XTAR L4 Pro AA/AAA Battery Charger and 8-Pack 4150mWh Lithium AA Batteries User Manual

1. Introduction

Thank you for choosing the XTAR L4 Pro Battery Charger and XTAR 4150mWh Lithium AA Batteries. This manual provides detailed instructions for the safe and efficient use of your new charger and batteries. Please read this manual thoroughly before operation and retain it for future reference.

2. Package Contents

Verify that all items listed below are included in your package:

• 1 x XTAR L4 Pro Charger
• 1 x USB-C Cable
• 1 x User Manual (this document)
• 8 x 1.5V 4150mWh Rechargeable Lithium AA Batteries
• 2 x Battery Cases

Image: Contents of the XTAR L4 Pro package, showing the charger, USB-C cable, and eight AA lithium batteries.

3. Safety Instructions

To prevent injury, property damage, or product damage, observe the following safety precautions:

• Do not disassemble, short circuit, or expose batteries to heat.
• Do not mix with used batteries or batteries of different types.
• Use only with compatible 1.5V Li-ion AA/AAA and 1.2V Ni-MH AA/AAA rechargeable batteries.
• Do not charge alkaline or non-rechargeable batteries.
• Keep the charger and batteries away from water and high humidity.
• Do not operate the charger if it has been damaged in any way.
• Ensure proper polarity when inserting batteries into the charger.
• Keep out of reach of children.
• Unplug the charger from the power source when not in use.

Image: Diagram illustrating the XTAR L4 Pro's multiple protection features, including over-charge, over-voltage, over-current, short circuit, timely stop when fully charged, reverse polarity protection, intelligent detection, and soft start.

4. Product Overview

The XTAR L4 Pro is a smart 4-slot independent charger designed for both 1.5V Li-ion and 1.2V Ni-MH AA/AAA rechargeable batteries. It features an LCD display for monitoring charging status and offers various modes for optimal battery care.

Image: Overview of the XTAR L4 Pro Smart Charger, highlighting features such as Smart Recharge, Deep Refresh, LCD Display, Independent Slots, and Safer Protection.

4.1. Key Features

• Universal Compatibility: Supports 1.5V Li-ion AA/AAA and 1.2V Ni-MH AA/AAA rechargeable batteries.
• 4 Independent Slots: Allows simultaneous charging of 1-4 batteries of different types and sizes.
• LCD Display: Provides real-time charging status, voltage, and battery type detection.
• Smart Recharge: Automatically detects battery type and applies appropriate charging current.
• Deep Refresh Mode: Optimizes battery capacity for Ni-MH cells.
• Repair Mode: Recovers over-discharged 1.2V Ni-MH batteries.
• USB-C Input: Convenient and fast charging.
• Multiple Protections: Over-charge, over-voltage, over-current, short circuit, and reverse polarity protection.

Image: The XTAR L4 Pro charger with various AA and AAA batteries inserted, demonstrating its multi-battery compatibility for both 1.5V Li-ion and 1.2V Ni-MH types.

4.2. XTAR 4150mWh Lithium AA Batteries

The included 1.5V 4150mWh Lithium AA batteries offer high capacity and a stable 1.5V output. They feature a unique low-voltage indicator and built-in protection against over-charge, over-discharge, and short-circuit.

Image: Illustration of the XTAR Lithium AA battery's low-voltage detection function, showing a 1.5V constant output and a 1.1V low-voltage indicator, useful for devices like smart door locks.

5. Setup

1. Connect Power: Connect the provided USB-C cable to the charger's input port and plug the other end into a compatible USB power adapter (not included, 5V/2A recommended). The LCD screen will illuminate.
2. Insert Batteries: Carefully insert 1 to 4 rechargeable AA or AAA batteries into the charger slots, ensuring correct polarity (+ and - ends match the markings on the charger).
3. Automatic Detection: The charger will automatically detect the battery type (Li-ion 1.5V or Ni-MH 1.2V) and display the current status on the LCD screen.

6. Operating Instructions

6.1. Charging Batteries

1. After inserting batteries, the charger will begin charging automatically.
2. The LCD screen will show the charging progress for each slot.
3. Charging time for rechargeable lithium AA/AAA batteries is approximately 1.5 hours.
4. Once charging is complete, the LCD will display "Done" for the respective slot.
5. Remove batteries promptly after charging is complete.

6.2. Refresh Mode (for Ni-MH Batteries)

The Refresh Mode is designed to maximize the capacity of older or frequently used Ni-MH batteries by fully discharging and then recharging them. This process can help reduce memory effect.

• DisCHG Mode: A daily and quick refresh, ideal for batteries that are not too old.
• Refresh Mode: A deep and intelligent refresh, suitable for older or frequently used batteries.

Image: The XTAR L4 Pro charger's LCD screen displaying the "DisCHG" and "Refresh" modes for Ni-MH batteries, illustrating how these modes help maximize battery capacity.

6.3. Repair Mode (for 1.2V Ni-MH Batteries)

The Repair Mode uses micro-current activation technology to safely recover over-discharged 1.2V Ni-MH batteries, potentially saving them from being discarded.

1. Insert an over-discharged 1.2V Ni-MH battery into a slot.
2. The charger will attempt to activate the battery using a low current.
3. If successful, the charger will proceed with normal charging. If not, "Err" will be displayed.

Image: The XTAR L4 Pro charger demonstrating its low-voltage battery recovery feature, showing a discharged battery being reactivated by micro-current activation technology.

6.4. Understanding the LCD Display

The LCD screen provides visual feedback on the charging process:

• Battery Icon: Indicates charging progress.
• Li-ion 1.5V / Ni-MH 1.2V: Shows the detected battery type.
• CHG: Charging in progress.
• DisCHG: Discharging in progress (Refresh Mode).
• Refresh: Refresh cycle in progress.
• Done: Charging or refresh cycle complete.
• Err: Error detected (e.g., incompatible battery, short circuit, defective battery).

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the charger and battery contacts. Do not use abrasive cleaners or solvents.
• Storage: Store the charger and batteries in a cool, dry place away from direct sunlight and extreme temperatures.
• Battery Care: For optimal battery life, avoid fully discharging lithium batteries frequently. For Ni-MH batteries, use the Refresh Mode periodically.

8. Troubleshooting

9. Specifications

Image: Detailed parameters table for XTAR batteries, including positive pole type, protection, standard charging voltage, normal voltage, low power voltage output, max continuous discharge current, charging current, working temperature, charging temperature, storage temperature, cycle life, net weight, energy, size, and indicator presence.

10. Official Product Videos

11. Warranty and Support

XTAR products are manufactured with high-quality materials and are thoroughly tested. For warranty information and technical support, please refer to the official XTAR website or contact their customer service directly.

• Official Website: www.xtar.cc
• Customer Service: Refer to the contact information provided on the official website or your purchase platform.