Can you use marine batteries in a golf cart? This seems to be a very basic yet confusing question that people often ask. As you know, golf carts have become common in modern industries. They help with efficient transport logistics and materials. However, these modern golf carts use electric engines that require batteries for operation.
What if golf cart batteries deteriorate? In such a case, is using a marine battery a sensible option? Remember, marine batteries are used in small boats for starting their engines. In this article, I will discuss both marine and golf cart batteries and their usability. You’ll know whether you should replace golf cart batteries with marine batteries. Let’s get started.
What is a Golf Cart Battery?
A golf cart is a small electric vehicle. Its motor gets power from batteries and powers all the components of a golf cart. Golf carts are used to transport logistics from one location to another. These vehicles run slowly but carry heavy loads. So they require a heavy-duty battery that provides steady power for smooth operation.
Golf cart batteries are deep-cycle batteries that provide consistent power. When the golf cart starts, the batteries continue to power it. This way, the battery’s charging is consumed to a very deep state before it is recharged. In other words, golf cart batteries are charged once they drain and reach 0%. With such extreme use, these batteries don’t degrade and remain in good condition.
That’s because golf cart batteries are deep-cycle. You can use most of their charge (stored energy) before recharging. In fact, doing this repeatedly won’t affect the performance and durability of these golf cart batteries. There are different sizes of golf cart batteries available. These include 6V, 12V, 24V, and so on. The battery you should use depends on the size of your golf cart.
What is a Marine Battery?
Marine batteries are used in small boats, ships, and watercraft. These batteries are designed to provide a sudden, high burst of energy. This energy easily cranks the boat’s engine. Additionally, this also provides enough electrical power to run the components of boats. These include sensors, lights, radio, navigational devices, and so on.
When the boat’s engine starts, the battery’s power is not used aggressively. Instead, the boat’s alternators take over. It starts providing power to the battery and charging it. This means the battery’s charging is not used. Marine batteries generally discharge to 50-60% before recharging. When the boat is running, the marine battery is still in use.
But alternators keep charging it, ensuring its stored power doesn’t drop too low. This means they are not designed to completely drain their power. The internal composition of marine batteries is different from that of golf cart batteries. Their plates are not very thick, which is a drawback. This means that if their charging (stored energy) is used completely, this will reduce their lifespan.
Quick Highlight: It is worth noting that modern golf carts come with lithium-ion batteries. Similarly, boats and yachts use lithium-ion batteries due to their higher efficiency. This means both of these batteries are compact and lightweight. Since these are lithium-ion batteries, both offer high charge cycles and are durable.
Can You Use Marine Batteries in a Golf Cart?
Technically yes. You can use marine batteries in a golf cart in case of an emergency. Occasional use of marine batteries in golf carts is fine. However, in the long run, it is not recommended to fully rely on marine batteries. The reason is that when continuously loaded in a golf cart, marine batteries can degrade.
In fact, marine batteries will degrade within a year if continuously used in golf carts. As I said above, marine batteries are designed to provide a high burst of energy quickly. After starting the engine, they go into idle mode. This means they cannot withstand the continuous load of running a golf cart for a longer duration. However, the golf cart requires both initial bursts of energy and sustained power.
With consistent power, the golf carts can move and transport materials. Now imagine you can use a marine battery in the golf cart. These batteries provide an initial energy burst to start the golf cart’s motor or engine. For running a golf cart, marine batteries must provide consistent power under load. This load will drain their stored energy, which they are not made for.
Since their internal plates are thinner, they won’t withstand heavy use or extreme discharge rates. As a result, the lifespan of the marine batteries will be affected. If you keep using marine batteries in golf carts for a long time, it will significantly shorten their lifespan. However, if you occasionally use a marine battery in a golf cart, that’s not an issue.
When Is It Okay to Use Marine Batteries in Golf Carts?
As I said, using marine batteries in golf carts is okay as a short-term remedy. Imagine you need a golf cart, but its battery is dead. In such a case, you should use a marine battery as an alternative and get your golf cart running. However, it is essential to replace the battery as soon as possible. The longer the marine battery is used in golf carts, the more its health will be threatened.
The reason is that marine batteries are not designed to withstand harsh use or heavy loads. The golf cart draws consistent power from the marine batteries. As a result, the marine battery will discharge quickly and reach an extremely low state of charge. Due to the thin internal plate, the extremely deep discharge will degrade the battery and affect its life. Remember, the golf cart batteries have thicker internal plates.
They are designed and made to withstand extreme discharges with ease. So they can provide consistent power and run the heavy-duty golf cart for hours continuously. Once discharged, they are recharged and become ready to be used again. You should use marine batteries in golf carts only when you have no other option. It is essential to ensure both the marine battery and the golf cart have matching voltage ratings and other specifications.
How Long Will a Marine Battery Last in a Golf Cart?
Marine batteries are sensitive and do not withstand extreme discharges. But when used in golf carts, they experience extreme discharge, which shortens their lifespan. In occasional use in golf carts, marine batteries may last around 8 to 12 months. The situation becomes even worse when you use a golf cart daily while using marine batteries. In this case, the marine battery will degrade more quickly.
Here is the table showing the expected lifespan of a marine battery when used in a golf cart:
| Usage Level | Lifespan |
|---|---|
| Occasional use | 3–12 months |
| Regular use | 2–6 months |
| Heavy use | Weeks–2/3 months |
Differences Between Marine and Golf Cart Batteries
There are differences between marine and golf cart batteries. As a result, it is not recommended to use marine batteries as an alternative to golf cart batteries. One of the primary differences between these batteries is their deep cycle and plate thickness. Golf cart batteries are designed for deep cycling. This means you can discharge the golf cart batteries to 20% or lower.
Additionally, these batteries have thicker plates, which contribute to their durability. In contrast, marine batteries perform dual functions. These include cranking the engine and providing lighter power to the boat’s running lights. These batteries cannot withstand deep discharges because their plates are thinner. Below is the table showing all the differences between these two battery types:
| Feature | Marine Battery | Golf Cart Battery |
|---|---|---|
| Purpose | Boats and accessories | Electric carts |
| Type | Engine ignition / mixed-use | True deep-cycle |
| Plate thickness | Thinner | Thick (durable) |
| Power delivery | Burst and mixed-use | Steady continuous power |
| Discharge depth | Lower (50%) | Higher (70–80%) |
| Durability in cycling | Lower | Higher |
Conclusion
In short, yes – you can use marine batteries in golf carts if their specifications match. However, I don’t recommend doing so as it will shorten the lifespan of your marine batteries. When subjected to heavy loads, these batteries will malfunction.
I suggest using the golf cart’s battery, as recommended in the golf cart’s user manual. However, if you’re in an emergency, you can use a marine battery in a golf cart to get it running. As a short-term solution, this can be a very good option. However, you should not rely on marine batteries for extended periods.