Battery Runtime Calculator | PES Supply
Battery Runtime Calculator
Calculate how long your battery will last under any load
Battery Runtime Formula
Runtime (hours) = (Battery Ah × Voltage × DoD × Efficiency) / Load (Watts)
Example: 100Ah × 12V × 0.8 × 0.85 / 500W = 1.63 hours
Runtime Reference Table (100Ah Battery)
| Load | 12V Lead-Acid (80% DoD) | 12V LiFePO4 (100% DoD) | 48V LiFePO4 (100% DoD) |
|---|---|---|---|
| 100W | 8.2 hrs | 10.2 hrs | 40.8 hrs |
| 500W | 1.6 hrs | 2.0 hrs | 8.2 hrs |
| 1,000W | 0.8 hrs | 1.0 hrs | 4.1 hrs |
| 2,000W | 0.4 hrs | 0.5 hrs | 2.0 hrs |
| 3,000W | 0.3 hrs | 0.3 hrs | 1.4 hrs |
| 5,000W | 0.2 hrs | 0.2 hrs | 0.8 hrs |