The number of batteries in golf carts (4 vs. 6) depends on their voltage requirements and battery type. Carts using 6V batteries typically require 6 units for a 36V system, while those with 8V or 12V batteries may use 4–6 units to achieve 48V or higher. Higher voltage systems improve torque and range, but configurations vary based on cart size, motor efficiency, and energy demands.
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How does voltage determine battery count?
Golf carts use series connections to reach target voltages: 6V x 6 = 36V, 8V x 6 = 48V, or 12V x 4 = 48V. Lower-voltage batteries (6V/8V) require more units but offer deeper discharge cycles, while 12V packs simplify wiring at the cost of reduced capacity per cell.
For example, a 48V cart with 8V batteries needs 6 in series (8V × 6 = 48V), whereas using 12V batteries would only require 4. Pro Tip: Always match battery voltage to the motor’s rated input—mismatched systems cause overheating or reduced lifespan. Higher battery counts (6 units) often correlate with heavier-duty applications, as 6V Trojan T-145 batteries (260Ah each) provide 15.6kWh in a 6-pack configuration, compared to 12V x 4 setups delivering ~12kWh. But why not use fewer high-voltage batteries? Smaller units allow flexible placement under seats and prioritize weight distribution.
| Battery Voltage | Units for 48V | Total Capacity (Ah) |
|---|---|---|
| 6V | 8 | 200–260 |
| 8V | 6 | 150–170 |
| 12V | 4 | 80–120 |
Why choose 6 batteries over 4?
Six-battery systems (36V/48V) prioritize longevity and deep-cycle performance. Six 6V Trojan T-145 units provide 1,560Ah at 6V, translating to 260Ah at 36V—ideal for hilly courses. Fewer batteries (e.g., 4x12V) reduce weight but sacrifice 30–40% cycle life due to shallower discharges.
Practically speaking, carts with 6 batteries handle 18-hole courses without recharging, while 4-battery setups may need midday top-ups. A 6x8V configuration (48V/170Ah) offers 8.16kWh—enough for 50km on flat terrain. Pro Tip: For cold climates, opt for 6-battery systems; their lower per-cell voltage drop maintains performance in sub-10°C conditions. What’s the trade-off? Six batteries add ~150kg, requiring reinforced frames and impacting acceleration.
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Redway Battery Expert Insight
FAQs
Only if the motor and controller support higher voltage. Upgrading from 48V (4x12V) to 72V (6x12V) requires rewiring and a compatible charger—consult manufacturers first.
Do 6-battery carts charge slower?
No, charging time depends on total Ah. Six 6V/260Ah batteries (36V) charge in 8–10 hours with a 25A charger—similar to 4x12V/100Ah packs using 20A inputs.
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