How to Troubleshoot Common Golf Cart Battery Problems: 5 Simple Solutions

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How to troubleshoot common golf caret battery problems

Ready to tackle battery problems head-on? Learn how to troubleshoot common golf cart battery problems and take control of your game.

Picture this: you’re out on the golf course, enjoying a beautiful day, when suddenly your golf cart battery dies. It’s a frustrating situation that can ruin your entire game.

But don’t worry, I’ve been there too.

That’s why I’m here to share with you how to troubleshoot common golf cart battery problems.

In this article, I’ll guide you through the process of identifying and fixing battery issues on your golf cart. From low voltage to dead cells, I’ll cover it all and give you the tools you need to keep your golf cart running smoothly.

Key Takeaways

  • Golf cart batteries are essential for the performance and longevity of electric golf carts.
  • Common problems that golf cart batteries may face include low voltage, overheating, sulfation, corrosion, and dead cells.
  • Troubleshooting and fixing these problems can be done using simple steps and tools.

How to Troubleshoot Common Golf Cart Battery Problems

Here’s a roundup of the most common golf cart battery problems that might have throwing your clubs in the lake and shouting at the geese.

Low VoltageBattery voltage is lower than the recommended level, causing the golf cart to run slowly or not at all.
OverheatingBattery overheats due to excessive charging or usage, which can cause permanent damage to the battery.
SulfationSulfate crystals build up on the battery plates, reducing the battery’s capacity and lifespan.
CorrosionBattery terminals and cables corrode due to exposure to moisture or other environmental factors, leading to poor electrical connections.
Dead CellOne or more cells in the battery fail, causing a drop in voltage and reducing the battery’s overall capacity.

Low Voltage

One of the most common issues that golf cart owners face is low voltage. Low voltage causes reduced power, shorter range, slower acceleration, and premature battery failure.

Voltage is the difference in electrical potential between the positive and negative terminals. It can vary depending on the state of charge, the load, the temperature, and the age of the battery.

There are several possible causes of low voltage. Improper charging, parasitic drains, or loose connections can all be culprits.

Improper Charging

Improper charging can cause serious damage to your battery. Using the wrong charger or a malfunctioning charger can wreak havoc on your battery. Even an interrupted or incomplete charging cycle can cause issues later on.

Parasitic drain

Did you know that even when your golf cart is off, lights, radio, or GPS can still draw power from the battery? This can lead to a dead battery and a frustrating experience when you’re ready to hit the greens.

Loose connections

Bad cables and connectors can cause serious issues. They can corrode, wear out, or not be tight enough.

So, Now What?

Glad you asked! By comparing the battery voltage to the manufacturer’s specs, we can see how we’re doing. We can use a voltmeter for this.

A charged 6-volt battery should have a reading of 6.4 volts or higher. Whereas a 12-volt battery should have a reading of 12.6 volts or higher.

If the voltage is low, you can first check the charger for any faults or damage and replace it if you need to.

A good charger has an automatic shut-off feature. This is to prevent overcharging or undercharging the batteries.

If the charger seems OK, inspect the cables and terminals for corrosion, wear, or looseness. Corrosion reduces conductivity and increases the resistance of the electrical circuit. Clean or tighten them as needed.

To check for parasitic drain, you need to measure the current flowing from the battery when the golf cart is off.

  1. Use a digital multimeter for this. Set the multimeter to measure amps.
  2. Connect the black probe to the negative battery terminal and the red probe to the negative battery cable. Wait for any initial electrical activity to subside (usually takes a few minutes).
  3. It will show you how much current the accessories draw from the battery.
  4. A normal parasitic drain should be under 50 milliamps. If the reading is higher than that, you have a problem with one or more of the accessories.
  5. To find out which accessory is causing the parasitic drain, you can remove the fuses one by one. When the reading drops, congratulations! You have found the problem.

Now, it’s a matter of fixing or replacing the culprit.

Here’s a video that goes into detail about detecting parasitic drains on a car. The same skills are transferable to your cart.


Overheating can impact the life of your battery and the performance of your cart. When a battery overheats, it can cause the electrolyte to evaporate. This can lead to a loss of capacity and premature failure.

Overheating can also cause the battery terminals to corrode. As we talked about before, this can lead to poor connections and voltage drops.

There are several possible causes of overheating. These include overcharging, overloading, poor ventilation, and high ambient temperature.

Overcharging is when the battery charger continues to charge the battery when it is full.

Overloading occurs when the cart carries excess weight or drives at excess speeds. This can cause excessive current draw and heat generation in the batteries.

This is how to prevent overheating. Avoid overcharging the battery. Use a proper charger with an auto shut-off feature. If your charger is not functioning right, repair or replace it.

Avoid overloading the golf cart. Follow the weight and speed recommendations. This will prevent excessive current draw and heat generation in the batteries.

Third, provide ventilation for the batteries by keeping them clean and dry. Store them in a cool and shaded place. This will help dissipate heat and prevent thermal runaway.

And finally, check the battery temperature with a thermometer or an infrared camera. If the battery temperature exceeds 125°F (52°C), stop using the golf cart. Let the batteries cool down before resuming operation.


Do you know what’s the biggest bugbear when it comes to golf cart batteries? It’s sulfation! Those dog-gone lead sulfate crystals form on the plates, sucking the life from the battery.

