How to Calculate Battery Backup for Home
1. Determine Power Consumption
Find the total wattage of all appliances you need to power.
2. Estimate Required Backup Time
Decide how many hours the battery should last during a power outage.
3. Calculate Battery Capacity
Use this formula to calculate battery capacity:
Battery Capacity (Wh) = Total Power Consumption (W) × Backup Time (hours)
Example: 1000 W appliances for 5 hours
Calculation: 1000 × 5 = 5000 Wh
4. Convert to Amp-Hours
For a 12V battery:
Battery Capacity (Ah) = Battery Capacity (Wh) ÷ Battery Voltage (V)
Example: 5000 Wh ÷ 12V = 416.7 Ah
5. Consider Battery Efficiency
Adjust calculations for battery efficiency (Lead-acid: ~80%, Lithium-ion: ~90%).
6. Include Inverter Efficiency
Multiply power consumption by 1.1–1.2 to account for inverter losses.
7. Number of Batteries Needed
Divide required Ah by the capacity of each battery to determine the quantity.
Conclusion
Choose the right battery based on capacity, voltage, and efficiency to optimize backup power.
No comments:
Post a Comment