HDZero Halo 4in1 70A ESC (AM32)

The Halo 4‑in‑1 70A ESC by HDZero is a high-performance electronic speed controller engineered for 3–8S FPV builds requiring exceptional durability and throttle precision. Built on an 8-layer PCB with 3oz copper traces and featuring a split-board architecture, this ESC delivers superior thermal efficiency and burst throttle response by isolating the control drivers from the high-current stages  .

This ESC is available in both AM32 and BLHeli_32 firmware, offering 70 A continuous per motor output and up to 100 A bursts for 3 seconds—making it ideal for aggressive freestyle and responsive racing builds  . The conformal-coated build provides protection from moisture, dust, and corrosion, enhancing field reliability  .

Compact yet durable, the ESC measures approximately 33 × 43 mm, supports the standard 20×20 mm mounting layout, and weighs just 13.4 g  . It supports telemetry, common input protocols like DShot and OneShot, and features dual-sided motor pads for layout flexibility  .

Whether building a 4-inch freestyle drone or a 7-inch long-range rig, the Halo 4‑in‑1 70A ESC delivers unmatched power, reliability, and efficiency.

Rigorously tested, view the white paper detailing HALO ESC's performance: https://youtu.be/oLena6vl9Vk

Key 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