Battery Capacity Calculator — सूत्र
## Battery Capacity Sizing
Battery capacity must account for the load, duration, efficiency losses, and depth-of-discharge limits.
### Formula
**Required Ah = (P / V) x Hours / Efficiency / DoD**
where P is load power in watts, V is battery voltage, Hours is the backup duration, Efficiency accounts for inverter and wiring losses, and DoD is the maximum allowable depth of discharge (to protect battery life).
Battery capacity must account for the load, duration, efficiency losses, and depth-of-discharge limits.
### Formula
**Required Ah = (P / V) x Hours / Efficiency / DoD**
where P is load power in watts, V is battery voltage, Hours is the backup duration, Efficiency accounts for inverter and wiring losses, and DoD is the maximum allowable depth of discharge (to protect battery life).
हल किया गया उदाहरण
500 W load on a 48V battery system for 4 hours, 80% DoD, 90% efficiency.
- Load current = 500 / 48 = 10.42 A
- Usable capacity = 10.42 x 4 / 0.90 = 46.3 Ah
- Total capacity = 46.3 / 0.80 = 57.9 Ah
- Battery energy = 57.9 x 48 / 1000 = 2.78 kWh