HTRC L6X2 Dual Channel LiPo Battery Charger Instruction Manual

1. Introduction

The HTRC L6X2 is a versatile dual-channel balance charger/discharger designed for a wide range of battery types, including LiPo, Li-ion, LiFe, LiHV, NiMH, NiCd, and PB (Lead-Acid) batteries. It features both AC and DC input options, with a total AC charging power of 150W (shared between channels) and DC charging power of 120W per channel (total 240W). Each channel can deliver up to 10A charging current. This manual provides essential information for safe and effective operation of your L6X2 charger.

2. Safety Information

• WARNING: Always ensure you select the correct battery type and charging parameters before starting any charging process. Incorrect settings can lead to battery damage, fire, or personal injury.
• The charger incorporates multiple safety protections: Reverse Polarity Protection, Short Circuit Protection, Over-Charge Protection, Over-Temperature Protection, and Over-Current Protection.
• Ensure adequate ventilation around the charger during operation, as it features a built-in cooling fan for heat dissipation.
• Do not operate the charger in wet conditions or near flammable materials.
• Keep out of reach of children.

Always verify battery type before charging.

3. Package Contents

Verify that all items are present in your package:

• 1x HTRC L6X2 Charger
• 2x Charge cable (banana plug to T-Plug)
• 2x Extension charge cable (T-Plug to XT60)
• 2x Extension cable (T-plug to Tamiya)
• 2x Extension cable (T-plug to crocodile clip)
• 1x AC Power Cord (US, EU, UK, or AU type, depending on region)
• 1x DC Cord
• 1x User's Manual

L6X2 Charger with all included cables and accessories.

4. Product Overview

The L6X2 charger features a compact design with dual LCD screens for independent channel monitoring. Key components include:

• Dual LCD Displays: For monitoring each charging channel.
• Control Buttons: 'STOP', '+', '-', 'STATUS', 'ENTER' for navigation and parameter adjustment.
• AC Input: 100-240V for wall power.
• DC Input: 11-18V for external DC power sources.
• Output Ports: Main charging ports for connecting batteries.
• Balance Sockets: For connecting battery balance leads (ensure correct polarity).
• Cooling Fan: Integrated for efficient heat dissipation.
• PC Link Port: For potential firmware updates or data logging.
• Temperature Sensor Port: For optional temperature monitoring.

L6X2 Charger with labeled components.

Detailed view of charger ports and controls.

5. Setup and Connection

Follow these steps to set up your L6X2 charger and connect a battery:

1. Power Connection: Plug the AC power cable into the charger and a wall outlet, or connect the DC cord to a suitable 11-18V DC power source.
2. Battery Main Leads: Connect the main positive (+) and negative (-) leads of your battery to the corresponding output ports on the charger. Ensure correct polarity (red to red, black to black).
3. Balance Lead (for LiPo/Li-ion/LiFe/LiHV): Connect the battery's balance lead to the balance socket on the right side of the charger. Ensure the correct direction (from Right (-) to Left (+)). This is crucial for balanced charging.
4. Dual Channel Charging: The L6X2 supports simultaneous charging of two batteries. Repeat steps 2 and 3 for the second channel.

Visual guide for connecting batteries.

Example of dual channel battery connection.

6. Operating Instructions

The L6X2 offers various operating modes for different battery types. Use the 'STATUS' and 'ENTER' buttons to navigate the menu and confirm selections. Use '+' and '-' buttons to adjust values.

6.1. General Operation

• The LCD screen provides a simple menu for easy browsing and operation.
• After setting parameters, press the 'ENTER' button for 3 seconds to start the charging/discharging process.
• Press 'STOP' to cancel any operation.

User-friendly interface for easy operation.

Starting a charging process.

6.2. Supported Battery Types and Modes

The L6X2 is compatible with a wide range of RC toy batteries:

• LiPo/Lilon/LiFe/LiHV (1-6S): Balance Charge, Charge, Fast Charge, Storage, Discharge.
• NiMH/NiCd (1-15S): Charge, Discharge, Cycle.
• PB (Lead-Acid) (2-20V): Charge, Discharge, Trickle.
• Smart Battery (I/II/III): Digital DC Power (requires optional DJI Charging cable).

Supported battery types and cell counts.

Wide battery type compatibility for RC applications.

6.3. Charging Modes Explained

• Balance Charge: For LiPo or Li-Ion battery packs with multiple cells, this mode ensures all cells are charged evenly, prolonging battery life and improving safety.
• Fast Charge: Charges more quickly but with lower balancing accuracy than Balance Charge mode.
• Storage Charge: Controls the final voltage of the battery to a level suitable for long-term storage, preventing degradation.
• Discharge: Discharges the battery to a set voltage.
• Cyclic Charging & Discharge: A 1 to 5 cyclic and continuous process of charge->discharge or discharge->charge, operable for refreshing and balancing to stimulate NiMH/NiCd batteries' activity.

6.4. Multi-Extra Functions

• Battery Meter: Displays lithium battery cell counts, total voltage, battery capacity percentage, and each cell's voltage (does not support 1S batteries).
• TVC (Terminal Voltage Control): Allows users to set the charge/discharge end voltage.
• Lithium Battery Internal Resistance Check: Displays each cell's resistance (does not support 1S batteries).
• Balancer: Individual-cell-voltage balancing and cell voltage monitoring.
• Data Storage and Loading: Set and save parameters for different batteries and work modes to quickly load them for a faster experience. Total 5 profiles can be saved.

Overview of safety features and core functions.

6.5. Determining Charge Rate for LiPo Batteries

To safely charge your LiPo battery, it's important to determine the correct charge rate. Look at the battery label for its chemistry (LiPo), voltage (e.g., 11.1V), and capacity (e.g., 4000mAh). The charge rate should generally not exceed 1C (1 times the capacity). For a 4000mAh battery, 1C is 4000mA or 4A. The video demonstrates calculating the charge rate as Capacity / 4000, which for a 4000mAh battery results in 1A. Always refer to your battery manufacturer's recommendations.

How to calculate the charge rate for a LiPo battery.

7. Maintenance

• Keep the charger clean and free from dust and debris. Use a soft, dry cloth for cleaning.
• Ensure the cooling fan is not obstructed to maintain proper airflow and prevent overheating.
• Store the charger in a cool, dry place when not in use.
• Regularly inspect cables and connectors for any signs of wear or damage. Replace damaged components immediately.

8. Troubleshooting

• Charger not powering on: Check AC/DC power connections. Ensure the power switch is in the 'ON' position.
• Charging error message: Verify battery type and cell count settings match the connected battery. Check all connections (main leads and balance leads) for correct polarity and secure fit.
• Over-temperature warning: Ensure the cooling fan is not obstructed and the charger is in a well-ventilated area. Allow the charger to cool down before resuming operation.
• Unbalanced cells (LiPo/Li-ion/LiFe/LiHV): Ensure the balance lead is correctly connected and the 'Balance Charge' mode is selected.

9. Specifications

10. User Tips

• Always double-check your battery's specifications (chemistry, voltage, capacity) against the charger settings to prevent damage.
• For LiPo batteries, using the 'Balance Charge' mode is highly recommended to ensure cell longevity and safety.
• When storing LiPo batteries for extended periods, use the 'Storage' mode to bring them to a safe voltage level.

11. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the contact information provided by your retailer or the manufacturer's official website. Keep your purchase receipt as proof of purchase.