Golf Cart Battery Reconditioning

Golf cart usually contain 4, 6, or 8 lead-acid batteries having 6 volts. They are just like a car battery but with half the voltage. Golf cart battery reconditioning is also just like the car battery reconditioning.

If you have a golf cart, there will come a time when your golf cart batteries will no longer work as before. Their capacity will decrease and you’ll have to replace them or better recondition them.

In this guide, you’ll learn about the simple step by step process to get your golf cart batteries back to work.

You’ll learn

Please note: this guide is for lead-acid battery reconditioning, if you have other types of batteries please check this course to recondition them.

What is a reconditioned golf cart battery?

A reconditioned golf cart battery is the same battery that was previously being used in a golf cart but then flattened and died after its lifespan, then repaired by someone to make it back to work. These batteries can be used for up to 3 years more in the same golf cart.

These give the same charge capacity, but save you a lot of money. Since there are 4-8 batteries required in a golf cart and buying all will cost you up to $1000+.

How to recondition a golf cart battery – Step by Step Guide

Before anything else, take some basic precautions. Because golf cart batteries are lead-acid batteries and you’ll be dealing with acidic solutions. So protecting your skin, your eyes, and your breath as well, are necessary. The reconditioning process is straight and simple, which you can do easily at home.

Needed tools and materials

  • Rubber gloves, mask, goggles, and apron
  • Flathead screwdriver
  • Battery Charger
  • A Funnel and a bucket
  • A Multimeter (OR a Voltmeter will also work)
  • Battery terminal cleaner and a toothbrush (used or new)
  • Distilled water (1 gallon)
  • Baking soda (powder)


Safety first, because you’ll be dealing with an acidic solution. So

  • Wear your goggles, gloves, mask, and apron to avoid any contact with your eyes, skin, or even breathing.
  • Start work in a well-ventilated area.
  • Don’t work inside your golf cart, but remove the batteries first out of it, then work on those batteries.

Procedure of reconditioning golf cart batteries at home

golf cart batteries pack

How to Recondition golf cart Batteries at Home

Total TIme (without charging) 4 hours and 300 minutes

Clean the battery terminals

Cleaning Battery Terminals

First, clean batteries terminal from corrosion which might be built on it.

You can use the battery terminal cleaner if you have one. It’ll work most of the time, and is easy to use.

But if the corrosion is hard then prepare a paste-like baking soda solution with a ratio of 2 parts baking soda and 1 part water. Then dip a toothbrush or steel wool in the baking soda paste and rub the battery terminals with it.

You can use sandpaper grit if the corrosion is very hard. A foaming reaction may show up, which means the solution is working.

Take measurement

Take the measurement of your cart batteries’ voltages and note them on paper. Normally, when the battery is fully charged, it shows 6.3 to 6.4 volts Otherwise it’ll show fewer volts. So depending on the charge that you have given, take the measurement.

If you have charged the battery, then each of your golf cart batteries should show 6.3 volts, or it means there are issues.

It is also better to load test it and see if the voltage is dropping rapidly or not. Because the voltage is not the only thing that shows the battery’s health. Sometimes, the voltage is ok, but the load testing shows signs of a damaged battery.

Follow the next steps for your problematic golf cart batteries.

Clean your golf cart batteries internal plates

golf cart batteries

For this, prepare a baking soda and water solution with a ratio of 1:1 to prepare a running paste.

Then, remove the golf cart cell caps by the flat head screw, and pour the old battery electrolyte into a container. Don’t throw it, because It should be neutralized before putting it into the ground. Add about 1/2 KG baking soda to it to neutralize.

Now fill the battery cells with the baking soda solution that you have made and close the battery caps. Stir the battery for a minute to ensure the solution reaches every part of the battery cells. Then pour off the solution in the same container where the old electrolyte is.

This will clean your battery plates from any acidic solution in them. Now, it’s ready for the new electrolyte to be added in.

Do the same with other golf cart cells.

