Choose between the actual carts, not just their voltage labels. Battery condition, motor/controller configuration, documented load limits and the delivered price can change which cart is the better buy.
Pack energy: a reproducible comparison
For batteries connected in series, voltage adds while amp-hour capacity remains the capacity of the series string. Using the current official Trojan T105 and T875 capacity tables, checked October 10, 2026:
| Defined six-battery pack | 20-hour Ah rating | Nominal energy at that rating | 5-hour Ah rating | Nominal energy at that rating |
|---|---|---|---|---|
| Six T105 6V batteries: 36V | 225 Ah | 36 × 225 ÷ 1,000 = 8.10 kWh | 185 Ah | 36 × 185 ÷ 1,000 = 6.66 kWh |
| Six T875 8V batteries: 48V | 170 Ah | 48 × 170 ÷ 1,000 = 8.16 kWh | 145 Ah | 48 × 145 ÷ 1,000 = 6.96 kWh |
Our calculation makes the comparison explicit: at the 20-hour rating, the 48V example has only 60 Wh more nominal energy, about 0.74% above the 36V example. At the 5-hour rating the difference is 300 Wh, about 4.50%. Capacity changes with the discharge rate.
Even the 5-hour columns use different discharge currents: 185 ÷ 5 = 37A and 145 ÷ 5 = 29A. Nominal voltage times rated Ah gives nameplate energy. Actual range and hill performance also turn on discharge voltage, usable depth of discharge and traction losses.
For a used purchase, request battery identification, age and an appropriate condition assessment from the dealer. Compare the exact route, passenger/cargo load, tires and charging arrangement rather than applying a chemistry-wide range table. See our battery guide and range guide.
Lower pack current does not mean more power
In an illustrative equal-input-power case, 4,800W ÷ 36V = 133.3A, while 4,800W ÷ 48V = 100A. Both cases supply the same electrical input power. The current difference is on the pack side only; controller conversion, motor current, torque, gearing and efficiency are separate.
With identical cable resistance, resistive loss follows current squared times resistance, so the lower current heats the cables less. Pack voltage alone does not settle motor winding temperature, acceleration or whole-vehicle efficiency.
Speed and road use require exact documentation
The official manual covering the MY2014 E-Z-GO TXT 48 Fleet specifies a 48V system with six 8V batteries and 10.2–14.8 mph on level ground. Its controller regulates speed. Other TXT models and converted 36V carts have their own specifications. E-Z-GO manual, printed pages 7 and 22.
The federal LSV definition uses four wheels, a GVWR below 3,000 lb and attainable speed over 20 and no more than 25 mph in one mile on paved level ground. It sets no minimum pack voltage. 49 CFR 571.3. State and local rules decide which roads a vehicle may use, so check your state's rules before choosing a vehicle for that route.
Conversion: identify the whole system first
A voltage change requires an exact compatibility decision, not just replacement batteries. Have the vehicle manufacturer and relevant component suppliers document:
- Vehicle model/year and existing series, separately excited or AC configuration; motor voltage, thermal and operating limits.
- Controller, throttle and direction-control harness compatibility, programming and protective functions.
- Contactor/solenoid, cables, connectors, mounting, protection and accessory converter requirements.
- Battery/BMS current limits and behavior with regenerative braking; matched charger profile, charge connection and interlock.
- Vehicle braking, seating/load limits and any warranty or certification impact.
The cited TXT manual prohibits modifications that increase speed beyond factory specifications or adversely affect stability/stopping distance, and does not approve conversion of its products into LSVs. It also requires accessories outside its factory harness to draw from the whole pack through the appropriate converter, rather than tapping one battery. E-Z-GO manual, printed pages 2–3 and 11.
A concrete owner's report shows why the harness belongs in that decision. On October 29, 2024, Cartaholics member bfunky described converting an early-2000s TXT from 36V to 48V using a Navitas DC-to-AC kit. After adapting an already modified harness, reverse did not work correctly. On October 31, he reported a mistaken connection that melted wiring, other inherited harness problems and a screw through direction-switch wiring; replacing the harness resolved the reported operation issue. Primary account and follow-up.
Compare complete costs
Get dated itemized quotes for each exact cart and any approved work. Include battery/charger condition, installed labor, tax, fees and expected repairs. Do not assume a cheaper voltage category or a fixed conversion budget.
For example, hypothetical costs of $2,500 purchase + $1,200 batteries + $200 charger + $250 electrical work + $400 tires/brakes total $4,550. Compare that total with an actual alternative quote.
Use a used-cart inspection guide and ask a local service provider to identify undocumented modifications before buying. Once you know the specific cart's condition and intended use, decide between keeping the existing voltage and choosing a factory configuration.
Golf Cart Search
Find the Best Golf Carts of 2026
Compare top-rated models, read expert reviews, and find the perfect cart for your needs.
