Hobbywing SEAKING 300A HV V4 ESC (5-14S LiPo) IP67 Waterproof, Bluetooth HW LINK, Data Logging, for 180cm RC Boat
Hobbywing SEAKING 300A HV V4 ESC (5-14S LiPo) IP67 Waterproof, Bluetooth HW LINK, Data Logging, for 180cm RC Boat
Hobbywing
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Overview
The Hobbywing SEAKING 300A HV V4 is a sensorless brushless boat ESC (electronic speed controller) designed for high-voltage RC boat power systems. It supports 5-14S LiPo input, includes built-in Bluetooth for HW LINK app setup/updates, and provides data logging for performance monitoring.
Key Features
- High-voltage, high-power ESC: continuous current of 300A; supports up to 14S LiPo.
- All metal casing and radiator; designed for high-load applications with smooth, precise control.
- IP67 protection rating (waterproof and dustproof); can be used immediately without additional waterproofing treatment.
- Built-in Bluetooth for connecting the mobile app directly for parameter settings, data reading, and firmware upgrades.
- Built-in data logging: records the latest 10 minutes of operation; view historical data (graph format) in the app after operation.
- Bluetooth transmission effective up to about 5 meters.
- Switchable BEC output voltages: 6V / 7.4V / 8.4V; BEC current is stated as up to 28A.
- Built-in spark-proof circuit to help protect battery plugs from damage when using higher voltages (6-14S) and reduce strong electrical sparks.
- Extra large built-in capacitor pack: 4080uF super capacitor pack; eliminates the need for external capacitors in 99% of applications.
- Capacitor temperature protection function to help keep capacitors in a safe working condition during intense usage.
- Freewheeling function (when enabled): reduces ESC temperature, improves deceleration when throttle is released, and enhances steering control during turns.
- AUX external control channel for real-time parameter adjustment via the yellow signal wire (function follows AUX CH Function setting).
- Dual programming method: HW LINK app via Bluetooth, plus independent programming port for an LCD or LED programming box.
Specifications
| Product name | SEAKING 300A HV V4 |
| Product number | 30301202 |
| Motor type | Brushless |
| Sensor type | Sensorless |
| Waterproof | Waterproof (IP67 stated) |
| Continuous / peak current | 300A / 1600A |
| Input voltage | 5-14S LiPo |
| BEC output (switch mode) | 6V / 7.4V / 8.4V |
| BEC current | Up to 28A |
| Input wires | Black-8AWG-200mm*1; Red-8AWG-200mm*1 |
| Output wires | No |
| Input connectors | No |
| Output connectors | 8.0mm Female |
| Programming method | HW LINK APP |
| ESC programming support | LED Program Box; LCD G2 Program Box; LCD PRO; OTA Programmer; HW LINK APP (built-in Bluetooth) |
| Data recording | Extreme value; Real-time Data; Built-in Historical Data (Graph); External OTA Historical Data (Graph) |
| Firmware upgrade | Supported |
| Size (w/o water cooling pipe and mounting hole) | 94 x 58.8 x 43mm |
| Weight | 443g (w/ input wires) |
| Inner / outer diameter of water cooling pipe | 3.5 / 6.0mm |
| Boat applicable | Length <= 180cm |
Programmable Items (11)
| 1. Running Mode | Forward Only; Forward and Reverse |
| 2. Max.Reverse Force | 25%; 50%; 75%; 100% |
| 3. LiPo Cells | Auto; 5S; 6S; 7S; 8S; 9S; 10S; 12S; 14S |
| 4. Cutoff Voltage | Disabled; 2.6V/Cell; 2.8V/Cell; 3.0V/Cell; 3.1V/Cell; 3.2V/Cell; 3.3V/Cell; 3.4V/Cell; 3.6V/Cell |
| 5. BEC Voltage | 6.0V; 7.4V; 8.4V |
| 6. Motor Rotation | CCW; CW |
| 7. Punch | Level 1; Level 2; Level 3; Level 4; Level 5; Level 6; Level 7 |
| 8. Freewheeling | Disabled; Enabled |
| 9. Drag Brake Force | Disabled; 10%; 25%; 50%; 75%; 100% |
| 10. Timing | 10.0°; 12.5°; 15.0°; 17.5°; 20.0°; 22.5°; 25.0°; 27.5°; 30.0° |
| 11. AUX CH Function | 2; 7; 9 |
What's Included
- (1) HOBBYWING SEAKING 300A ESC
- (1) Manual
Customer service: https://rcdrone.top/ or support@rcdrone.top
Applications
- RC boat setups (boat length <= 180cm stated)
Troubleshooting
| Troubles | Possible Causes | Solution |
|---|---|---|
| The light does not turn on after power-up, the motor does not start. | 1. The battery voltage is not output to the ESC; 2. The switch is damaged. | 1. Check the battery, and whether the connection between battery and esc is good and whether the plug is soldered well; 2. Replace the switch. |
