Battery Authority Blog | Interstate, Car and Marine Batteries Reviews

You can learn the best automotive and boat batteries for your right vehicle to enjoy your outdoor venture.

Battery Authority Blog | Interstate, Car and Marine Batteries Reviews

The Best Interstate Marine Battery Review For The Money

Among the top contenders and never a slouch within competition over market place wherein batteries are a concern, Interstate is a company you can vouch when it comes to an investment. This consideration is especially true when you take into account their SRM series of marine batteries, which are great for deep-cycling functions. If you want to consider more the standing of Interstate before your next visit to Walmart or Costco, you can read this Interstate marine battery review to stack up some info.

What Is The “Best” Rated Marine Battery In The Interstate Lineup?

When it comes to high-performers, there is probably no question that Interstate is consistent when it comes to playing the battery game—along with other performance players, of course.

It is even more of noteworthy praise that Interstate not only performs well within the market and that it is usually within the playing field of either a top 10 or a top 5 (or even a top 3), depending on the reviews you are reading.

Although this review is a tad bit in bias—just a tad bit—when it comes to a report due to the focus being on these Interstate marine batteries—specifically, their “deep cycling” SRM models of 24, 27, 29.

But, not to disrespect the overall performers in the battery market, there are performance markers that Interstate shares with other top performers that you will want to consider:

1. Battery Structure And Design

An essential manufacturing process and priority that many brands focus on can produce a product that can withstand external problems and internal problems, which can be detrimental to maritime operations.
The “external” problems are usually the ones you can expect when the casing of a battery gets hit or receives a “shock” from a hard or sharp object from the outside—some brands use quite a compact and sturdy design for this very reason.
The “internal” stuff (problems) usually falls under the “structure” of a battery, which means good battery cell movement within the battery and a safe non-leak, non-spill of the generation material of the battery (the sulfate that is inside).
Sometimes, the battery from the inside (internal) suffers from spilling or leaking and causes all sorts of sulfating processes to occur, making the sulfate crystallize to the point of “grease and grime”—causing internal resistance or vibration.
For these reasons, the structure or many brands put a premium on specifically reducing shock attacks from the outside, internal vibration resistance from the inside—and Interstate does this quite well in their SRM series.

2. The Ability Of A Battery To Create A “Cold Crank”

“Cold Cranking” is an off-shoot term that relates to how a battery can produce a currency exchange to a vehicle even under the demands of a cold (or warm) environment—adaptive to temperature variations in a way.
The “cold cranking” process usually falls under the label of a CCA rating, as in “cold cranking” amperage—you can think of the amperage as sort of an exchange rate in the voltage you want to use.
Temperature is one of the primary enemies of a battery in almost every way because it reduces the amount of “floating” voltage the cell contains from the last re-charge session.
This problem is, even more, the case when “deep cycling” because a marine vehicle or boat needs to possess both a “starting motor charge” (a starter) and “trolling motor charge” (a deep cycle)—imagine if you do not own the bolts for that (yikes!).
Interstate SRM batteries, along with other top brands, make a point to increase the “amperage capacity” of their cells from as minimal to 550 (which is high enough) to 650 or even 850 CCA.

3. The Ability Of A Battery To Reserve Capacity

This is an equal seg-way that ties in quite well with “cold-cranking amperage”, because while getting a marine vehicle like a boat to start-up or deep-cycle in cold weather matters, it also matters if you can “sustain” that performance when you are nearing a “low voltage”—you do not want to be stuck in the waters!
For a reason, above battery brand manufacturers make a point to create a battery product with a high RC count or Reserve of Capacity, which is usually in measurement by the minute.
If your battery possesses an RC of around even 120 minutes, you are receiving 2-hours of life-saving currents that you can use, which is essential.
The SRM series of Interstate possess such numbers and rounds up to as much as RC counts going to 200—and beyond, and make a point to emphasize it in their larger or higher tier group battery sizes.
In the case of Interstate, you can choose the group battery sizes from 24, to 27 to as much as 29 or even a 31, depending on your budget and preference and usage level of experience.

The above performance metrics are just some metrics that are important when considering a high-performance marine or deep-cycle battery.

Now, for an even bigger question: Are the SRM marine deep cycle battery models of Interstate “the very best” in terms of ratings and reviews?

If you want to know the answer, the most assurance one can give is that it’s a “soft no” because the reality of the matter is that these ratings and reviews change from time to time and vary a lot depending on the objective and goal.

If you like to know more about the topics you are reading then we highly recommend you to go to this battery expert’s website at

Do Interstate SRM batteries give a top 10 or top 5 performance in terms of the marine deep cycle battery above? —you bet it does.

Does Interstate SRM batteries give that performance while becoming a fashionably budget-friendly option especially for new users—definitely, and much more than other brands (if you can say that).

Is There A “Real” Difference Between A “Marine” Battery And A “Deep Cycle” Battery?

This question, believe it or not, comes up a lot in the realm of a marine battery and a car battery.

Is there a “real” (as intangible) difference between a “marine” battery and a “deep cycle” battery—yes there is but not so clear cut as a “hard yes or a hard no.”

You, see the standard batteries people usually look for are:


Car Batteries—which uses an alternator to transfer energy from a cell to the car, and the “alternator” takes over for the battery when the vehicle starts.


Marine (Boat) Batteries—which uses two motors; one for starting (a starter) and one for propelling or trolling (a deep cycle) with the second motor powering up the applications of the boat like lights and even radio.

So, when you think about it, unlike a rv battery, good deep cycling is almost at one point “very crucial” to the marine and boat life that people care to think.

A marine battery cannot “just” startup before it hits the water or marine activity and “call it a day”—the preparation stage for the first motor is not enough.

A deep cycling battery must “ensure” that there will be enough of sustenance in the power source from starting and through propelling or trolling stages—unless you want to end up in the middle of water without much appliances for company.

Are “marine” batteries and “deep cycling” batteries the technically the same? —no.

But you can surmise that both form and function meet when it comes to a quality marine-deep cycle performance battery.

Are These Interstate Deep Cycle SRM Marine Batteries “Free” Of Maintenance?

The short end answer to this is that most top-performing battery brands make it a point to provide the most comforting and high standard performance they can for their customers—so, “yes” is the answer.

But you can never be indeed “free” from maintenance because you still account for some level of control—with these batteries, the power is more natural.

Battery maintenance, at least for most, deals with the problem of monitoring, namely factors to consider in terms of the “longevity” of a battery:

Grime, grease and overall toxic materials inside the battery.
The temperature fluctuations and increases when a battery is not able to undergo a re-charge session.
The outside of the battery casing ensures a shock and “cracks”—enabling more forces to go inside and damage the battery.
The sulfate acid material in the battery “leaking” out and “spilling” out, causing all sorts of sulfating processes and increases heat.
The battery is going through a discharge or low voltage and eventually reaching states of “battery death.”
You can be sure enough to know that it is in company brand’s interest to make these problems as non-existent as possible—but they cannot do everything (though they guarantee much effort is in your assurance).

A most noteworthy promotion from top companies is that their batteries are of high-quality while easing in newer users to the battery use as well as experts who use this for a long time—hopefully, this modest Interstate marine battery review helps you to consider the message of a company like Interstate with your goals.