SeaKing 300A HV V4
SeaKing300AHV V4
14S High Voltage, High Power ESC
Exceptional Reliability and Durability
continuous current of
300A
The ESC supports up to
14S LiPo

Delivering high output power with linear control.
Designed with an all metal casing and radiator.
Handling high load applications under extreme
conditions with smooth and precise control.

14S High Voltage, High Power ESC
Exceptional Reliability and Durability
continuous current of
300A
The ESC supports up to
14S LiPo

Delivering high output power with linear control.
Designed with an all metal casing and radiator.
Handling high load applications under extreme
conditions with smooth and precise control.

IP67 fully waterproof design
  • With an IP67 protection rating,
    this ESC boasts outstanding waterproof and dustproof capabilities.
    It can be used immediately without any additional waterproofing treatment.
Note: The IP67 rating ensures protection against splashes, water, and dust under normal use.
It has been tested under controlled lab conditions according to
GB/T 4208-2017 (domestic) and IEC 60529 (international) standards.
However, the protection is not permanent and may decrease with wear and aging.
Built-in Bluetooth
for Connecting
the Mobile APP Directly
  • The ESC features a built-in Bluetooth module,
  • allowing easy connection to a mobile app for parameter settings,
  • data reading, and firmware upgrades—all without the need for additional devices,
  • making it incredibly user-friendly.
Built-in Data Logging
for Performance Monitoring
  • Equipped with a data logging module,
  • this ESC can record the latest 10 minutes of operation.
  • By connecting to the mobile app,
  • you can view historical data (in graph format) post-operation,
  • allowing easy monitoring of both ESC and motor performance.

Note:Bluetooth transmission is effective up to about 5 meters.

Super Built-inBEC
  • The built-in BEC
    delivers up to 28A of current
  • with switchable output voltages of
    6V7.4V8.4V
  • It easily powers high-torque
    and high-voltage servos,
    offering seamless and responsive control.
Built-in Spark-proof Design
  • The ESC includes a spark-proof circuit,
  • protecting battery plugs from damage when using higher voltages (6-14S).
  • This also prevents injuries from strong electrical sparks(e.g., to fingers).
Extra large built-in
capacitor pack
  • This ESC features a built-in 4080uF super capacitor pack,
  • teliminating the need for external capacitors in 99% of applications.
  • In addition, the ESC is equipped with a capacitor temperature protection function,
  • ensuring that the capacitors remain in a safe working condition,
  • even during intense usag
Freewheelingfunction
  • When enabled, the Freewheeling function reduces ESC temperature,
  • improves deceleration when the throttle is released, and enhances steering control during turns.
When Freewheeling function is enabled,

the boat decelerates faster when the throttle is released

When Freewheeling function is disabled,

the boat decelerates slower when the throttle is released

AUX External Control
Channel for Real-time
Parameter Adjustment
  • By connecting the yellow signal wire to an unused recelver channel,
  • you can adjust ESC parameters (like reverse thrust) in real-time using the remote control,
  • adding convenience to parameter management.
Swipe left to view all

Note:The actual function of the yellow wire corresponds to the AUX CH Function settings in the parameter table.