| The motor does not start after power-up, with a "beep-beep-, beep-beep-" warning tone accompanied by a flashing red light(approximately 0.5 seconds for each set of two-tone intervals). | The battery pack voltage is not within the range of support. | Check the battery voltage or change the battery for testing. |
| After power on, the red light flashes quickly. | 1. The throttle signal is not detected by the ESC; 2. The neutral point of the ESC is not calibrated correctly. | 1. Check if the throttle wire is plugged into the correct channel. Check if your transmitter is turned on. Check if the receiver ok. 2. Recalibrate the throttle travel. |
| The car is going in the reversed direction when the forward throttle is applied. | The transmission on the vehicle is different | Set the parameter item "Motor Rotation" to the opposite direction. |
| The motor suddenly stopped or significantly reduced the output in running. | 1. Possible interference; 2. The ESC enters into low-voltage protection state; 3. The ESC enters into overheat protection state. | 1. Check the cause of the interference in the receiver and check the battery level of the transmitter; 2. Replace the battery if red light keeps flashing; 3. The green light continues to flash for temperature protection, please continue to use after the ESC or motor temperature is reduced (it is recommended to reduce the load on the vehicle). |
| The motor stuttered and unable to start. | 1. The motor is connected incorrectly; 2. ESC fault (partial power MOSFET burned out). | 1. Check the plugs and the solder points and whether the sequence of A, B and C wires is correct.; 2. Contact the dealer to handle the repair. |
| Going forward normally, but not reverse. | 1. The neutral point of the remote control throttle channel deviates from the brake area; 2. The parameter item "Running Mode" is set incorrectly; 3. The ESC is damaged. | 1. Recalibrate the esc,when the throttle trigger is at the neutral point, the esc lights are off; 2. Set the "Running Mode" to "Forward/Reverse with Brake"; 3. Contact the distributor to handle the repair. |
| The throttle travel setting could not be completed. | The ESC did not receive the correct throttle signal. | 1. Check whether the throttle cable is correctly connected to the receiver. 2. If the servo works normally,you can connect the throttle cable of esc to the steering channel to have a test, or change the transmitter/receiver system for test directly. |
Details
SEAKING 300A HV V4 supports 5–14S LiPo, a selectable 6/7.4/8.4V 8A BEC, and HW LINK app programming.
The Seaking 300A HV V4 offers adjustable running mode, LiPo cell selection, cutoff voltage, BEC voltage, punch, drag brake, and timing settings.
The Seaking 300A HV V4 ESC troubleshooting guide lists common startup, signal, and protection issues with likely causes and fixes.
The Hobbywing SeaKing 300A HV V4 boat ESC mounts neatly inside the hull with a compact layout for clean wiring.
The Seaking 300A HV V4 boat ESC is rated for 300A continuous current and supports up to 14S LiPo setups.
The Hobbywing Seaking 300A HV V4 boat ESC features an IP67-rated waterproof and dustproof housing for marine use.
Built-in Bluetooth lets the SEAKING 300A HV V4 connect directly to the Hobbywing mobile app for parameter settings, data logging, and firmware updates.
Built-in data logging records up to 10 minutes of run data and lets you review ESC and motor graphs in the mobile app, with Bluetooth range noted at about 5 meters.
The Seaking HV V4’s built-in BEC is rated up to 28A and offers switchable 6V, 7.4V, or 8.4V output for powering servos.
The Seaking 300A HV V4 ESC includes a built-in spark-proof circuit to help protect battery plugs when connecting high-voltage packs (6–14S).
The SEAKING 300A HV V4 includes a built-in 4080uF super capacitor pack to help reduce the need for an external capacitor module.
The SEAKING 300A HV V4’s Freewheeling function is designed to reduce ESC temperature and improve deceleration and steering control when the throttle is released.
Connecting the yellow signal wire to an unused receiver AUX channel allows real-time ESC parameter adjustments from the remote control.
The SeaKing 300A HV V4 supports tuning through the HW Link app via Bluetooth or an independent programming port for LCD/LED program boxes.
The SeaKing 300A HV V4 offers 11 programmable parameters, including running mode, LiPo cell count, cutoff voltage, BEC voltage, and timing.
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