Why Do Golf Cart Batteries Need Water?


Do golf cart batteries need water? The answer is yes. SLA batteries are filled with sulfuric acid, which reacts as the battery discharges electricity and converts some of it to hydrogen gas. This gas escapes through the battery’s vent system and is released into the air. As it discharges, its electrolytes absorb water to keep itself hydrated.

What happens if you don’t put water in a golf cart battery? When you don’t provide enough fresh water to refill what’s lost during gassing, your batteries will dry out and stop working properly. They may even become damaged beyond repair, leaving you with no other choice than to buy new ones that can cost hundreds of dollars each.

Why Do Golf Cart Batteries Need Water?

Electrolyte Level MaintenanceWater is added to maintain the proper electrolyte level in the battery. The electrolyte provides the necessary chemical reaction for power generation.
Compensation for Water LossDuring the battery charging and discharging process, water molecules break down, resulting in water loss. Adding water compensates for this loss, preventing the battery from drying out.
Temperature RegulationWater helps regulate the temperature inside the battery, preventing overheating. Excessive heat can damage the battery’s components and reduce its lifespan.
Prevention of Plate SulfationProper water levels help prevent plate sulfation, a process that occurs when the battery discharges and sulfates form on the battery plates. Sulfation reduces battery performance.
Maintenance and Longevity of BatteryRegularly adding water to the battery ensures its longevity and overall performance. Adequate maintenance helps extend the battery’s lifespan.

Because They Are Sealed Lead-Acid (SLA) Batteries:

You may have heard the term “SLA” before. SLA is an acronym for sealed lead-acid, which is a type of rechargeable battery. These batteries have been around since 1859, but they’re still used today because they are so reliable and easy to maintain.

The primary benefit of using SLA batteries over other types of rechargeable batteries is their ability to be refilled with water so that you can reuse them again and again without having to buy new ones each time your old one runs out. They’re called “rechargeable” for a reason!

Hydrogen Gas Discharged With Electricity

When SLA batteries discharge electricity, some of it is converted to hydrogen gas. If a battery discharges to a very low level, the resulting hydrogen gas can build up in an explosive manner. This is why you should never store your golf cart without a full charge.

Because hydrogen gas is dangerous and explosive, you shouldn’t have any exposed wires or electrical connections on top of the battery that could spark while it’s being charged or discharged.

Hydrogen Gas Discharged Making A Shortage Of Water

Once you get in your golf cart and start driving, the battery will begin to produce electricity. As this process occurs, some of the gases that were introduced during charging are released back into the atmosphere through a vent system built into the top of your battery. This gas escapes through the battery’s vent system and is released into the air.

Hydrogen gas is one such byproduct of this chemical reaction that generates electricity from your golf cart batteries.

The hydrogen gas produced by your golf cart batteries will collect at the bottom of each cell inside those 6-volt batteries (or 8 cells for 12-volt versions). The vent system allows this hydrogen gas to escape safely so that it does not build up inside your battery over time.

Important To Keep The SLA Battery Hydrated

As you might have guessed, electrolytes are the chemicals in your battery that are responsible for storing electricity. They’re made of sulfuric acid, water, and lead.

To keep your SLA batteries working properly, it’s important to keep them hydrated. When a battery discharges, its electrolytes absorb water from the surrounding air to keep themselves hydrated.

But if there’s no more room for water in the cell casing, and that space is limited by design, then that can cause an issue called “vented gas.”

Check Your Golf Cart Batteries For Water Loss Every 30 Days.

Gassing is the process of converting battery chemicals into hydrogen and oxygen. This is a normal part of the battery discharge cycle, and it’s what gives batteries their power.

But this process also causes batteries to gradually lose water over time. If you don’t check your golf cart batteries’ water levels regularly, they’ll get so low they won’t have enough in them to generate enough power for your vehicle.

This means you need to check your golf cart’s electrolyte levels every 30 days or so; or sooner if you notice any problems with performance or voltage output.

The easiest way to do this is by using a hydrometer (which measures specific gravity) and comparing it with a chart of standard electrolyte values found in most owners’ manuals.

Add Distilled Water To Your SLA Batteries Between Checks.

If the cart is a regular utility vehicle, it may not need to be used often. The more time between uses and the longer you let the battery sit without charging it, the more likely you are to have problems with your batteries.

If this is your situation, then you should check on them every couple of weeks and add distilled water as needed.

In general, distilled water is safe for SLA batteries. However, there are some cautions:

  • You should only add distilled water when it is needed. Adding too much of this type of liquid can damage a lead-acid battery’s plates which leads to premature failure or other problems later in life (and that means expensive repairs). Their maximum capacity will also be reduced because their electrolyte level will have been lowered by adding distilled water to them when they did not need any at all!
  • Only add small amounts (1/8″ maximum) at first until we know what works best for each individual case; if possible test before adding any liquid just in case there isn’t really an issue yet (not all vehicles show signs).

