight in a battery is not just measurable by “dead weight”—pressure in allocation when the object is not in movement or momentum—but is measurable by how well the battery can be in placement for multiple users.
Even if your marine battery is at a heavyweight (like the Interstate T-31), certain manufacturing adjustments and modifications can be in process to make it easier (like the single-handle feature of the Interstate T-31).
The modifications and adjustments that the company brand accounts for is very much—mark on a mark—significant as the ‘group size’ of a battery, and price can be reflective of that, just as well (same goes for height and width).

Battery Amperage Functions: CCA and RV

Though group size and weight are often direct influencers whenever ‘price’ is of concern, you cannot ignore the importance of performance parameters like CCA and RV, especially when a marine battery is in mention.
Since boats do not use an alternator that a car does (to take the currents and store them for use), they usually need to rely on ‘cranking amperage’ that can both start up a battery especially when it is cold and deep-cycle a battery throughout a body of water.
For the above to occur effectively and efficiently, a high CCA count is almost paramount to the success of the product—and thus, prices can increase for that alone.
Since batteries need to stay in the water for indefinite points in time (depending on the costumer’s experience), they will need to have a high RV count as well, or a reservation of capacity, to make sure that there will be enough floating current or voltage.
When a battery runs out of currents, they usually need a re-charge and a lay-off before the next session—this is why reservation matters and is measurable by minutes, mattering most to not get stuck in the water for too long.

AGM Materials Or “Unique” Materials

Some are hype, and some are worthless, but some do make the grade—and those that make the grade are usually advanced glass mat (or AGM) materials.
One of the main “enemies” of a battery is temperature as both “cold” and “warm” temperature can affect the battery by gradually reducing its voltage—among other degrading things.
If you do not keep a good monitor, the ‘internal’ vibration and structure of your battery cell might be in compromise, and an elevation of heat could produce leaks and spillage of acid-material at the core.
An AGM material structure uses a fiber mat type of design that essentially compresses the battery acid (or sulfate) and keeps it in check as internal movement occurs from battery usage.
Especially in their dual-purpose and their marine products, Interstate uses the AGM design so that both safety and performance will not be in compromise—another price increase, though.

These above factors not only create the conditions that influence a lot of pricing for these batteries (not just Interstate), but you can also ask for these factors to assure the overall quality of a cell (a balance of these factors).

Are “Good For The Price” Interstate Marine Batteries “Free” From Customer Maintenance?

One of the reasons pricing can often go up for many kinds of marine batteries (or batteries in general) is because of the material used.

This issue is a reason why investing in an AGM marine, or deep-cycle battery is a good thing because:

AGM can protect your battery cell from quickly sulfating.
AGM can preserve your battery cell from ‘internal resistance.’
AGM can preserve your battery cell from overall damage from temperature fluctuations.

And, when it comes down to it, batteries (marine or otherwise) that are “relatively” low on “maintenance” will usually be careful:


Not leak out materials from the battery cells ‘inside.’


Not to spill out contents from the battery cells ‘outside.’

You can, therefore, expect a price premium on that one, unless your outlet of choice (Walmart, Costco, or some other) is on sale or something—70 dollars in comparison to 99 dollars for low-end batteries.

How Long Do Interstate Marine Or Deep-Cycle Batteries Last—Does It “Affect” Pricing?

Unlike the performance factors, the “quality” of a battery affects the pricing of a cell usually in reflection by outlets like a Costco.

When it comes to the “age” of a battery, you would want to look for signs of deterioration:

Signs like grease, grime, and dirt
Signs like faulty connector wires and cables
Signs like an older than actual manufacturing date
Signs like low levels of current voltage and “bad” battery testing
Symptoms like more economical than the average retail price at the main branch of Interstate

The things that highlight factors of performance are one thing, and the “quality” of a battery when you find them is another thing altogether—look out for the above signs and ask around for Interstate marine battery prices if you can.

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