18650 Li-ion FPV Drone Build | Firefly18 on Crux3 (18.5 min flight)

Описание: Firefly18 on steroids — or maybe Firefly30?
In this video, I move the Firefly18 electronics stack and camera onto a Crux3 frame and test how well a single 18650 Li-ion battery works on a micro FPV drone.

This build focuses on efficiency and endurance, not raw power.

Build components:
Crux3 frame
Happymodel EX1202.5 11500KV motors
3018 propellers
18650 Li-ion batteries (LiitoKala & Molicel P30B)

What’s tested in this video:
Indoor and outdoor FPV flights
Flight time testing with 18650 Li-ion
Low-voltage performance
PID & Rates tuning for Li-ion efficiency
Jello effect and how PID tuning eliminates it

Results:
✔️ Firefly18 can fly with a 18650 Li-ion battery
✔️ Over 18.5 minutes of flight time
✔️ Molicel P30B delivers better current at low voltage than LiitoKala HG2
✔️ PID & Rates tuning removes jello
⚠️ Frame, motors, and propellers must be upgraded for this setup

📦 Links to all parts used in this build:
Crux3 Frame - https://s.click.aliexpress.com/e/_EIa...
Motors 1202.5 11500KV - https://s.click.aliexpress.com/e/_EvQ... or https://s.click.aliexpress.com/e/_Ew4...
3018 Props - https://s.click.aliexpress.com/e/_Euo... or https://s.click.aliexpress.com/e/_EwY...

🔋 Recommended batteries:
Battery Molicel P30B - https://s.click.aliexpress.com/e/_EyH...
Battery EVA 30PL (best for drone) - https://s.click.aliexpress.com/e/_EIT...
Battery Ampace JP30 (up to 140A) - https://s.click.aliexpress.com/e/_EQE...

Additional:
velcro tape (used as batteries strap) - https://s.click.aliexpress.com/e/_EIY...
bt2.0 Connectors - https://s.click.aliexpress.com/e/_Euh...
20/22AWG wires (recommended 20AWG) - https://s.click.aliexpress.com/e/_EIM...

If you’re interested in long-range, endurance, or Li-ion FPV builds, this experiment is for you.

👍 Like, subscribe, and share if you enjoy FPV experiments!

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