Battery C-Rate Calculator
Calculate charge and discharge time from battery C-rate.
Inputs
Ah
V
C
C
Results
Discharge Current
50 A
Discharge Time
2 hrs
Discharge Power2,400 W
Charge Current30 A
Charge Time3.33 hrs
Total Energy4,800 Wh
Charge Power1,440
How to Use This Calculator
- Enter Battery Capacity, Nominal Voltage, and Discharge C-Rate.
- Set Charge C-Rate.
- Review Discharge Current (A) and Discharge Time (hrs).
- Use Discharge Power (W) and Charge Current (A) to inform your decision.
How the result changes with Battery Capacity
| Battery Capacity | Discharge Current | Discharge Time |
|---|---|---|
| 1,001 | 500.5 A | 2 hrs |
| 3,501 | 1,750.5 A | 2 hrs |
| 6,500 | 3,250 A | 2 hrs |
| 9,000 | 4,500 A | 2 hrs |
What each input means
- Battery Capacity
- Battery capacity in amp-hours.
- Nominal Voltage
- Nominal battery pack voltage.
- Discharge C-Rate
- Discharge C-rate (1C = discharge in 1 hour).
- Charge C-Rate
- Charge C-rate (0.5C = charge in 2 hours).
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersBattery Capacity = 100, Nominal Voltage = 48, Discharge C-Rate = 0.5, Charge C-Rate = 0.3 = 4 input(s) provided
- Calculate Discharge CurrentDischarge Current50 = 50
- Calculate Discharge TimeDischarge Time2 = 2
- Calculate Discharge PowerDischarge Power2400 = 2400
- Calculate Charge Current30 = 30
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