How the drone charging calculator works
The rotation equation
Continuous flight needs: (charge time ÷ flight time) + 1 batteries. A 70-minute charge against 20-minute flights requires 4–5 batteries minimum. Fewer means gaps — the shoot-day schedule lives or dies on this ratio, and the calculator makes it explicit before the shoot, not during.
Charging infrastructure
The stock charger charges sequentially (slow); multi-battery hubs charge in sequence automatically; car inverters and high-watt PD banks enable field rotation. The wattage input is honest about taper — the last 20% slows just like phone math. LiPo storage discipline (store at ~60%) applies between shoots.
The shoot-day schedule
Arrive with everything at 100%, fly the fleet down, then the rotation begins: charge in sequence while flying the freshest. The calculator's gap line tells you whether lunch is a break or a charging session — the difference between 4 and 5 batteries, usually.