Description The HDZero Halo 4in1 70A ESC (AM32) unleashes uncompromising power and precision with a split-board architecture, copper bus bar, and 8-layer 3oz PCB that maximize burst throttle response while minimizing voltage drop under extreme loads. Built for elite racing and freestyle pilots, it delivers continuous 70A per motor with 100A burst capability, clean power isolation, and rugged conformal coating for relentless durability. 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: AM32 2.18 / BLHeli32 32.10 Target: HDZ_ESC_1R0_F421 Input Voltage: DC 9V–40V (3S–8S) Input Signal: DShot150/300/600/1200/2400, MultiShot, OneShot Output Voltage: VBAT (to power FC) Max Current: 70A x4 Continuous / 100A x4 Burst Current Sensor: Scale 170, Offset 0 Dimensions: 33x43mm Mounting: 20x20mm, Φ4mm (for 3mm rubber grommets) Weight: 13.4g Dual-Sided Solder Pads: Yes Package Includes 1 x HDZero Halo 4in1 70A ESC (AM32)
