Pick your craft — tiny whoop through cinelifter — set your battery, weight, and how hard you fly, and get your estimated airtime plus the numbers behind it: power draw, average and peak current, and the C-rating your pack actually needs. It even tells you when your battery is lifting itself.
Battery & Endurance Estimator
Estimates use typical hover-efficiency figures per craft class (watts per gram) with a usable-capacity floor of 80% for LiPo (land at ~3.5V/cell) and 90% for Li-Ion. Wind, props, tune, and video gear all move the number — treat this as a solid planning figure, not a stopwatch.
Flight time is pack energy divided by power draw: volts × amp-hours × usable fraction, over average watts, times sixty. We use typical hover-efficiency figures per craft class (watts per gram of all-up weight) scaled by flying style, with usable capacity floored at 80% for LiPo — landing at ~3.5V per cell — and 90% for Li-Ion. The C-rating check estimates peak current at roughly 2–3× average and flags packs that physically can’t deliver it, which is why the calculator will tell you flatly that a Li-Ion pack won’t feed a racing quad.
More battery does not mean more flight time forever. Every gram of pack raises hover power, so returns diminish — and once the battery passes about 40% of all-up weight, extra capacity mostly lifts itself while your handling turns to soup. That’s why the calculator watches battery-to-AUW ratio and calls out the weight spiral, and why two small whoop packs always beat one big one.
Estimates in hand, hit the Flight Log for battery deep-dives, build guides, and gear reviews across FPV, camera, racing, and long-range setups — and treat your packs right: storage charge, balance charge, and retire the puffy ones before they retire your quad.