Cranking Battery vs. Deep Cycle Marine Battery

Cranking batteries are designed for starting engines. Starting batteries are designed to provide a high burst of power for a short period of time. A deep cycle marine battery is designed to be discharged over a long period of time. It will provide power for lights, appliances and electronics on board a boat while the engine is off.

Deep cycle marine batteries are designed to provide a steady amount of current over a long period of time. This means that they have thicker plates than cranking batteries do, which makes them more resistant to wear and tear. They also have thicker cases because they're designed to withstand being repeatedly discharged and recharged over an extended period of time—which can cause internal damage in other types of batteries if you do it too often or for too long—but this makes it harder for them to produce high bursts of energy like cranking batteries can when needed.

When it comes to boat batteries, there are two main types: cranking batteries and deep cycle batteries. Cranking batteries are designed for short, high-current bursts, like starting the engine. They aren't built for sustained use, so they won't last as long as a deep cycle battery. Deep cycle batteries are designed for long periods of discharge, making them perfect for things like powering trolling motors or running accessories.

If you only need a battery for occasional starting duties, a cranking battery will do the trick. But if you need a battery that can handle more regular use, go with a deep cycle marine battery. They're smaller and lighter than cranking batteries, making them easy to install in any boat.

You have your standard cranking battery, which is great for starting your engine, and then you have a deep cycle marine battery, which is designed for prolonged use.

So what's the difference? A cranking battery is designed to deliver short bursts of energy, while a deep cycle marine battery can provide a steady flow of power for longer periods of time. This makes them ideal for applications such as trolling motors or running lights.

Cranking batteries are also known as "maintenance free" batteries. This means that they don't require any regular maintenance, such as checking the water level or adding acid. However, they do have a limited lifespan and won't last as long as a deep cycle marine battery.

Another thing to consider is reserve capacity.

Deep cycle batteries are designed for powering deeper loads.

deep cycle batteries are designed to be discharged and charged multiple times. Deep cycle marine batteries are designed for powering deeper loads. They can be discharged and charged multiple times, unlike cranking batteries, which are meant to be used briefly and only once. Deep cycle marine batteries are designed to power appliances and electronics on boats that spend long periods of time in one place (such as dockside) rather than being moved around frequently. The main difference between deep cycle marine batteries and standard car or truck starting batteries is that they're made with thicker plates inside the battery case.

A cranking battery should not be used for starting and then running loads.

A cranking battery should not be used for starting and then running loads. The rapid discharge of a cranking battery can cause damage to the cells, resulting in premature failure.

This is why you'll see many marine applications using two different types of batteries—a deep cycle marine battery and a cranking marine battery. The deep cycle marine battery powers all your boat's other electrical components while the cranking marine battery supplies the initial burst of current needed to get those motors going (think about it like starting a car). Once that motor is running, though, there's no need for any additional power from the starter or ignition system—so it switches over to its own power source.

A deep cycle marine battery should not be used for regular cranking of a boat's engine.

If a deep cycle marine battery is used for regular cranking, it will not last long. A cranking battery is designed to provide a burst of power, but the design of deep cycle batteries does not allow them to withstand this kind of action. When you crank an engine, the starter motor works against compression and then turns over the engine. This process can cause damage to both types of batteries if they are made improperly or are stored in conditions where they will not be used regularly.


Know your boat's power needs to choose the best kind of battery.

To choose the best battery for your boat, you need to know your boat's power needs.

You have a few basic choices:

  • Cranking Batteries. These are designed to provide high-power bursts of energy when starting an engine, which means they can last only a few minutes before needing to recharge again. They're meant for small engines like outboard motors, jet skis and snowmobiles—not big boats that run electrical systems with heavy-duty loads like refrigerators or heaters.

  • Deep Cycle Marine Batteries. This type of marine battery is made specifically for use in boats' electrical systems because it provides relatively small amounts of power over long periods of time (like running lights off solar panels). A deep cycle marine battery will last longer than a cranking one if left on constant charge or used frequently throughout the day—but if left sitting unused overnight (or during long periods between uses), it may die because its capacity isn't enough compared with what’s required by larger appliances like air conditioners or microwaves that require continuous power usage over long periods before draining their entire charge within days at most."

Which is better new battery for you?

Choosing a battery for your boat is not as simple as picking the cheapest one. It's important to understand how each type of battery differs and what you need from your vessel.

Cranking Batteries

If you only want to use your boat for occasional usage, then a cranking battery is the way to go. Some people opt for this type of battery because they're less expensive than deep cycle batteries (and easier to find). However, using a cranking battery on a regular basis will cause it to wear out faster than if it were being used only in emergencies.

Deep Cycle Batteries

On the other hand, if you plan on using your vessel frequently or need power during long periods of time—for example, while camping—then investing in a deep cycle marine boat battery could save money over time by extending their life span and reducing maintenance costs like replacing worn-out equipment like starters or alternators.


In conclusion, when choosing a starting battery or finding the right marine battery for your boat it is important to understand the different types and what you need from your vessel. Be sure to find the highest quality battery for the price and consider a Volthium Lithium Battery which you can check out here.

Volthium Lithium batteries is a dual purpose battery because they can be uses as your boat's battery but also as a battery for deep cycle applications like solar, medical, RV, etc. They are maintenance free, have fast recharge times, and provide enough voltage power for your other accessories.



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