To calculate the required battery capacity:
1. Determine your motor’s current draw using this formula:
Current Draw = Motor Power (W) ÷ Battery Voltage (V)
2. Multiply the total current draw by desired flight time in hours:
Capacity (mAh) = Current Draw × Flight Time × 1000
For example, if your drone’s four motors each draw 10A at 14.8V, and you want 15 minutes of flight time:
- Total Current = 40A (4 × 10A)
- Capacity = 40A × 0.25h × 1000 = 10000mAh
Add 20% capacity for safety margin and consider environmental factors like wind and payload weight.
✓ Expert Reviewed: This content has been reviewed by qualified professionals in the field.
Last Updated: August 24, 2025
Disclaimer: Drone technology information is provided for educational purposes. Implementation should be done by qualified professionals.
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