Engineered by HDZero – leaders in high-performance FPV technology, the Halo 4in1 70A ESC is designed for pilots who demand both power and reliability. Whether you're pushing limits in drone racing or freestyle, this ESC delivers unmatched durability and throttle response. Package Includes: 1x ESC At the heart of the Halo ESC is a split-board architecture, separating the control and power stages for improved thermal performance and crash resilience. An integrated copper bar and 3oz copper across 8 PCB layers ensure rapid current flow and superior heat dissipation—specially optimized to sharpen burst throttle response and minimize voltage drop during aggressive maneuvers. With continuous 70A output per motor channel (for up to 30 seconds) and 100A burst capability, the Halo ESC powers through demanding flights while protecting critical electronics with clean power delivery. Voltage spikes are isolated from the MCU and drivers. This vital protection helps prevent MCU brownouts or lockups—common culprits behind burnt motors, failed MOSFETs, and critical flight failures. Tested to the limits, this ESC was built to outlast others. Every detail, from the conformal coating to protect against moisture and dust, to the dual-sided solder pads for flexible builds, reflects HDZero's commitment to durability and field reliability. Available in BLHeli32 or AM32 firmware versions, the Halo ESC lets you choose the experience that best fits your style. Features: Engineered by HDZero – leaders in high-performance FPV technology Built for maximum performance and durability in race and freestyle drones Split-board design with copper bus bar for improved burst throttle response 8-layer PCB with 3oz copper per layer for superior thermal and current handling 24 MOSFETS (6 per motor) Continuous 70A per motor / 100A burst (3 seconds) Clean power delivery minimizes voltage spikes and reduces failure risks Supports 3S to 8S batteries (9V – 40V input) Telemetry support Firmware options: BLHeli32 or AM32 Conformal coating for moisture, dust, and corrosion protection Dual-sided solder pads for flexible installation 20x20mm mounting pattern, 33x43mm size, 13.4g weight Specifications: Model HDZero Halo 4in1 70A ESC MCU AT32F421 (120MHz) Firmware - BLHeli 32.10 - AM32 2.18 Target: HDZ_ESC_1R0_F421 Input Voltage DC 9V – 40V (3S – 8S) Telemetry Supported Input signal Dshot 150/300/600/1200/2400, MultiShot, OneShot Output Voltage VBAT (to power the FC) Max Current Over 70Ax4 (Continuous) / 100Ax4 (Burst) Current Sensor Scale = 170, offset = 0 Dual-sided solder pads YES Dimensions 33x43mm Mounting 20x20mm, Φ4mm for 3mm Rubber Grommets Weight 13.4g
