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The 30A-S BLHeli_S ESC is a high-performance speed controller for drones and RC aircraft that supports 2-4S LiPo batteries. The page describes a smooth throttle response and precise control.
The specification list gives 30A continuous and 35A burst (up to 10 s), BLHeli-S firmware and DShot150/300/600 and Oneshot signals. It has exposed PCB solder joints so it can be soldered directly to the motor wire, and the page says it is small and light. It showed in stock at Rs 549 (SKU RS5017).
30A continuous, 35A burst: burst for up to 10 s.
BLHeli-S firmware: as listed.
DShot150, 300, 600 and Oneshot: as listed.
High-speed drive IC: for smooth start and quick response.
Supports high-KV motors: start quickly.
Direct solder pads: solder to the motor wire.
An electronic speed controller (ESC) converts the throttle signal from the flight controller into the three-phase power that a brushless motor needs. It switches battery current through MOSFETs at high speed, so the motor turns at the speed that the pilot or autopilot asks for. The continuous current rating shows how much current the ESC can carry all the time, and the burst rating shows what it can survive for a few seconds.
Match the ESC to the rest of the power system. The battery cell count must fall inside the listed range, the continuous current must be higher than what your motor and propeller draw at full throttle, and the signal protocol (for example PWM, Oneshot, Multishot or DShot) must be supported by your flight controller. An ESC marked OPTO has no built-in BEC, so the receiver and flight controller need power from another source. An ESC with a BEC can supply a regulated voltage, usually 5V, to small electronics.
Install and test carefully. Solder joints must be clean and strong, the motor wires should be kept short and tidy, and the ESC needs airflow because current makes heat. Calibrate the throttle range if the ESC needs it, check the motor direction with the propellers removed, and never connect a battery with the propellers fitted while you are working on the wiring. Use a battery with a cell count and connector that suit the ESC, and check for a heat problem after a short test hover.
FPV drones
RC aircraft
2-4S builds
High-KV motors
Compact quads
The page marks it as an OPTO ESC, so it has no BEC. Solder the motor wires directly to the exposed pads.
It supports DShot150, DShot300, DShot600 and Oneshot input.
Input voltage: 2-4S LiPo
Continuous current: 30A
Burst current: 35A (up to 10 s)
Firmware: BLHeli-S
Signals: DShot150/300/600, Oneshot
1 x BLHeli_S 30A ESC
Builders who want a low-cost 30A BLHeli_S OPTO ESC.
30A continuous, 35A burst for up to 10 s.
2-4S LiPo.
DShot150/300/600 and Oneshot.
No, it is an OPTO ESC.
| Brand | Generic |
|---|---|
| Continuous Current | 30.000000 A |
| Firmware | BLHeli-S |
| Input Voltage | 2-4S LiPo |
| Supported Protocols | DSHOT150/300/600, OneShot |
| Selling unit | PCS |
