1. Introduction
The DH Python Series Brushless Electronic Speed Controller (ESC) is a high-performance, 32-bit microprocessor-controlled device designed for RC boats and underwater thrusters. It offers precise control, high reliability, and efficient power management for various marine applications. This manual provides essential information for the proper setup, operation, and maintenance of your Python Series ESC.

2. Features
- Advanced MOSFET Technology: Utilizes a new generation of MOSFETs for low heat generation, instant large current handling, and high reliability.
- High-Performance Microprocessor: Equipped with a powerful 32-bit microprocessor for enhanced computing ability, faster response, smoother startup, and accurate throttle linearity.
- Waterproof Design: The ESC is waterproof and glued, featuring a flat water-cooling design for efficient heat dissipation.
- Dual Running Modes: Supports two operational modes: "Forward Only" and "Forward and Backward" for diverse applications.
- Energy Efficiency: Incorporates synchronous rectification to significantly reduce heating, leading to higher driving efficiency and energy savings.
- Optimized Circuit Design: Control board and power board are designed separately, improving reliability and anti-interference capabilities, especially under high power conditions.
- Powerful SBEC: Built-in upgraded high-power switching BEC, adjustable between 5V/6V, with a continuous output current of 8A and burst current up to 15A, capable of driving stronger servos and external devices.
- Multiple Protections: Includes Start-up Protection, Over-Heat Protection, Low-Voltage Cutoff Protection, Phase Loss Protection, and Signal Loss Protection.





3. Specifications
The following table details the specifications for various models within the DH Python Series ESC line:

| Type | PN#Model | Cont./Burst Current(A) | Battery cell NiXX\Lipo | Weight(g) | BEC Output | Size(mm) L*W*H | User Program |
|---|---|---|---|---|---|---|---|
| Python 20A SBEC | 7020210 | 20\30A | 5-12NC\2-4Lipo | 30 | 5.5V/4A | 62*30*9 | Yes |
| Python 30A SBEC | 7030210 | 30\40A | 5-12NC\2-4Lipo | 31 | 5.5V/4A | 62*30*9 | Yes |
| Python 40A SBEC | 7040210 | 40\55A | 5-12NC\2-4Lipo | 40 | 5V/6V 4A | 75*32*9 | Yes |
| Python 50A SBEC | 7050210 | 50\65A | 5-12NC\2-4Lipo | 41 | 5V/6V 4A | 75*32*9 | Yes |
| Python 60A SBEC | 7060210 | 60\80A | 5-18NC\2-6Lipo | 70 | 5V/6V 8A | 72*40*12.5 | Yes |
| Python 80A SBEC | 7080210 | 80\100A | 5-18NC\2-6Lipo | 90 | 5V/6V 8A | 96*43.5*13 | Yes |
| Python 100A SBEC | 7100210 | 100\120A | 5-18NC\2-6Lipo | 100 | 5V/6V 8A | 96*43.5*13 | Yes |
General Product Properties:
- Material: Composite Material
- For Vehicle Type: Boats
- RC Parts & Accs: Speed Controllers
- Recommend Age: 14+ years
- Certification: CE
- Is Electric: No Battery (refers to the ESC itself not containing a battery)
- Is Batteries Included: No
- Quantity: 1 pcs
4. Setup
Proper setup is crucial for the safe and efficient operation of your ESC. Follow these general guidelines:
- Motor Connection: Connect the three motor wires to the three output wires of the ESC. These typically use 3.5mm banana plugs. Ensure secure connections.
- Battery Connection: Connect the battery to the power input wires of the ESC. The ESC typically uses an XT60 plug for battery connection. Ensure correct polarity (red to positive, black to negative).
- Receiver Connection: Connect the signal cable from the ESC to the throttle channel of your RC receiver.
- Water Cooling: Ensure the water cooling system is properly connected and functioning to dissipate heat from the ESC.
- Mounting: Securely mount the ESC in your RC boat or thruster, ensuring it is protected from physical damage and has adequate airflow for cooling (in addition to water cooling).





5. Operating Instructions
Once the ESC is correctly installed and connected, follow these steps for operation:
- Power On: Turn on your RC transmitter first, then connect the battery to the ESC. The ESC will perform a self-test and emit a series of beeps.
- Throttle Calibration: If necessary, calibrate the throttle range according to your transmitter's instructions. The Python Series ESC features super smooth startup and accurate throttle linearity.
- Running Modes: The ESC supports two running modes:
- "Forward Only": For applications requiring only forward motion.
- "Forward and Backward": For applications requiring both forward and reverse capabilities. This mode is suitable for most RC boats and underwater thrusters.
- Normal Operation: Use your transmitter's throttle stick to control the motor speed. The advanced 32-bit microprocessor ensures a responsive and stable control experience.
- Power Off: Disconnect the battery from the ESC first, then turn off your RC transmitter.
6. Programming
The DH Python Series ESC offers flexible programming options to customize its parameters:
- LCD Program Card: An external LCD program card (e.g., ZTW LCD Program Card G2) can be used for easy and convenient parameter adjustment.
- Phone App: Programming can also be done via a dedicated phone application, requiring an additional ZTW App Adapter.
- Transmitter: Basic programming can be performed directly through your RC transmitter. Refer to the specific programming instructions for detailed steps.


7. Maintenance
To ensure the longevity and optimal performance of your ESC, consider the following maintenance tips:
- Regular Inspection: Periodically check all connections (motor, battery, receiver) for any signs of wear, corrosion, or loose contacts.
- Cleaning: Although the ESC is waterproof, it's good practice to gently clean any dirt or debris from its surface after use, especially around the water cooling inlets/outlets.
- Heat Management: Always ensure the water cooling system is clear and functioning correctly. Blockages can lead to overheating and damage.
- Storage: Store the ESC in a dry, cool place away from direct sunlight and extreme temperatures.
8. Troubleshooting
The Python Series ESC is equipped with multiple protection features to prevent damage. If you encounter issues, consider the following:
- No Power/Response: Check battery connection, battery charge level, and receiver connection. Ensure the ESC is properly armed.
- Motor Stuttering/Irregular Operation: Verify motor wire connections, check for motor damage, and ensure correct throttle calibration.
- Overheating: Check the water cooling system for blockages or leaks. Ensure the ESC is not overloaded (e.g., using too large a propeller or motor for the ESC's rating).
- Protection Activation: The ESC features Start-up Protection, Over-Heat Protection, Low-Voltage Cutoff Protection, Phase Loss Protection, and Signal Loss Protection. If the ESC stops working unexpectedly, these protections might have been triggered. Identify the cause (e.g., low battery voltage, high temperature) and rectify it before resuming operation.

9. User Tips
- Compatibility: The Python Series ESC shares similarities with ZTW Shark ESCs, particularly regarding programming options. If you are familiar with ZTW Shark programming cards or apps, they may be compatible with this ESC (verify specific models).
- BEC Output: The adjustable 5V/6V 8A SBEC is powerful enough for most standard and high-torque servos. Ensure your servos and other connected devices operate within these voltage limits.
10. Warranty and Support
For any technical assistance, warranty claims, or support inquiries, please contact the seller or manufacturer directly. Keep your purchase records handy for faster service.





