Can you use 4 12 volt batteries instead of 6 8 volt batteries on golf cart?
Using 4×12V batteries to replace 6×8V batteries in a golf cart is technically possible but requires careful evaluation of system compatibility and performance trade-offs. While both configurations yield 48V nominal voltage, differences in capacity (Ah), physical dimensions, weight distribution, and controller compatibility must be addressed. Lead-acid 12V batteries typically have lower energy density than 8V counterparts, potentially reducing range. Lithium retrofits may resolve this but demand voltage-specific BMS and charger adjustments.
How to Buy Golf Cart Batteries at Sam’s Club
What voltage considerations apply to battery replacements?
Voltage matching is critical to avoid controller or motor damage. While 4×12V (48V) matches 6×8V systems nominally, voltage sag under load differs. Lead-acid 12V units typically drop to 10.5V at 50% discharge, creating a 42V system vs. 8V batteries sagging to 6.3V (37.8V total). Pro Tip: Verify controller undervoltage cutoff thresholds—many 48V systems trip below 40V, risking premature shutdown with 12V batteries.
How does capacity (Ah) affect runtime?
Total watt-hours determine range. Six 8V 150Ah batteries provide 7.2kWh (6×8×150), while four 12V 100Ah yield 4.8kWh (4×12×100)—a 33% reduction. Lithium alternatives mitigate this—four 12V 105Ah LiFePO4 packs deliver 5.04kWh with 80% usable capacity vs. lead-acid’s 50%. Real-world example: A 48V cart averaging 15mph loses 8-10 miles range using 12V lead-acid but regains parity with lithium.
| Battery Type | Cycle Life | Energy Density |
|---|---|---|
| 12V Lead-Acid | 300-500 | 30-40 Wh/kg |
| 8V Lead-Acid | 400-600 | 35-45 Wh/kg |
| 12V LiFePO4 | 2000+ | 90-120 Wh/kg |
Battery Expert Insight
FAQs
Unlikely—standard 8V dimensions (10.3×7.1×10.9″) differ from 12V (12×6.8×9.4″). Custom trays or spacers are often needed, compromising structural integrity.
Can I reuse my existing charger?
Only if voltage profiles align. Lead-acid chargers apply 58.4V absorption for 48V systems, which damages lithium without a BMS. Use chemistry-specific chargers to prevent overcharge.