1. Introduction
The Flipsky FT85BS V2.0 ESC is a high-performance electronic speed controller designed for a wide range of electric vehicles, including electric skateboards, scooters, ebikes, and robotics. It features an ARM Cortex-M4 CPU (AT32F403ARCT7) with a clock speed of 240MHz, enabling a max PWM switching frequency of 25KHz for improved motor RPM. The controller utilizes an aluminum-based PCB, ensuring excellent heat dissipation for reliable operation.
This manual provides essential information for the proper installation, operation, and maintenance of your FT85BS V2.0 ESC.
2. Specifications
| Feature | Specification |
|---|---|
| Model | FT85BS V2.0 |
| Firmware | V1.4 or above (firmware update via Flipsky ESC Tool supported) |
| Voltage | 14-84V (safe for 4-20S) |
| Continuous Current | 50V/60A; 75V/50A; 84V/40A (depends on mounting, ambient temperature, and air/water circulation) |
| Peak Current | 250A |
| Communication Ports | USB, CAN, UART, PPM, ADC |
| Input Signals Support | PPM, ADC, UART (compatible with FLIPSKY remote VX4 and VX3Pro only at present), PAS |
| Startup Modes Support | IPDS (sensorless), HFPI (sensorless), HALL (sensored), Encoder (ABI, AS5047 encoder SPI interface) |
| BEC | 5V@1A |
| Multiple Speed Gear Levels | Low, Medium, High, Reverse |
| Programmable | Yes |
| Regenerative Capacity | Yes |
| Motor/Power Wire Size | 12 AWG |
| Dimensions (Including Alu. Case) | L110.5*W55*H30mm |
| Power Switch Button Color | Red |
| Material | Metal |
| Recommended Age | 14+y |
Dimensions


3. Setup and Installation
3.1 Wiring Connections
Ensure all connections are secure and correctly oriented before powering on the device. Refer to the diagrams below for detailed wiring instructions.


Connecting with Throttle and Brake

Connecting with Bluetooth Module

Connecting with VX4 Remote

3.2 Programming
The FT85BS V2.0 ESC is highly programmable, allowing compatibility with various motor types, battery voltages, and control methods. Programming can be done via the Flipsky ESC Tool or a compatible Flipsky remote controller.
Programming via Flipsky ESC Tool
Connect the ESC to your computer via the USB port. Use the Flipsky ESC Tool software to configure motor parameters, battery settings, and other control options. Ensure the firmware is V1.4 or above for full compatibility.
Programming via Flipsky VX4 Remote
The ESC can also be programmed using a Flipsky VX4 remote controller (firmware version VX4_V1.4.0 or above). This allows for convenient on-the-go adjustments to settings such as motor rated current identification.
4. Operating Instructions
The FT85BS V2.0 ESC supports various control types and startup modes to suit different applications.
4.1 Control Types
- Current Control: Regulates the motor current.
- Duty Cycle Control: Controls the motor speed based on PWM duty cycle.
- Speed Control: Maintains a desired motor speed.
- Position Control: For precise motor positioning.
4.2 Startup Modes
- IPDS (Sensorless): Inductance Position Detection System for sensorless motor startup.
- HFPI (Sensorless): High-Frequency Pulse Injection for sensorless motor startup.
- HALL (Sensored): Utilizes Hall sensors for precise motor commutation.
- Encoder (ABI, AS5047 encoder SPI interface): Supports various encoder types for advanced control.
4.3 Speed Gear Levels
The ESC supports multiple speed gear levels: Low, Medium, High, and Reverse, allowing for flexible control based on user preference and application requirements.
4.4 Regenerative Capacity
The FT85BS V2.0 ESC features regenerative braking, which allows energy to be recovered and returned to the battery during deceleration, improving efficiency and extending range.
5. Maintenance
To ensure the longevity and optimal performance of your Flipsky FT85BS V2.0 ESC, follow these maintenance guidelines:
- Regular Inspection: Periodically check all wiring connections for looseness, corrosion, or damage. Ensure the motor and power wires (12 AWG) are in good condition.
- Cleanliness: Keep the ESC free from dust, dirt, and moisture. Use a soft, dry cloth for cleaning. Avoid using solvents or harsh chemicals.
- Heat Dissipation: The aluminum case and PCB are designed for excellent heat dissipation. Ensure adequate airflow around the ESC, especially during high-current operation. Avoid obstructing the cooling fins.
- Firmware Updates: Regularly check the Flipsky website for the latest firmware updates. Keeping your firmware up-to-date can improve performance, add new features, and fix bugs.
- Environmental Conditions: Operate the ESC within its specified temperature and humidity ranges. Extreme conditions can affect performance and lifespan.
6. Troubleshooting
The FT85BS V2.0 ESC incorporates several protection functions to prevent damage. If you encounter issues, consider the following:
6.1 Protection Functions
- Low and High Voltage Protection: The ESC will shut down or limit power if the battery voltage goes outside the safe operating range (14-84V). Check your battery voltage and connections.
- Over-Current Protection: If the motor draws excessive current, the ESC will protect itself. This could indicate a motor issue, a short circuit, or an overloaded system.
- Temperature Abnormally Protection: The ESC monitors its internal temperature and the motor temperature (if a sensor is used). If temperatures exceed safe limits, power will be reduced or cut off. Ensure proper cooling and avoid continuous high-load operation.
- MOSFETs Over-Temperature and Over-Current Protection: Specific protection for the power MOSFETs.
- Battery Over-Discharge Protection: Prevents damage to your battery by cutting off power when the voltage drops too low.
- Motor Over-Temperature Protection: If a motor temperature sensor is connected and configured, the ESC will protect the motor from overheating.
6.2 General Troubleshooting Steps
- Check all connections: Ensure all wires are securely connected and free from damage.
- Verify power supply: Confirm your battery is charged and providing the correct voltage.
- Review ESC Tool settings: Connect to the Flipsky ESC Tool and check all configured parameters, especially motor identification and battery cut-off voltages.
- Inspect motor: Check the motor for any physical damage or obstructions.
- Reset to default: If unsure about settings, try resetting the ESC to factory defaults via the ESC Tool and reconfigure step-by-step.
7. User Tips
- Proper Parameter Setup: Take your time to correctly set up all motor and battery parameters using the Flipsky ESC Tool. Incorrect settings can lead to poor performance or damage.
- Firmware Compatibility: When using a Flipsky VX4 remote for programming, ensure its firmware version is VX4_V1.4.0 or above for optimal compatibility and functionality.
- Heat Management: While the aluminum case provides good heat dissipation, consider your application's environment. In high-power or enclosed setups, additional cooling might be beneficial to prevent thermal throttling.
- Wire Management: Organize and secure all wires to prevent them from snagging, rubbing, or coming loose during operation. This helps avoid intermittent connections and potential shorts.
8. Warranty and Support
For warranty information, technical support, or further assistance, please contact Flipsky customer service or visit the official Flipsky website at https://flipsky.net/. Please have your product model and purchase details ready when contacting support.