Dual programming method
  • In addition to supporting the HW Link App via Bluetooth for parameter configuration,
  • this ESC also provides flexibility through an independent programming port.
  • You can use an LCD or LED programming box to adjust parameters,
  • offering users more control and convenience when fine-tuning their ESC settings.
HW Link App
Multifunction LCD Program Box
LED Program Box
Versatile programmable parameters
  • With 11 programmable parameters, the ESC is designed to meet competitive racing needs,
  • offering a wider and more detailed range of settings.
Swipe left to view all
Product Name
SEAKING 300A HV V4
Product Number
  30301202
Type
Brushed/Brushless Brushless
Sensored/Sensorless Sensorless
Waterproof Waterproof
Specifications
Cont./Peak Current 300A/1600A
Input Voltage 5-14S Lipo
BEC Output Switch Mode 6V/7.4V/8.4V @8A
Wires & Connectors
Input Wires Black-8AWG-200mm*1 Red-8AWG-200mm*1
Output Wires No
Input Connectors No
Output Connectors 8.0mm Female
ESC Programing via
LED Program Box Supported
LCD G2 Program Box Supported
LCD PRO Supported
OTA Programmer Supported
HW LINK APP Supported (Built-in Bluetooth)
Data Recording
Extreme value Supported
Real-time Data Supported
Built-in Historical Data (Graph) Supported
External OTA Historical Data (Graph) Supported
Firmware
Firmware Upgrade Supported
Size & Weight
Size 94*58.8*43mm
Weight 443g (Included wires)
Applications
Boat Applicable ≤180CM
Support

Manuals & Documents

Manuals

Software Download

FAQ

LED Program Box_General
LED Program Box_General

LED Program Box_General

Part Number: 30501003
Size: 88x58x14mm（LxWxH）
Applications:
Platinum V1/V2 series & FlyFun V5 SkyWalker V2
Series of brushless aircraft ESCs
XeRun series (most), EzRun series
& QuicRun series of brushless car ESCs
SeaKing series of brushless boat ESCs

+
Multifunction LCD Program Box
Multifunction LCD Program Box

Multifunction LCD Program Box

Part Number: 30502001
Size: 91x51x17mm (LxWxH)
Applications: Platinum series of
brushless aircraft ESCs, XeRun
series & EzRun series of brushless
car ESCs, SeaKing Pro series of
brushless boat ESCs

+
LCD Program Box Pro
LCD Program Box Pro

NEW

LCD Program Box Pro

Product Number: 30502002
Input Voltage: DC 5V~12.6V
Application: brushless ESC
Weight: 85g
Display:LCD

+
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4
Hobbywing SeaKing 300A HV V4

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SeaKing 300A HV V4
Overview Specifications Support Accessories Detail
SeaKing300AHV V4
14S High Voltage, High Power ESC
Exceptional Reliability and Durability
continuous current of
300A
The ESC supports up to
14S LiPo

Delivering high output power with linear control.
Designed with an all metal casing and radiator.
Handling high load applications under extreme
conditions with smooth and precise control.

14S High Voltage, High Power ESC
Exceptional Reliability and Durability
continuous current of
300A
The ESC supports up to
14S LiPo

Delivering high output power with linear control.
Designed with an all metal casing and radiator.
Handling high load applications under extreme
conditions with smooth and precise control.

IP67 fully waterproof design
  • With an IP67 protection rating,
    this ESC boasts outstanding waterproof and dustproof capabilities.
    It can be used immediately without any additional waterproofing treatment.
Note: The IP67 rating ensures protection against splashes, water, and dust under normal use.
It has been tested under controlled lab conditions according to
GB/T 4208-2017 (domestic) and IEC 60529 (international) standards.
However, the protection is not permanent and may decrease with wear and aging.
Built-in Bluetooth
for Connecting
the Mobile APP Directly
  • The ESC features a built-in Bluetooth module,
  • allowing easy connection to a mobile app for parameter settings,
  • data reading, and firmware upgrades—all without the need for additional devices,
  • making it incredibly user-friendly.
Built-in Data Logging
for Performance Monitoring
  • Equipped with a data logging module,
  • this ESC can record the latest 10 minutes of operation.
  • By connecting to the mobile app,
  • you can view historical data (in graph format) post-operation,
  • allowing easy monitoring of both ESC and motor performance.

Note:Bluetooth transmission is effective up to about 5 meters.

