How long golf cart batteries last, and how to care for them

Golf cart batteries are the most expensive part you replace on a regular basis. How long they last depends on the type, how you use the cart, and how you look after them.

Most published numbers come from dealers and battery makers, so treat them as ranges. A shop that tests batteries every week can tell you what it sees on carts like yours.

How long they last

Sources disagree on the exact number, which is normal for a product that depends so much on care. Lead-acid batteries are commonly put at about 2 to 7 years. One Austin dealer says well-maintained sets typically last 4 to 7 years. Lithium makers say their batteries can last a decade or more.

How often you drive. A daily cart wears batteries faster than a weekend cart.
How deeply you drain them. Running a pack nearly empty again and again shortens its life.
Charging habits. The right charger, used consistently, matters for both types.
Watering and cleaning, for flooded lead-acid batteries.
Heat, cold and how the cart is stored.

Caring for lead-acid batteries

Check the water in each cell regularly and top it up with distilled water. Do not overfill, because it can overflow during charging.
Use a charger made for golf cart batteries and charge on a steady routine. Avoid both overcharging and chronic undercharging.
Clean corrosion off the terminals with a baking soda and water mix and a wire brush. Rinse, dry, and coat the terminals with protectant.
Look them over about once a month for corrosion, cracks, leaks and loose connections.
Some makers recommend an occasional equalizing charge so all cells charge evenly. Follow the instructions for your battery.
For long storage, charge them fully first and keep them on a maintainer or disconnected, in a cool, dry place.

Caring for lithium batteries

Use a lithium charger that matches the pack. A lead-acid charger can charge them the wrong way.
Leave the battery management system alone. It protects the pack and should never be bypassed.
For long storage, makers advise a partial charge rather than full or empty, in a dry, protected place.
Check the terminals and cables before the season starts.

Cold weather and charging

Cold hurts in two ways. It cuts range for every battery type, and the range usually returns as the battery warms up. Charging in freezing weather is the bigger risk.

Lithium. Many lithium packs should not be charged below freezing. Charging a cold lithium battery can damage the cells, and one maker warns the damage can be permanent if the charge current is not reduced below 32°F. Most packs have a battery management system that blocks charging when it is too cold. Do not override it. Let the battery warm up instead.

Heated lithium. Some lithium batteries have a built-in heater, often called self-heating or low-temperature batteries. When you plug in on a freezing day, the pack warms itself first and then charges, so charging can go ahead in the cold. Charging takes longer in the cold because some of the power goes to heating. Each maker sets its own temperature limits, so read the specs for the pack you are considering.

Non-heated lithium. These are fine if the cart lives somewhere that stays above freezing, such as a heated or insulated garage, or if you can bring the cart or the battery inside to charge. If the cart sits outside or in an unheated shed all winter, a heated battery is worth pricing.

Lead-acid. These also lose capacity in the cold. A discharged lead-acid battery can freeze, which can crack the case, so keep them charged through winter. Do not charge a battery that is frozen. Let it thaw first.

Battery warranties

Warranties vary a lot between brands and sellers, so read the terms before you buy. Compare these things:

How long it lasts, and whether the time is counted from the purchase date or the install date.
Whether it is prorated (you pay a growing share as the battery ages) or a full replacement.
Whether labor and installation are covered, or only the battery itself.
What can void it, such as a wrong charger, a bypassed battery management system, a do-it-yourself install, or missing maintenance records.
Who handles a claim: the seller, the maker, or a shop near you.
Whether it transfers if you sell the cart.
Whether it sets limits on cold-weather charging or storage.

Signs batteries are wearing out

The cart goes a shorter distance on a full charge.
It slows down on hills or feels weak late in a ride.
A battery bulges, leaks or has heavy corrosion.
One battery tests much lower than the rest. A shop can test each one.

Find a shop

Ready to talk to someone? Browse golf cart repair shops in North Carolina and call the one nearest you.