What Is a Golf Cart Battery Load Test?
A load test applies a controlled electrical current to a battery (simulating real use) while measuring how the voltage holds up. Unlike a simple static voltage test, a load test reveals whether your batteries can actually deliver power when the motor demands it.
Static voltage test: Shows current charge level (like checking a gas gauge)
Load test: Shows battery health and capacity (like seeing if the engine actually runs properly)
Why Load Testing Matters
A battery can show normal resting voltage (e.g., 50V for a 48V pack) while still having one or more failing cells. Those failing cells hold surface charge but collapse under load — causing the pack to sag severely when you accelerate or climb a hill.
How to Load Test with a Multimeter (Basic Method)
This method uses a helper and your multimeter. It's not as precise as a commercial load tester but reveals severe issues:
Results interpretation for a 48V pack:
| Under-Load Reading | Interpretation |
|---|---|
| 46V or above | Pack is healthy |
| 42–46V | Mild weakness; monitor closely |
| 38–42V | Significant degradation; replacement soon |
| Below 38V | Severely failing; replace batteries |
Professional Load Tester Method
A dedicated battery load tester (e.g., Midtronics, Trojan TBST) applies a precise current load (typically 150–250 amps) to each individual battery for 15 seconds while recording voltage. This identifies exactly which battery in the pack is weak.
TIGON Golf Carts performs professional load tests at all 16 physical stores at no charge. If your cart feels sluggish on hills or isn't holding range like it used to, call 1-844-844-6638 and schedule a free load test today.