Super Built-inBEC
  • The built-in BEC
    delivers up to 28A of current
  • with switchable output voltages of
    6V7.4V8.4V
  • It easily powers high-torque
    and high-voltage servos,
    offering seamless and responsive control.
Built-in Spark-proof Design
  • The ESC includes a spark-proof circuit,
  • protecting battery plugs from damage when using higher voltages (6-14S).
  • This also prevents injuries from strong electrical sparks(e.g., to fingers).
Extra large built-in
capacitor pack
  • This ESC features a built-in 4080uF super capacitor pack,
  • teliminating the need for external capacitors in 99% of applications.
  • In addition, the ESC is equipped with a capacitor temperature protection function,
  • ensuring that the capacitors remain in a safe working condition,
  • even during intense usag
Freewheelingfunction
  • When enabled, the Freewheeling function reduces ESC temperature,
  • improves deceleration when the throttle is released, and enhances steering control during turns.
When Freewheeling function is enabled,

the boat decelerates faster when the throttle is released

When Freewheeling function is disabled,

the boat decelerates slower when the throttle is released

AUX External Control
Channel for Real-time
Parameter Adjustment
  • By connecting the yellow signal wire to an unused recelver channel,
  • you can adjust ESC parameters (like reverse thrust) in real-time using the remote control,
  • adding convenience to parameter management.
Swipe left to view all

Note:The actual function of the yellow wire corresponds to the AUX CH Function settings in the parameter table.

Dual programming method
  • In addition to supporting the HW Link App via Bluetooth for parameter configuration,
  • this ESC also provides flexibility through an independent programming port.
  • You can use an LCD or LED programming box to adjust parameters,
  • offering users more control and convenience when fine-tuning their ESC settings.
HW Link App
Multifunction LCD Program Box
LED Program Box
Versatile programmable parameters
  • With 11 programmable parameters, the ESC is designed to meet competitive racing needs,
  • offering a wider and more detailed range of settings.
Swipe left to view all
Product Name
SEAKING 300A HV V4
Product Number
  30301202
Type
Brushed/Brushless Brushless
Sensored/Sensorless Sensorless
Waterproof Waterproof
Specifications
Cont./Peak Current 300A/1600A
Input Voltage 5-14S Lipo
BEC Output Switch Mode 6V/7.4V/8.4V @8A
Wires & Connectors
Input Wires Black-8AWG-200mm*1 Red-8AWG-200mm*1
Output Wires No
Input Connectors No
Output Connectors 8.0mm Female
ESC Programing via
LED Program Box Supported
LCD G2 Program Box Supported
LCD PRO Supported
OTA Programmer Supported
HW LINK APP Supported (Built-in Bluetooth)
Data Recording
Extreme value Supported
Real-time Data Supported
Built-in Historical Data (Graph) Supported
External OTA Historical Data (Graph) Supported
Firmware
Firmware Upgrade Supported
Size & Weight
Size 94*58.8*43mm
Weight 443g (Included wires)
Applications
Boat Applicable ≤180CM
Support

Manuals & Documents

Manuals

Software Download

FAQ

LED Program Box_General
LED Program Box_General

Part Number: 30501003
Size: 88x58x14mm（LxWxH）
Applications:
Platinum V1/V2 series & FlyFun V5 SkyWalker V2
Series of brushless aircraft ESCs
XeRun series (most), EzRun series
& QuicRun series of brushless car ESCs
SeaKing series of brushless boat ESCs
Multifunction LCD Program Box
Multifunction LCD Program Box

Part Number: 30502001
Size: 91x51x17mm (LxWxH)
Applications: Platinum series of
brushless aircraft ESCs, XeRun
series & EzRun series of brushless
car ESCs, SeaKing Pro series of
brushless boat ESCs
LCD Program Box Pro
LCD Program Box Pro

Product Number: 30502002
Input Voltage: DC 5V~12.6V
Application: brushless ESC
Weight: 85g
Display:LCD
Top

Products Center

Service and Support

News Center

About

Global Partners

Welcome to Brushless
System Trends

Privacy Policy | 粤ICP备14009225号-1  |  ©2025 Hobbywing Technology CO., LTD.. All rights reserved