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🔧 Technical Deep-Dive Available: This guide covers the owner-level conversion process. For engineering details — 48V electrical architecture, BMS sizing calculations, brand-specific compatibility (Club Car/EZ-GO/Yamaha), controller matching, and troubleshooting — see our 48V Golf Cart Lithium Conversion: Complete Engineering Guide.
Why Convert to Lithium
Lead-acid golf cart batteries last 2-4 years, require watering, and lose capacity quickly. LiFePO4 lithium batteries last 8-10 years, need zero maintenance, charge 3x faster, and weigh 70% less. For fleet operators, the total cost of ownership favors lithium within 2-3 years.
What Voltage Do You Need
Match your cart’s existing system:
- 36V carts: Use 36V 100Ah (standard range) or 36V 200Ah (extended range)
- 48V carts: Use 48V 100Ah (standard) or 48V 150Ah (extended range)
- 72V carts: Use 72V LiFePO4 battery
Never mix voltages. If unsure, check your current battery configuration or consult your cart manufacturer.
What Else Needs to Change
- Charger: You MUST use a LiFePO4-specific charger. Lead-acid chargers will damage lithium batteries. Set charge voltage to 43.8V (36V), 58.4V (48V), or 87.6V (72V).
- Battery meter: Lead-acid voltage meters won’t read lithium accurately. Install a shunt-based monitor.
- Hold-downs: Lithium batteries are smaller and lighter. Use foam spacers or new brackets.
Installation Steps
- Disconnect and remove old lead-acid batteries. Recycle properly.
- Clean the battery tray; check cables for corrosion.
- Place LiFePO4 battery in tray, secure with hold-downs.
- Connect main positive and negative cables. Torque to spec.
- Connect charger. Do a full charge before first use.
- Test drive. Check BMS app (if equipped) for cell balance.
Cost Comparison
Example for 48V golf cart (4x 12V lead-acid vs 1x 48V 100Ah LiFePO4):
| Item | Lead-Acid | LiFePO4 |
|---|---|---|
| Battery cost | Lower upfront | 2-3x upfront |
| Lifespan | 2-4 years | 8-10 years |
| Maintenance | Monthly watering | Zero |
| Weight | ~120 kg | ~35 kg |
| Usable capacity | 50% DOD | 90%+ DOD |
Frequently Asked Questions
Can I use my existing charger?
No. Lead-acid chargers use different voltage profiles and may lack proper cutoff. Always use a LiFePO4 charger.
Will lithium work with my motor controller?
Yes, if voltage matches. LiFePO4’s flat discharge curve actually improves performance consistency.
How do I dispose of old batteries?
Return to a battery recycler or auto parts store. Lead-acid has core charge value in most regions.
Contact LJY Energy for golf cart battery quotes and fleet pricing. We supply 36V, 48V, and 72V LiFePO4 batteries for cart manufacturers and fleet operators.
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