XTAR L4 Pro Smart Charger User Manual

1. Introduction

The XTAR L4 Pro is a smart charger designed for precision charging of both 1.2V Ni-MH AA/AAA batteries and 1.5V Li-ion AA/AAA cells. It features an LCD display for real-time monitoring of charging status, battery level, and voltage for each of its four independent slots. This charger includes a special function to rescue over-discharged Ni-MH batteries and a refresh mode to help maintain battery health. Its USB-powered design offers convenient charging options.

2. Safety Instructions

• Read this manual thoroughly before using the charger.
• Do not attempt to charge non-rechargeable batteries. This may lead to explosion, rupture, or leakage, causing property damage and/or personal injury.
• Use only the specified battery types: 1.2V Ni-MH AA/AAA and 1.5V Li-ion AA/AAA.
• Do not disassemble, modify, or short-circuit the charger.
• Keep the charger away from water, moisture, and high temperatures.
• Ensure proper polarity when inserting batteries.
• Unplug the charger from the power source when not in use or before cleaning.
• Keep out of reach of children.

3. Package Contents

Verify that all items are present in your package:

• XTAR L4 Pro Smart Charger
• USB-A to USB-C Cable
• User Manual

4. Product Features

• Wide Compatibility: Supports both 1.2V AA/AAA Ni-MH batteries and 1.5V Li-ion AA/AAA batteries.
• Over-Discharged Ni-MH Battery Rescue: Capable of reviving deeply discharged Ni-MH batteries.
• Intelligent Detection System: Automatically identifies battery type and adjusts charging parameters for precise and fast charging.
• Independent Charging Slots: Each of the four slots operates independently, allowing simultaneous charging of different battery types, capacities, and sizes.
• Advanced Charging Technologies: Incorporates 5-level full charge detection and CVSA technology to extend battery life and minimize heat generation during charging.
• LCD Display: Provides clear, real-time information on charging status, battery level, and voltage for each slot.
• USB Powered: Convenient power input via USB.

5. Setup

1. Connect Power: Connect the provided USB-A to USB-C cable to the charger's USB-C port. Plug the USB-A end into a compatible USB power adapter (e.g., 5V USB wall adapter, computer USB port, or power bank).
2. Power On: The charger's LCD display will illuminate, indicating it is ready for use.

6. Operating Instructions

6.1 Charging Batteries

1. Insert Batteries: Carefully insert one or more 1.2V Ni-MH AA/AAA or 1.5V Li-ion AA/AAA batteries into the charging slots, ensuring correct polarity (+/-).
2. Automatic Detection: The charger will automatically detect the battery type (Ni-MH or Li-ion) and begin the charging process. The LCD display will show the charging status for each slot independently.
3. Charging Indication: The battery icon on the LCD will animate to indicate charging progress.
4. Completion: Once charging is complete, the LCD display will show "Done" for the respective slot, and the charging process will stop automatically.

6.2 Refresh Mode (for Ni-MH Batteries)

The Refresh Mode is designed to optimize the capacity of Ni-MH batteries, especially older or frequently used ones, by performing discharge and charge cycles. The charger offers two refresh options:

• DisCHG Mode (Daily and Quick Refresh): Ideal for batteries that are not too old. This mode performs a quick discharge before a full charge.
• Refresh Mode (Deep and Intelligent Refresh): Suitable for older or frequently used batteries. This mode involves multiple deep discharge and charge cycles to restore battery capacity.

To activate Refresh Mode:

1. Insert a Ni-MH battery into a slot.
2. Press the button below the LCD display to cycle through charging modes until "DisCHG" or "Refresh" is selected.
3. The charger will begin the refresh process. The display will show the current stage (DisCHG or CHG).

6.3 LCD Display Information

The LCD display provides comprehensive information for each battery slot:

• Battery Type: Indicates whether the inserted battery is Ni-MH or Li-ion.
• Charging Process: Shows the current charging stage (CHG for charging, DisCHG for discharging during refresh).
• Battery Level: A graphical representation of the battery's charge level.
• Voltage: Displays the current voltage of the battery.
• Error Reminder: "Err" indicates a problem with the battery or charging process.
• Working Mode: Shows the selected mode (e.g., CHG, DisCHG, Refresh).
• Fully Charged/Refresh Complete: "Done" indicates that the battery is fully charged or the refresh cycle is complete.

6.4 Multiple Protection & Safety Features

The XTAR L4 Pro charger incorporates several safety mechanisms:

• Over-Current Protection: Prevents damage from excessive current.
• Over-Charge Protection: Stops charging once batteries reach full capacity.
• Over-Voltage Protection: Safeguards against voltage surges.
• Short Circuit Protection: Protects against short circuits.
• Reverse Polarity Protection: Prevents damage if batteries are inserted incorrectly.
• Intelligent Detection: Automatically identifies battery type and status.
• Soft Start: Ensures a gentle start to the charging process.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the charger's exterior. Do not use abrasive cleaners or solvents.
• Storage: Store the charger in a cool, dry place away from direct sunlight and extreme temperatures.
• Avoid Impact: Do not drop or subject the charger to heavy impact.

8. Troubleshooting

9. Specifications

10. Warranty and Support

For warranty information and technical support, please refer to the official XTAR website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.