iFlight Blitz E55S 4-in-1 ESC (2–6S)

The iFlight BLITZ E55S is a high-output 55A 4-in-1 ESC designed for 5-inch freestyle builds and aggressive 7-inch quads. Running on 2–6S LiPo input, it provides the required headroom for high-kV motors and heavy payloads. Built to standard 30.5x30.5mm stack dimensions, it integrates effortlessly with most full-size flight controllers and features large, accessible solder pads for heavy-gauge motor wiring.

Key features

• Sustains 55A continuous current per channel, with burst protection up to 65A for high-throttle punch-outs.
• Utilises an EFM8BB21 MCU running BLHeli_S firmware, fully compatible with Bluejay for bidirectional DShot and RPM filtering.
• Equipped with an onboard current sensor (Scale: 200) for real-time power consumption tracking via OSD.
• Features an integrated aluminium heatsink shell to dissipate thermal load rapidly during extended flights.

Specifications

• Continuous Current: 55A
• Burst Current: 65A
• Input Voltage: 2-6S LiPo (8.4V–25.2V)
• MCU: EFM8BB21
• Firmware: BLHeli_S (Bluejay supported)
• Current Sensor: Yes (Scale 200)
• Mounting: 30.5x30.5mm (3mm hole diameter)
• Weight: 14.7g

This ESC is an ideal match for the iFlight BLITZ F722 flight controller, offering a robust drop-in solution for custom 30-size stacks.