How fast will a 72V golf cart go?

A properly converted 72V golf cart with an AC motor and controller upgrade can easily achieve speeds of 35 to 50 MPH, depending on the gear ratio and tire size. This is a significant jump from the 25 MPH limit of most modified 48V carts.

Can I use my stock motor with a 72V battery?

Technically, yes, many stock 48V DC motors can handle 72V input. However, the increased Voltage creates much higher RPMs. If the motor spins too fast (over 6,000 RPM), the internal armature can physically fly apart (grenade). It is safer and more reliable to upgrade to a motor designed for 72V or an AC drive system.

What parts do I need for a 48V to 72V conversion?

You will need more than just batteries. The mandatory list includes: 1) 72V Lithium Battery Pack, 2) 72V Motor Controller, 3) 72V Solenoid, 4) 72V Charger, and 5) A 72V-to-12V Voltage Reducer for your lights and accessories.

Research // Battery_Tech

Golf Cart 48V to 72V Conversion: Speed & Torque Gains

Want to hit 40+ MPH? We analyze the real-world data of converting a 48V golf cart to 72 Volts. See the speed gains, torque figures, and the total cost of the upgrade.

In the Research Lab, we often see owners intimidated by 72V systems. Is it dangerous? Is it expensive? Is it worth it? The short answer: It transforms a golf cart into a neighborhood electric vehicle (NEV) capable of 40-50 MPH.

01 // The Physics: Why Voltage = Speed

To understand the upgrade, you must understand the relationship between electricity and motion.

Lab Equation // Power Dynamics

1. Voltage = RPM

Electrical pressure. Higher pressure pushes the motor to spin faster (6,000+ RPM) without re-gearing.

2. Amperage = Torque

The “grunt.” 72V systems use lower amps to create power, running cooler and more efficiently on hills.

02 // Lab Data: The Performance Matrix

Average data from our testing on a standard EZGO TXT/Club Car Precedent with 23″ tires.

Metric	Stock 48V	Modified 48V	Converted 72V
Top Speed	14 – 19 MPH	25 – 32 MPH	38 – 50+ MPH
0-20 MPH Time	8.5 Seconds	5.2 Seconds	2.8 Seconds
Hill Speed	8 MPH	18 MPH	30+ MPH
Range (Est.)	15 Miles	30 Miles	45+ Miles

03 // The “Domino Effect” Parts List

You cannot simply drop 72V batteries into a 48V cart. The high voltage will fry your electronics instantly.

1. The Battery (The Heart)

Required: 72V Lithium Pack (Eco Battery, RoyPow).
Cost: $2,200 – $3,000.
Lab Tip: Do not use lead-acid. Lithium is the only viable option for 72V.

2. The Controller (The Brain)

Required: 72V-compatible controller (Navitas TSX, Alltrax SR/XCT).
Cost: $600 – $900.
Warning: Stock Curtis controllers will smoke instantly.

3. The Solenoid (The Gatekeeper)

Required: 72V Heavy Duty Solenoid (400A continuous).
Cost: $80 – $120.
Why: A 48V coil will burn out in seconds if fed 72V.

4. The Motor (The Muscle)

Option A (DC): Keep stock motor (Risk of over-revving/explosion).
Option B (AC – Recommended): 5kW AC Motor Kit. Brushless, efficient, safe.

04 // Cost Analysis & Verdict

Budget Build (DC): ~$3,500. Pro Build (AC): ~$5,000.

For Golfers: NO. Overkill and damages turf.
For Street Cruisers: YES. Allows you to keep up with traffic safely.
For Off-Road: MAYBE. Great for towing, but 48V High Torque is often enough.

Lab Verdict: AC is the Way

If you are spending the money for 72V, go with an AC Conversion. It is smoother, safer, and tunable via Bluetooth. Mandatory: Upgrade to hydraulic disc brakes.

View Conversion Kits

More Research?

Explore our deep dives into motor efficiency, tire physics, and controller mapping.

View All Data