How to Refurbish a Golf Cart Battery

Refurbishing a golf cart battery can save you money and prolong the life of your battery, making it a more environmentally friendly option. A golf cart battery is a lead-acid battery, and over time, it can lose its capacity to hold a charge. By following these steps, you can restore the battery’s performance and extend its lifespan.

Materials and Tools:

  1. Safety gear (gloves, goggles, and apron)
  2. Distilled water
  3. Epsom salt
  4. Battery charger
  5. Voltmeter
  6. Flathead screwdriver
  7. Funnel
  8. Turkey baster or syringe
  9. Plastic bucket
  10. Baking soda

Step-by-Step Guide:

  1. Safety first: Before beginning, make sure to wear safety gear such as gloves, goggles, and an apron. Working with lead-acid batteries can be dangerous if proper precautions are not taken.
  2. Inspect the battery: Examine the battery for any signs of damage, such as cracks, leaks, or bulging. If any of these issues are present, it is best to replace the battery rather than attempting to refurbish it.
  3. Clean the battery: Mix a solution of baking soda and water in a bucket. Use a brush to clean the battery terminals and surrounding areas, removing any corrosion or dirt. Rinse with water and let the battery dry completely.
  4. Check the voltage: Use a voltmeter to measure the voltage of the battery. A healthy golf cart battery should read between 12 to 14 volts when fully charged. If the voltage is significantly lower, proceed with refurbishing.
  5. Remove the battery caps: Carefully remove the battery caps using a flathead screwdriver. Ensure not to damage the caps, as they will need to be resealed later.
  6. Drain the battery acid: Using a turkey baster or syringe, carefully remove the battery acid from each cell and transfer it to a plastic bucket. Dispose of the battery acid according to local regulations.
  7. Prepare the Epsom salt solution: In a separate container, mix one quart of distilled water with 1/4 cup of Epsom salt. Stir the solution until the Epsom salt is completely dissolved.
  8. Refill the battery cells: Using a funnel, slowly pour the Epsom salt solution into each cell of the battery. Fill each cell to the proper level, typically marked by a fill line or ring inside the cell.
  9. Replace the battery caps: Reseal the battery by replacing the caps securely.
  10. Charge the battery: Connect the battery to a charger and charge it at a slow rate, usually around 2 to 6 amps. It may take up to 24 hours or more to fully charge the battery. Keep an eye on the charging process to ensure there are no issues.
  11. Test the battery: After charging, use a voltmeter to check the voltage. If it reads between 12 to 14 volts, the refurbishing process has been successful. If the voltage is still low, you may need to repeat steps 6 to 10 or consider replacing the battery.
  12. Reinstall the battery: Once the battery has been successfully refurbished, reinstall it in your golf cart and enjoy your renewed battery life.

Golf Cart Battery Types and Specifications

Battery TypeVoltageAmp Hours (AH)Cycle LifeTypical Use
Flooded Lead-Acid (FLA)6V200-225 AH700-900 cyclesBasic golf carts
FLA8V160-190 AH700-900 cyclesStandard golf carts
FLA12V120-155 AH700-900 cyclesHigher-end golf carts
AGM (Absorbent Glass Mat)6V200-225 AH800-1000 cyclesAdvanced golf carts
AGM12V120-155 AH800-1000 cyclesPremium golf carts

Steps to Refurbish Golf Cart Battery

StepDescriptionTools NeededDurationSafety Precautions
1Battery InspectionVisual inspection10 minWear gloves, goggles
2Clean BatteryWater, baking soda, brush30 minWear gloves, goggles
3Check Specific GravityHydrometer15 minWear gloves, goggles
4Equalize BatteryBattery charger3-6 hrsUnattended, well-ventilated area
5Recondition BatteryEpsom salt, distilled water30 minWear gloves, goggles

Causes of Golf Cart Battery Failure

CauseDescriptionSymptomsPreventionRepair Method
SulfationSulfate crystals buildupSlow charge, low capacityRegular use, proper chargingBattery desulfator
StratificationUneven electrolyte concentrationReduced capacity, voltage dropRegular equalizationEqualize battery
CorrosionCorroded terminals, cablesPoor electrical connectionsClean terminals, cablesReplace terminals, cables
Low ElectrolyteInsufficient water levelReduced capacity, overheatingRegular water level checksRefill with distilled water
Dead CellNon-functional cellUnable to hold chargeReplace batteryN/A

Safety Precautions for Golf Cart Battery Refurbishing

PrecautionReasonSafety EquipmentExample
Wear glovesPrevent acid burnsAcid-resistant glovesNitrile gloves
Wear gogglesProtect eyes from acidSafety gogglesANSI Z87.1 goggles
Work in well-ventilated areaAvoid gas buildupN/AOpen garage, outdoor
Keep fire extinguisher nearbyPrevent firesFire extinguisherClass C extinguisher
No open flames or sparksPrevent explosionsN/ANo smoking, flameless tools

Maintenance Tips for Golf Cart Batteries

Maintenance TipDescriptionFrequencyBenefitTools Needed
Check water levelEnsure proper electrolyte levelMonthlyExtend battery lifeDistilled water
Clean terminals and cablesRemove corrosionQuarterlyImprove electrical connectionsBaking soda, water, brush
Equalize batteryBalance electrolyte concentrationMonthlyEnhance battery capacityBattery charger
Regular chargingKeep battery fully chargedAfter each usePrevent sulfationBattery charger
Check specific gravityAssess battery healthQuarterlyIdentify potential issuesHydrometer



Refurbishing a golf cart battery can be an economical and environmentally friendly way to extend the life of your battery. By following these steps and taking proper safety precautions, you can restore your golf cart battery’s performance and save yourself the expense of purchasing a new one.


  • Ray Barnes

    Ray Barnes, our Senior Staff Writer and a Golf Analyst with a PhD in Sports Analytics, is a beacon of insight in the golfing world. With a deep understanding of the sport's nuances, statistical analysis, and a talent for demystifying complexities, he provides in-depth analysis and captivating narratives that engage golf enthusiasts worldwide.

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