Not only do they reduce the battery’s capacity, but they make it less efficient. This means a shorter battery life and poor performance. But don’t worry; there are ways to fight sulfation and keep your golf cart running at peak performance!


Undercharging can cause lead sulfate crystals to form on the battery plates. This kills the capacity and efficiency of the battery.

Deep discharging

Discharge your battery too far? Lead sulfate crystals harden on the battery plates, making them hard to dissolve.

Long periods of inactivity

If a battery is not used for an extended period, it can also cause sulfation to occur.

To prevent and reverse sulfation problems, maintain your golf cart batteries. Here are some tips:

  • Keep the batteries charged using a proper charger with an automatic shut-off feature. This will prevent undercharging and reduce the risk of sulfation.
  • Follow the manufacturer’s recommendations on the depth of discharge (DOD) to avoid deep discharging the batteries. This will prevent lead sulfate crystals from hardening on the battery plates.
  • Use a battery maintainer to keep the batteries active and full during periods of inactivity. This will prevent sulfation from occurring.
  • Use a desulfator or a pulse charger to break down lead sulfate crystals and restore battery capacity. This will dissolve lead sulfate crystals without damaging the battery plates.


One of the most common problems with golf cart batteries is corrosion. Corrosion affects performance and battery life. Metal surfaces rust and corrode when exposed to moisture, salt, or acid.

To prevent battery corrosion, use only distilled water to maintain proper water levels. Acid concentration can increase with water loss, causing corrosion on battery terminals. Cleaning acid spills with baking soda and water solution prevents corrosion on the battery case and cables.

This video demonstrates how simple it is to do.

Protect the batteries from moisture or salt by storing them in a dry place. Moisture or salt can cause rust and corrosion on the battery terminals and cables. Using anti-corrosion spray or grease can prevent this.

If corrosion has already occurred, use a wire brush to scrub the affected areas. Replace any loose or frayed wires. After scrubbing, rinse the area with water and dry it.

Dead Cell

A dead cell is the battery equivalent of missing an easy putt from a yard out. It can affect the performance and lifespan of your battery, reducing efficiency and your time on the green.

So, what exactly is a dead cell?

A dead cell is a battery cell that can no longer hold a charge or produce electricity. An internal short circuit, plate sulfation, or physical damage can all be causes.

If left unchecked, a dead cell can lead to bigger problems, like charging issues or a completely dead battery.

You can follow a few tips to identify and replace a dead cell.

Use a hydrometer to measure the specific gravity of each cell in the battery. A dead cell will have a lower specific gravity than the other cells.

Here’s how it’s done.

Additionally, you can use a load tester to measure the voltage drop of each cell. A dead cell will have a higher voltage drop than the other cells.

If one or more cells are dead, replace the battery. Reviving a dead cell is tricky and will reduce the longevity of the battery.

If you are unsure about identifying a dead cell, take it to an auto mechanic or your local Auto Parts store. They can test your battery and let you know if it’s saveable.

Before You Go …

Don’t make the mistake of thinking that troubleshooting common golf cart battery problems is the end of the road. You need to understand how golf cart battery chargers work to keep your golf cart running smoothly.

That’s why we’ve created our next post, “How Do Golf Cart Battery Chargers Work? Unlock the Secrets of These Game-Changing Devices.

By reading this post, you’ll gain a deeper understanding of how these chargers work and how to use them effectively. Don’t let a dead battery ruin your day on the course – read this post and unlock the secrets to keeping your golf cart running smoothly!

Frequently Asked Questions

Here’s the FAQs.

What are the symptoms of a bad battery on a golf cart?

A bad battery on a golf cart can cause a number of symptoms. The most common include slow acceleration, reduced speed, and shorter driving range. Other symptoms include trouble starting, dimming lights, and a battery that feels hot to the touch.

What would cause a golf cart battery not to charge?

Quite a few things can cause a golf cart battery not to charge. The most common is a faulty charger. Other things include corroded battery terminals, damaged cables, and a defective battery.

What is the most common problem with electric golf carts?

The most common problem with electric golf carts is battery-related issues. Batteries can be expensive to replace. They also need regular maintenance to ensure the best performance. Other common problems include faulty solenoids, damaged controllers, and worn-out tires.

How do you reset a golf cart battery?

To reset a golf cart battery, disconnect the negative battery cable from the terminal. Leave it disconnected for at least 10 minutes, then reconnect it. This will reset the battery and clear any error codes that may be causing the problem.

How do you troubleshoot a golf cart solenoid?

To troubleshoot a golf cart solenoid, start by checking the battery voltage. If the battery voltage is low, charge the battery and try again. If the battery voltage is normal, check the solenoid for loose connections or damaged wires. If the solenoid is faulty, it will need replacing.

What are the symptoms of a bad controller on a golf cart?

A bad controller on a golf cart can cause several symptoms. The most common symptoms include low speed, poor acceleration, and a shorter range. Others include a cart that jerks or hesitates when accelerating or that runs at full speed without any input from the accelerator pedal.

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Steve Brown


Steve is a gadget enthusiast who's always been intrigued by batteries. The founder and editor of Battery Chargers Info, he's assembled a group of like-minded experts to cover every facet of portable power His aim is to help you learn more about your favorite gadgets and their batteries so you can maximize both their performance and their life. Follow him on Twitter: @batterycharge1

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