1. Introduction
The HTRC C6X2 is a versatile dual-channel RC battery charger and discharger designed for a wide range of battery types. It supports simultaneous charging of two different batteries, offering both AC and DC input options. This manual provides essential information for safe and efficient operation of your charger.
2. Product Features
- Dual Channel Charging: Simultaneously charge two different batteries. AC input max power 150W (CH1+CH2=150W), 100-240V; DC input max power 240W (CH1+CH2=240W), 11-18V. Charge current: 0.1-10A*2; discharge power: 10W; discharge current: 0.1-2A*2.
- Wide Battery Compatibility: Supports 1S-6S Lithium (LiPo, LiHV, Li-Ion, LiFe), 2V-20V Lead Acid (Pb), 1S-15S Nickel Cadmium (NiCD), 1S-15S Nickel Metal Hydride (NiMH), and Smart batteries. Automatic stop charging when full.
- Multiple Charging Modes: Includes Charge, Balance Charge, Discharge, and Storage modes. Monitors and balances individual cells during discharging.
- User-Friendly Interface: Large screen for easy selection of modes, voltage, and current adjustments.
- Load Memory Function: Stores up to 20 memory profiles for different battery types for quick setup.
3. Package Contents

Figure 3.1: Contents of the HTRC C6X2 Smart Charger package.
- HTRC C6X2 Smart Charger Unit
- AC Power Cable
- DC Cable
- XT60 to Deans Charge Cable
- XT60 to EC5 Cable
- Multilingual Instruction Manual
4. Setup and Initial Connection
Before operating the charger, ensure all connections are secure and correct. The charger supports both AC (wall outlet) and DC (external power supply, e.g., car battery) input.

Figure 4.1: Step-by-step guide for connecting the charger.
- Power Connection: Plug the AC power cable into the power port on the back of the charger and then into a wall outlet. Alternatively, for DC input, connect the DC cable to the charger and an appropriate DC power source (e.g., a 12V car battery using the provided alligator clips). Do not use AC and DC power cables simultaneously.
- Battery Link XT60 Port: Connect your battery's main power lead (e.g., XT60 connector) to the corresponding XT60 port on the charger (Channel A or B).
- Battery Connection Balance Port: For LiPo, LiHV, Li-Ion, and LiFe batteries, connect the battery's balance lead to the appropriate balance port on the charger. Ensure the balance plug is inserted correctly, matching the cell count.
- Set Battery Value: Use the charger's interface to select the correct battery type, cell count, and desired charging parameters.
5. Battery Connection Methods
The HTRC C6X2 charger offers flexible connection options for various battery types and connectors.

Figure 5.1: Illustration of direct XT60 connection and conversion cables for EC5/T-Plug interfaces.
- Method 1: Direct XT60 Connection: For batteries equipped with an XT60 interface, directly plug the battery's main power lead into the charger's XT60 output port.
- Method 2: Using Conversion Cables: For batteries with EC5 or T-Plug interfaces, use the provided XT60 to EC5 or XT60 to T-Plug conversion cables. Connect the XT60 end to the charger and the appropriate connector to your battery.
Always ensure a secure connection and verify the correct polarity before initiating any charging or discharging process.
6. Operating Instructions
The HTRC C6X2 features a large screen and intuitive buttons for navigation and setting parameters. Familiarize yourself with the button functions:
- Left/Right Arrows: Navigate through menus and adjust values.
- Start/Enter Button: Confirm selections and start processes.
- Stop/Back Button: Stop current operations or return to the previous menu.
To begin, select the desired program (e.g., LiPo Balance Charge) and adjust parameters such as current and cell count. Press and hold the Start/Enter button to confirm and initiate the process. The charger will display real-time charging information.

Figure 6.1: Charger display showing input power, charge power, and charge current capabilities.
7. Charging Modes and Battery Types
The C6X2 charger supports a comprehensive range of battery chemistries and offers various modes to optimize battery health and performance.