Refill the battery cells with a new electrolyte

filling epsom salt distilled water in flooded battery

Prepare the Epsom salt + distilled water solution. For this mix 4 cups of water with 4 ounces of Epsom salt OR in easy words, put about 15% of Epsom salt into distilled water. Mix the Epsom salt in the distilled water until it becomes totally clear. You can heat up the water to fasten the mixing process. There should be no solid mass in the solution, everything should be dissolved.

Now, fill all the golf cart cells with the new Epsom salt electrolyte solution.

Recharge with a low Amp settings

Car battery charging jumpstarting

Now charge the golf cart cells with a charger on low Amp settings. Connect the charger red clamp to the positive and black clamp to the negative terminal of the golf cart cell. A better charger is necessary, so it is a good idea to invest in a smart battery charger for your golf cart battery reconditioning.

Ensure the golf cart battery caps are removed because the electrolyte will heat up and produce some gases during the charge. So remove the caps to avoid any unexpected situation.

Set your battery charger at a low amp settings, i.e. 6 Volts / 2 Amps, and recharge your new reconditioned car battery for about 12 to 18 hours.

Re-test your reconditioned golf cart battery

After charging, measure your reconditioned golf cart cells voltage and do a load test on it. It should now show 6.3+ volts.

The cart battery voltage should not drop below 4.8V for about 10 to 15 seconds at half the CCA rating during load testing.

If you don’t have any load tester, try putting it directly in your golf cart and check it there.

EZ Battery Reconditioning explaining Video
EZ Battery Reconditioning Video

Benefits of reviving a golf cart battery

There are many benefits for reviving your golf cart batteries. Some of them are mentioned here.

  • The first benefit is that it saves you from $800 to $1500. Since golf cart require many batteries to run, you’ll need to buy all of them to make it work. Which will cost you.
  • You can save the planet earth by not poisoning it with the undissolvable waste. Lead-acid batteries have acidic solution as well as lead particles. So it should be neutralized before disposing to the ground.
  • You can do batteries reconditioning business to make some money.
  • It is good to know how to recondition a golf cart battery, and doing so is also a fun.

Frequently Asked Questions (FAQs)

Most of the things are clear from the above guide, but you may still have some question about golf cart battery reconditioning. I am answering some frequently asked ones here. But if you still have any question, let us know in the comment below, and we’ll try our best to answer.

Can you refurbish golf cart batteries?

Absolutely, because golf cart batteries are lead-acid batteries and those can be easily reconditioned at home. Golf cart usually has 4 to 8 small 6 volts batteries. If you want to buy a new battery pack, it’ll cost you around $700 to $1500. So better recondition them at your home.

Should I leave my golf cart plugged in all the time?

Yes, manufacturers recommend you leave the golf cart plugged in all the time, but only if you are using an automatic charger. This will keep your golf cart batteries alway full and the smart charger will avoid overcharging your golf cart batteries.

If you left the golf cart batteries unplugged for several months. Their capacity may degrade. So keep it plugged in whenever possible.

Why are my golf cart batteries dying so fast?

The reason why your golf cart battery keeps losing charge or drains quickly, may be due to loose wires, corroded connectors or an insufficient amount of water in the battery. The battery connections may have become loose or the connectors are corroded.

Doing regular maintenance of your golf cart batteries will save your batteries from dying so fast.

How to know if there is any problem with the charger or battery?

Usually it is the battery problem, but sometimes, it can be the charger problem. To test the issue, charge any other battery with the same charger, or use any other charger to charge your current batteries.

What is the estimated life of golf cart batteries?

4 to 6 years is the estimated lifespan of a golf cart batteries. After this time, it degrades and loses capacity. But you can always recondition it.

How does low temperature affect golf cart batteries?

In very low temperature, the battery capacity decreases a little bit. It also slows down the charging and discharging rate of any golf cart cells.

Final Thoughts About Golf Cart Battery Reconditioning

Golf Cart Batteries can really be reconditioned especially when your batteries are not substantially damaged. If you need to learn more about battery reconditioning, you should check out the following course. It teaches you to step by step to repair your dead battery of any type. You can even start your own battery reconditioning business with it.

ez battery reconditioning course
ez battery reconditioning course

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