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Drone Flight Time Calculator

Estimate a drone's flight time from battery and current draw.

Calculated Output

Flight time 9.6

Formula: time = capacity(Ah) * usable / current * 60

Step-by-Step Breakdown

1. Values used:

2. Battery capacity = 5,000 mAh

3. Usable fraction = 0.8

4. Average current draw = 25 A

6. Flight time = 9.6

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The math behind it

time = (capacity in Ah x usable fraction) / average current x 60 minutes.

A 5000 mAh pack at 80% usable drawing 25 A flies about 9.6 minutes.

Why not use full capacity?

Draining LiPo batteries fully damages them, so keep ~20% in reserve.