HobbyWing SEAKING V4 / 120A Brushless Marine ESC (2-6S)

Hobbywing Seaking 120A V4 ESC delivers a smooth, reliable power system for 1/8 and 1/10 marine RC setups, combining a fully waterproof design with efficient 120‑amp performance. Its refined throttle control, built‑in BEC, and robust thermal protection make it ideal for high‑demand boats, while the updated V4 architecture improves stability and responsiveness under heavy load. A dependable choice for consistent speed runs and everyday lake bashing.

FEATURES:

• IP67 Waterproof Design — Fully waterproof and dust‑resistant for direct use in marine environments. 
• 120A Continuous / 500A Peak Current — High‑output brushless ESC performance for demanding RC boats. 
• 2–6S LiPo Compatibility — Supports a wide voltage range for various hull sizes and power setups. 
• Adjustable High‑Power BEC — Switch‑mode BEC with selectable 6V / 7.4V / 8.4V @ 8A for high‑torque and high‑voltage servos. 
• Water‑Cooling System — Integrated water‑cooling plate with 3.0/5.5 mm pipe diameter for stable temps under load. 
• Freewheeling Function — Reduces ESC temperature, improves deceleration, and enhances turning control. 
• Advanced Protection Suite — Low‑voltage cutoff, over‑temperature protection, signal‑loss protection, and capacitor overheat protection. 
• Data Logging & Telemetry — Real‑time and historical data via HW LINK app when paired with OTA Bluetooth module. 
• Firmware Upgrade Support — Update ESC features through HW LINK or USB LINK tools. 
• Multiple Programming Methods — LED Program Card, LCD Program Box G2/Pro, and OTA wireless programming. 
• Compact Marine‑Optimized Form Factor — 64.7 × 36.3 × 22.5 mm; designed to fit narrow hulls up to ~100 cm.
  

SPECIFICATIONS:

• Part#: 30302363
• Continuous / Peak Current: 120A / 500A 
• Input Voltage: 2–6S LiPo 
• BEC Output: 6V / 7.4V / 8.4V @ 8A (switch‑mode) 
• Programming Methods: LED Program Card, LCD G2, LCD Pro, OTA Bluetooth module 
• Dimensions: 64.7 × 36.3 × 22.5 mm (without water‑cooling pipe) 
• Weight: 123.5 g (with wires & connectors) 
• Waterproof Rating: IP67 waterproof design 
• Water‑Cooling Pipe Diameter: 3.0 mm (inner) / 5.5 mm (outer) 
• Motor Compatibility: Sensorless brushless motors 
• Data Logging: Real‑time & historical data via HW LINK app (requires OTA module) 
• Firmware Upgrade: Supported via HW LINK or USB LINK tools 
• Protection Features: Low‑voltage cutoff, over‑temperature, signal‑loss, overload, capacitor overheat protection 
• Freewheeling Function: Lower temps, faster deceleration, improved turning control 
• Boat Size Compatibility: Suitable for hulls up to ~40 in

HELPFUL LINKS:

• ESC Manual

INCLUDES:

(1) HobbyWing SEAKING V4 / 120A Brushless Marine ESC
(1) User Manual