Xrotor 65A 4-in-1 Lite BLS-RTF 4–6S is a four-channel ESC board for compact FPV aircraft using 4–6S LiPo batteries. The official Hobbywing specification identifies the XROTOR-65A-4in1-Lite-AT/BLS-RTF family, with 65A per ESC channel in the product series and a 4S–6S input range of 12–25.4V.
The board has no onboard BEC, so the flight controller, receiver and other low-voltage electronics need a suitable external power design. The BLS version uses BLHeli-s/Bluejay firmware; the AT version uses self-developed 32-bit firmware. The official specification lists an ATF421 MCU, an 8-pin SH1.0 configuration port, current sensing, 35V 680μF capacitor, 12AWG 150mm power wire, 30.5×30.5mm mounting-hole spacing, M3 mounting holes, and a 44×42×5.5mm board size. Bidirectional DShot is supported on the AT version and not on BLHeli-s according to the official sheet. Confirm firmware, motor direction, cooling, battery connector and external BEC wiring before powering the board.
For a single-channel comparison, review the XROTOR Pro 60A. Compare the XROTOR 4-IN-1 G2 65A and browse Reachsky Drone ESCs for other controller formats.
Xrotor 65A 4-in-1 FAQs
What battery range is listed?
The official specification lists 4–6S LiPo or 12–25.4V input.
Does the board include a BEC?
No. The official sheet lists no onboard BEC.
Are BLS and AT versions identical?
No. They use different firmware families; confirm the selected version before setup and firmware work.
