Golf cart will not charge: what to check before you buy a battery

A golf cart that “will not take a charge” is one of the most common calls we get in Inverness, and it is a battery problem less often than owners fear. Before anyone talks about a $1,200 to $1,800 pack, we test the charger, the port, and the pack voltage, because a $100 to $300 charge-port repair solves a large share of these calls.

Check this first (fifteen minutes)

1. Look for any light or fan on the charger. Nothing at all often means the pack is too discharged for the charger to sense it, or the port has failed.
2. Check the plug end. A tripped GFCI outlet or a dead extension cord causes exactly this complaint and costs nothing to fix.
3. Look inside the charge port. Green or white corrosion on the pins, or a pin that looks pushed back or bent, points to the port rather than the charger.
4. Listen for a relay click when you plug in. A click with still no charging current points to the charger’s internal relay or fuse.
5. Note whether it ever finishes. A charger that runs all night and never shuts off is a different problem from one that never starts at all, and it usually means the pack, not the port.

What is usually wrong

Every figure is from the pricing page, and the $50 to $100 service call is applied to the repair.

The Citrus County angle

Humidity, everywhere in the county. NOAA’s Inverness 3 SE normals put annual rainfall at 52.39 inches, 58 percent of it falling June through September. A garage that stays damp for a third of the year oxidizes the exposed metal contacts inside a charge port, and oxidation is resistance, resistance is heat, and heat pits the contacts until the charger reads an open circuit.

Salt, on the Gulf side. In Crystal River and Homosassa, where the county’s spring-fed rivers reach the Gulf, salt air makes the same corrosion happen faster. Carts that live near those rivers need port pins cleaned and dielectric-greased more often than an Inverness or Citrus Hills cart parked well inland.

Summer heat on the pack itself. The same station counts 111.7 days a year at 90°F or above, and heat is what drives sulfation in a flooded pack that has gone unwatered. A pack that has quietly lost capacity over a summer can look like a charger fault because it never reaches the voltage the charger is waiting for to shut off. That is the case the range dropping page covers.

Chargers by cart type

Older Club Car, E-Z-GO, and Yamaha electrics use an external charger with a cart-specific plug, and on Club Car models with an onboard computer, the computer has to properly see the charge cycle or the cart will not release afterward. ICON, Evolution, and most low-speed vehicles use onboard chargers and, on lithium models, a battery-management system that talks to the charger directly. Lithium conversions always include a lithium-profile charger, since a lead-acid charge curve will not properly charge LiFePO4.

Before a storm

Ahead of forecast weather we prioritize charger and battery calls so a cart is fully charged before the power goes, and once it is full, unplug the charger from the wall. When utility power returns after an outage it often comes back with a surge, and a charger left plugged in through that surge is a common storm-season failure. Our storm season prep guide has the full sequence, which matters most on the Gulf side after events like Hurricane Helene’s record storm surge into Crystal River in September 2024.

What to expect on the call

Tell us the cart brand, the charger brand and model if you can read the label, whether it is 36V or 48V, and exactly what happens when you plug it in. A photo of the charger label and the charge port helps. We test the port, the charger’s output, and the pack in that order and give you a flat number before anything gets replaced.