Here are typical voltage readings for lithium-ion golf cart batteries:
- Fully charged individual lithium cells should read between 3.6-3.7 volts.
- For a common 48V lithium golf cart battery pack:
- Full charge: 54.6 - 57.6 volts
- Nominal: 50.4 - 51.2 volts
- Discharged: 46.8 - 48 volts
- Critically low: 44.4 - 46 volts
- For a 36V lithium pack:
- Full charge: 42.0 - 44.4 volts
- Nominal: 38.4 - 40.8 volts
- Discharged: 34.2 - 36.0 volts
- Voltage sag under load is normal. Batteries will recover to normal voltage when load is removed.
- The BMS will disconnect batteries nearing critically low voltages. Discharging below 36V (12V x 3) can damage cells.
- Consistently low voltages indicate a bad cell or imbalance. The BMS system should diagnose and protect against this.
- Fluctuations at rest above 57.6V (19.2V x 3) indicate potential overcharging or BMS failure.
Checking voltages is a good way to monitor lithium battery state of charge. Voltages outside the normal ranges can indicate problems.
Post time: Jan-30-2024
