A spraying drone is judged by hectares finished per day, and that number is set by tank size, route accuracy and resupply speed — in roughly equal measure. Buyers who look only at the tank routinely buy the wrong system.
- A 30 L tank with RTK routes covers 20–30 hectares per hour in typical field conditions
- RTK is not optional: without centimeter routes you get skips, overlaps and chemical waste
- Resupply is the bottleneck — plan batteries, charging and mixing before you buy the aircraft
- A quick-swap platform like the SkyLifter H40 earns income outside the season as a cargo lifter
Payload: bigger tank, fewer round trips
Every return flight for refilling is dead time. Moving from a 10 L to a 30 L tank does not just triple the chemical carried — it cuts the number of resupply cycles, which is where most of the day disappears. Heavy-lift platforms also handle granular spreading attachments for fertilizer and seed.
RTK: precision is chemical savings
Centimeter-accurate routes mean each pass lines up exactly with the last: no double-dosed strips, no missed rows, and clean shutoff at field boundaries. Over a season the chemical saved is real money, and uniform application is increasingly a compliance requirement for contract work.
Resupply: the number nobody quotes
Count the full cycle: land, swap battery, refill tank, take off. A well-drilled two-person crew does it in under two minutes; an unprepared one takes ten. Multiply by forty cycles a day and the difference is half a workday. Fast chargers, a generator and pre-mixed chemical barrels matter as much as the aircraft. Battery care practices are covered in Smart Battery Care: Make Every Pack Last a Year Longer.
FAQ
How many batteries do I need?
A working rule: enough packs to keep two always on charge while one flies — typically 4–6 smart batteries per aircraft with a dual-channel fast charger.
Can the same aircraft spread fertilizer?
Yes, if it has a quick-swap mount system. Swapping between spray tank and spreader takes about 30 seconds on the H40.
What happens in the off-season?
With a cargo hook or winch mount, the same airframe does sling-load delivery work year-round — one of the strongest arguments for a modular heavy-lift platform over a dedicated sprayer.
