UPS Battery Sizing Calculator
Calculate battery capacity for uninterruptible power supply systems.
UPS Battery Design Factors
- Depth of Discharge: Lower DOD extends battery life
- Aging Factor: Accounts for capacity loss over time
- Temperature: Battery capacity decreases in cold
- Discharge Rate: High rates reduce effective capacity
- Recharge Time: Plan for charger sizing
Battery Life vs Depth of Discharge
| DOD | VRLA Cycles | Li-Ion Cycles | Life @ Daily Use |
|---|---|---|---|
| 50% | 1200-1500 | 3000-5000 | 3-4 years |
| 60% | 800-1000 | 2500-3500 | 2-3 years |
| 70% | 500-700 | 2000-3000 | 1.5-2 years |
| 80% | 300-500 | 1500-2500 | 1-1.5 years |
| 90% | 200-300 | 1000-1500 | 6-12 months |