Over 200,000 golf carts are sold annually in the USA. Many never see a golf course. They’re used in large residential communities, resorts, hotels, vacation properties, and on the grounds of businesses with extensive facilities.

Most standard golf carts operate on a 36-volt or a 48-volt system. A 36-volt golf cart typically needs three 12-volt batteries, while a 48-volt system generally requires six 8-volt batteries or four 12-volt batteries.

Millions of batteries power America’s golf carts, and eventually, after several years of uncomplaining service, they fail to hold a charge.

  • Lead-acid batteries last between 4 and 6 years. Regular care can extend their lifespan.
  • Lithium-ion batteries often last 8 to 10 years, with less maintenance required.

So, one day, you may step into your carport, turn the key in your golf cart, and — nada. Nothing happens. The golf cart was plugged in all night; it should be fully charged. What gives?

Now’s the time for a bit of troubleshooting. If you’re lucky, the solution will be simple, and you’ll soon be speeding down the road to pick up your mail.

1. Your Charger Won’t Turn On

Do the Batteries Charge at All?

  • Batteries left uncharged for too long can result in a charge too low for the charger to detect. A charger typically needs a base charge of 25–30 volts to activate.
  • If the battery charge has dropped too low, a small manual charger can provide enough power to enable your regular charger.
  • Some chargers can maintain the battery charge when not in use. This feature is especially beneficial if you’re away for extended periods.

Check Your Connections

  • Loose or improperly connected batteries can cause power loss and charger failure.
  • Inspect each battery terminal for signs of corrosion; any buildup can impede the flow of electricity and may lead to charging issues.
  • Verify that the connections between the batteries are secure and free of frayed wires or weak points.
  • A voltage tester can determine whether the connections are functioning correctly. Test each battery individually to ensure it’s receiving power.
  • If connections are compromised, consider cleaning the terminals and ensuring a tight fit to facilitate better electrical flow.

Battery vs. Charger

  • When the charger is plugged in but doesn’t activate, the issue is probably related to the batteries or their connections.
  • If the golf cart struggles to travel far even when fully charged, this indicates a potential need for new batteries.
  • Use the voltage tester to confirm the batteries’ power levels are low; a low reading confirms the need for replacement.
  1. Battery Charger Malfunction

2. The Charger Runs Too Long or Not Long Enough

  • This may indicate a malfunction in the charger’s internal computer.
  • Such a failure can prevent the charger from accurately determining when to cease charging.
  • Consider a quick tutorial to understand how to replace this component, which could save on repair costs.
  • If the issue persists, you may have to purchase a new charger.

Clicking Sound

  • If the charger emits a clicking sound when plugged in but doesn’t activate, it may attempt to initiate the charging process but fail.
  • This issue doesn’t necessarily require a new charger; resetting the connection between the charger and batteries could solve this problem.
  • If resetting doesn’t work, consult a professional to determine if it’s time for a replacement charger.

Golf Cart Issues

  • For 48-volt Club Car models, onboard computers may hinder the charging process.
  • If batteries show a minimal load but remain uncharged, the golf cart’s computer might misinterpret the current charge status.

Diagnostic Considerations

  • Ensure the computer functions correctly; a relay should click when the charger is plugged in.
  • If you don’t hear a click, check for a blown fuse or a damaged relay, although the latter occurrence is rare.
  • If the fuse is intact and the relay seems to function correctly, consider further diagnosis or consulting a technician to resolve potential underlying issues.

3. Your Batteries Aren’t Holding Charge

Check the Charger Output

  • The most common reason golf cart batteries fail is an inadequate charge from the battery charger.
  • Ensure your charger can deliver enough amperage for your specific battery type and size.

Desulfation: A Possible Solution

  • In some cases, sulfation (a buildup of lead sulfate crystals) may decrease a battery’s ability to hold a charge.
  • A battery desulfator can break down these crystals and improve the battery’s charging capacity.
  • Follow the instructions carefully when using a desulfator. Improper use could damage your batteries.

Choose Powertron for All Your Golf Cart Battery Needs

Troubleshooting different types of deep-cycle batteries can be daunting for novices. If you live in Orange County, CA, trust Powertron Battery Co. for a correct diagnosis and a fair price on chargers and batteries of all kinds.

Even if you live out of state, we may be able to help. We ship batteries throughout the USA.

FAQs: Golf Cart Battery Isn’t Charging

Q: What should I do if my golf cart batteries won’t charge at all?

First, check the connections to ensure they are secure and corrosion-free. Inspect the charger to verify that it is functional; you can do this by testing the output with a voltage tester. If the charger is working but the batteries remain uncharged, consider whether they have reached the end of their lifecycle. Lead-acid batteries typically last between 4 and 6 years, while lithium-ion batteries can last 8 to 10 years. Replacement may be necessary if their age is nearing or beyond these ranges.

FAQs: Golf Cart Battery Isn’t Charging

Q: What should I do if my golf cart batteries won’t charge at all?

First, check the connections to ensure they are secure and corrosion-free. Inspect the charger to verify that it is functional; you can do this by testing the output with a voltage tester. If the charger seems to be working, but the batteries remain uncharged, consider whether they have reached the end of their lifecycle. Lead-acid batteries typically last between 4 and 6 years, while lithium-ion batteries can last 8 to 10 years.

Q: How can I extend the lifespan of my golf cart batteries?

  • Properly maintain and charge your batteries regularly.
  • Avoid overcharging or undercharging the batteries.
  • Keep the connections clean and free of corrosion.
  • Store the batteries in a cool, dry place when not in use.
  • Use a desulfator to remove buildup from lead sulfate crystals.
  • Consider investing in high-quality, long-lasting batteries for your golf cart.
  • Consult a professional if you experience any charging issues or suspect battery failure.

Q: How often should I charge my golf cart batteries?

We recommend fully charging your golf cart batteries after every use. If the cart is used infrequently, check and charge the batteries at least once a month to maintain longevity.

Q: What signs indicate that my golf cart batteries may need replacement?

Common signs include a significant decrease in driving range, slow acceleration, or the batteries taking an unusually long to charge. If you notice these symptoms, it may be time to test the batteries’ voltage or consider a replacement.

Q: Can I use a car charger on my golf cart batteries?

No, standard car battery chargers are designed for different types of batteries and charging profiles. Always use a charger made for golf cart batteries to avoid damage and ensure proper charging.

Q: What’s the best temperature range for storing golf cart batteries?

They should be stored in a cool, dry environment, ideally between 32°F and 80°F (0°C and 27°C). Extreme temperatures can weaken battery performance and reduce lifespan.

Q: Is it normal for golf cart batteries to heat up during charging?

It’s normal for batteries to generate some heat during charging; however, if they become excessively hot, it could indicate a problem with the charger or the batteries themselves. Monitor them for unusual behavior, and consult a professional if necessary.

Q: Should I disconnect my golf cart batteries during long periods of inactivity?

If your golf cart won’t be used for an extended period, disconnect the batteries to prevent excess drain and enable proper maintenance. Recharge them every few weeks to keep them in optimal condition.