1) Q: ESC is powering up but no motor response or tone:
A1: Please supply sufficient amount of voltage for the ESC. 3S or 4S recommended. A2: Person may
have a defective or damaged ESC. Please check case by case for damaged ESCs (like loose capacitors,
Melted mosfets, prop strikes, etc.).
2) Q: Does it support DSHOT?
A: The EMAX Bullet 20A/30A supports DSHOT150, DSHOT300, DSHOT600.
3) Q: What protocols can the Bullet 20A/30A support?
A: Oneshot42, Oneshot125, Multishot, and Dshot are all supported.
4) Mention the bullet 20A/30A uses “high-quality Japanese ceramic capacitors, 3oz of High-TG PCB
5) Q: What is the Bullet 20A/30A ESC input voltage?
A: EMAX Bullet 20A/30A ESC can handle 2S-4S (7.4v-16.8v).
6) Mention the bullet 20A/30A uses an aluminum heatsink to cover majority of the ESC face
to protect against prop strikes and maximize heat dissipation.
7) Q: My drone fell out of the sky mid-flight. Assuming everything else is ok, what could cause
this failure in ESC?
A: Excessive heat that is not circulated properly can build up on the ESC components. If past 183
°C or 361 °F, the mosfets can melt off from the PCB board. When this occurs, electrical short and
ultimately, the failure of the unit will be imminent. Use factory supplied heat shrink with no wrap
or tape covering the ESC for exposed cooling.
8) Q: What is the burst rating (or peak amp draw) for the EMAX Bullet 20A/30A?
A1: For Bullet 20A, continuous amp rating is 20A and the maximum burst current is up to 30A.
A2: For Bullet 30A, continuous amp rating is 30A and the maximum burst current is up to 35A.
9) What is the weight of the EMAX Bullet 20A/30A ESC? A: 3.5 grams without wires.
10) Q: How small is the EMAX Bullet 20A/30A ESC?
A: Slightly smaller than a US quarter coin, the Bullet 20A/30A ESC is 11.9mm x 19.6mm. It is the
world’s smallest 20A/30A BLHeli_S ESC capable of DSHOT.
11) Q: What type of firmware does the Bullet 20A/30A use?