Add Extra Water If You Live In A Very Hot Climate

If you live in a very hot climate, or if your golf cart batteries are used often, additional water may be necessary to keep the battery working properly. You can use distilled water or tap water that has been boiled and cooled.

Distilled Water Helps Last Longer And Function Better.

When it comes to topping up your SLA batteries, distilled water is the best choice. Don’t use tap water or well water because they are both likely to contain minerals and contaminants that can damage your golf cart battery. The same goes for the river, lake, and pond water.

Swimming pool chlorination will also damage your battery as well as saltwater from a swimming pool.

It’s important to check the fill level of your golf cart batteries regularly and add distilled water as needed.

What Happens If You Don’t Put Water In Golf Cart Batteries?

If you don’t properly maintain your golf cart batteries, they won’t work as effectively. This can lead to a number of problems that can be expensive to fix and cause you a lot of inconvenience.

The batteries will not charge fully: If your golf cart battery doesn’t charge fully, it won’t hold electricity as well-meaning it won’t last as long and could even start charging again when the cart is running (which might damage the battery).

The batteries will have reduced capacity: When you don’t give your golf cart batteries water, their capacity will be reduced over time because they aren’t able to recharge efficiently or fully.

How Often Should You Add Water To Golf Cart Batteries?

The frequency with which you need to add water depends on how often you use your golf cart. If you use it more often, then the battery will need more water.

So for example, if you are using it every day or every other day and get several uses per charge, then you might want to check the level of water in your battery every few weeks instead of every month.

What Happens If Your Golf Cart Batteries Go Dry?

Dried SLR batteries could become damaged or explode. Your golf cart battery will not be able to start your vehicle if the cells are dry and cracked. Dried-out batteries can also cause the temperature of a car to rise significantly when operating under load.

Batteries with higher water levels are less likely to overheat and should work better than those that are completely dry. You should check for moisture with a clear piece of glass or plastic put over the top of each cell, as well as at least once every month during hot weather conditions (such as summer).

If any water has evaporated from inside the battery, then it needs to be refilled immediately!

How Do I Know If My Golf Cart Batteries Need Water?

You can test the electrolyte level of your battery with a hydrometer. To do this, you’ll need to remove the battery from its compartment and place it in an upright position on a flat surface.

If you don’t have one, pick up a hygrometer at your local auto parts store for around $10-$20. Alternatively, if you want to get really scientific about it and use technology instead of measuring by eye, there are apps available that will tell you the exact percentage of water needed in each cell!

This option is worth checking out if money isn’t an issue for you. And remember, it costs less than replacing batteries altogether!

Why Do Batteries Lose Water?

Water is lost from the battery as it is used, discharged, and charged. As a battery discharges, some of the water in the electrolyte will be lost by evaporation or spillage. When you recharge your battery, water is added back to the electrolyte.

The amount of water that evaporates depends on several factors including:

  • The temperature of the electrolyte (the solution in which all of its components are dissolved)
  • How quickly do you drain or charge your battery

When Should I Add Water To My Batteries?

  • Add water to batteries every 30 days.
  • Be sure to check the battery water level before adding any distilled water.
  • Do not add too much, or you can damage the cells.
  • When adding water, use a funnel and add it slowly until it sinks into the bottom of each cell.

What Kind Of Water Is Safe For My Golf Car Batteries?

While the importance of adding water to golf car batteries is clear, there’s one more thing you need to know: what kind of water is best? Well, tap water has its own set of challenges.

First, it can contain impurities that damage your battery.

Second, it may also have minerals in it that build up on the plates inside the battery and prevent it from working properly.

And third, this is probably most important; tap water usually contains chlorine which can be damaging to a golf car battery if left inside for too long.

So distilled or deionized water are great options when filling up your golf cart batteries with fresh liquid!

How Much Water Should I Add To My Golf Car Batteries

Adding water to your golf car batteries is an easy, inexpensive way to extend their life. It can also help you avoid having your battery go dead in the middle of a round.

While there are some basic tips that apply to all batteries, you may need to pay attention to certain details based on the brand and model of battery you have.

First and foremost, be sure that your battery is off before adding any liquid. Disconnect the cables from each terminal end, then remove the caps covering each vent well (or fill holes).

Now comes the fun part: filling it with distilled water! Add enough distilled water until it reaches just below or at least level with each filled hole or vent well opening (this varies by golf cart manufacturer).

If there’s too much water in there after adding it slowly as instructed above, and especially if any leaked out while filling.

You can drain out some excess fluid without damaging anything. Just make sure not too much has escaped before draining; otherwise, the damage could occur due to overfilling by mistake!


You don’t want to add too much water because that can cause your battery to leak, but you don’t want there to be too little either because if it runs out then your electric car won’t have enough power! So just fill them up all the way until they’re nice and full, then you’ll know that everything is working properly.

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