Figure 7.1: The charger's compatibility with various battery types and cell configurations.
Supported Battery Types:
- LiPo (Lithium Polymer): 1S-6S (3.7V-22.2V)
- LiHV (Lithium High Voltage): 1S-6S (3.85V-23.1V)
- Li-Ion (Lithium-ion): 1S-6S (3.6V-22.2V)
- LiFe (Lithium Iron Phosphate): 1S-6S (3.2V-19.2V)
- NiMH (Nickel Metal Hydride): 1S-15S (1.2V-18V)
- NiCD (Nickel Cadmium): 1S-15S (1.2V-18V)
- PB/SLA (Lead Acid/Sealed Lead Acid): 2V-20V
- Smart Batteries (I, II, III)
Available Modes:
- Charge: Standard charging mode.
- Balance Charge: Recommended for Lithium batteries. This mode charges and balances individual cells within the battery pack to ensure optimal performance and longevity.
- Discharge: Discharges the battery to a safe storage voltage or a specified level.
- Storage: Charges or discharges the battery to a specific voltage level suitable for long-term storage, preserving battery health.
- Cycle: Performs charge/discharge cycles to recondition certain battery types.
8. Advanced Safety Features
The HTRC C6X2 is equipped with multiple protection mechanisms to ensure safe operation and protect your batteries and charger.

Figure 8.1: Overview of the advanced safety features integrated into the charger.
- Overtemperature Protection: Automatically shuts down if internal temperature exceeds safe limits.
- Overcurrent Protection: Prevents damage from excessive current draw.
- Reverse Connection Protection: Protects against damage from incorrect battery polarity connection.
- Low Voltage Protection: Prevents over-discharge of batteries.
- Overvoltage Protection: Safeguards against charging batteries beyond their maximum voltage.
- Short Circuit Protection: Automatically cuts power in case of a short circuit.
- Sync Charging Model: Ensures balanced charging across multiple cells.
- Safety Timer: User-configurable timer to prevent overcharging.
- Resistance Detection: Monitors internal resistance of battery cells.
- Capacity Cut-Off: Stops charging once a set capacity is reached.
- Voltage Check: Displays individual cell voltages for monitoring.
9. Specifications
| Feature | Specification |
|---|---|
| Product Dimensions | 7.8 x 7.8 x 3.1 inches (7.8"D x 7.8"W x 3.1"H) |
| Item Weight | 2.16 pounds |
| Model Number | C6X2 |
| Brand | HTRC |
| Manufacturer | HuiTuo |
| Color | Yellow |
| AC Input Voltage | 100-240 Volts |
| DC Input Voltage | 11-18 Volts |
| Output Voltage | 24 Volts (DC) |
| AC Input Max Power | 150W (CH1+CH2) |
| DC Input Max Power | 240W (CH1+CH2) |
| Charge Current | 0.1-10A*2 |
| Discharge Power | 10W |
| Discharge Current | 0.1-2A*2 |
10. Maintenance
Proper maintenance ensures the longevity and reliable performance of your HTRC C6X2 charger.
- Cleaning: Regularly clean the charger's exterior with a soft, dry cloth. Avoid using solvents or abrasive cleaners. Ensure ventilation openings are free from dust and debris.
- Storage: Store the charger in a cool, dry place away from direct sunlight, moisture, and extreme temperatures.
- Cable Inspection: Periodically inspect all cables and connectors for any signs of wear, damage, or corrosion. Replace damaged cables immediately.
- Firmware Updates: Check the manufacturer's website for any available firmware updates to ensure optimal performance and compatibility with new battery technologies.
11. Troubleshooting
If you encounter issues with your HTRC C6X2 charger, refer to the following common troubleshooting tips:
- Charger Not Powering On:
- Ensure the AC power cable is securely plugged into both the charger and a live wall outlet.
- If using DC input, verify the DC cable is correctly connected to a functional power source (e.g., car battery) and the power switch is on.
- Battery Not Charging/Error Message:
- Check all battery connections (main power and balance leads) for proper seating and polarity.
- Verify that the correct battery type and cell count are selected in the charger's settings.
- Inspect the battery for any physical damage or swelling. Do not charge damaged batteries.
- Ensure the battery's voltage is within the acceptable range for charging.
- Excessive Fan Noise:
- The charger's fans operate to dissipate heat during charging, especially at higher power outputs. Some noise is normal.
- Ensure the charger's ventilation openings are not obstructed.
- If the noise is unusually loud or accompanied by error messages, discontinue use and contact support.
- Inaccurate Readings:
- Ensure balance leads are clean and fully inserted.
- Calibrate the charger if an option is available in the settings (refer to the full manual for advanced calibration procedures).
For persistent issues, please contact HTRC customer support.
12. Warranty and Support
HTRC products are designed for reliability and performance. For specific warranty details, please refer to the warranty card included with your product or visit the official HTRC website. Keep your purchase receipt as proof of purchase.
For technical assistance, troubleshooting, or spare parts, please contact HTRC customer support through their official channels. Provide your product model number (C6X2) and a detailed description of the issue for efficient service.





