XTAR X2 Universal Charger User Manual

1. Safety Precautions

⚠️ Please mind potential fire risk and strictly follow the instruction manual for charging and storage.

1.1 Battery Handling

• Disassembly is prohibited: Do not disassemble batteries. Removal can lead to short circuits, causing fire, explosion, or harmful gas release.
• Electrolyte is harmful: If electrolyte touches skin or eyes, wash immediately with clean water and consult a doctor.
• Do not dump batteries in fire: Batteries may explode if burned.
• No immersion: Do not immerse batteries in liquids such as water, seawater, non-alcoholic drinks, juices, or coffee.
• Battery replacement: Should only be completed by battery manufacturers or equipment suppliers. Users should not replace batteries themselves.
• Prohibit the use of damaged batteries: Do not use batteries that are damaged (e.g., from collision, deformed packaging, electrolyte odor/leaks). Keep leaking batteries away from fire sources.

1.2 General Considerations

• Do not place batteries in heaters, washing machines, or high-pressure containers.
• Do not charge batteries with an unspecified or unsafe charger.
• If a battery becomes hot, odorous, discolored, deformed, or shows other abnormalities during charging or storage, discontinue use immediately.
• Keep batteries out of reach of children to prevent swallowing.
• When children use batteries, a guardian should explain the operation method in detail.
• Before using batteries, read the operation guide in detail and understand all matters needing attention.
• Batteries should be charged, used, and stored away from static electricity.
• Do not use or leave batteries in cars near fire sources or at temperatures over 60°C. Do not charge or discharge in these environments.
• Do not store batteries in handbags with metal items (necklaces, hairpins, coins, screws).
• It is forbidden to store lithium batteries in damp places or expose them to moisture, rain, and water.
• Pay attention to the positive and negative poles of the battery during use.
• Do not use batteries with severe deformation.
• For long-term storage of lithium-ion batteries, pack them in a battery box and store in a cool, dry place. It is recommended to charge and discharge the battery using standard methods once every six months. Then charge for 1.5 hours for continued use or normal storage.

2. Product Overview

The XTAR X2 is a universal smart charger designed for a wide range of rechargeable batteries, offering efficient and safe charging with advanced features.

Key Features:

• Wide Compatibility: Charges 3.6V/3.7V Li-ion (14500-26650) and 1.2V Ni-MH/Ni-CD batteries, including protected 20700/21700 cells.
• Auto-Selected Charging Current: Intelligently selects optimal charging current (0.5A×2, 1A×2, or 2A×1) for speedy and safe charging.
• Dual Input Ports: Features both AC input for indoor use and Micro USB input for outdoor or portable charging.
• Dial-LCD Screen: Displays real-time charging status including battery percentage, voltage, current, and charged capacity.
• 3-Stage Charging: Employs TC (trickle current) wake-up, CC (constant current) fast-charge, and CV (constant voltage) fully-charge methods to protect and prolong battery life.
• 0△V & -△V Smart Charge: High-precision MCU control for Ni-MH/Ni-CD batteries ensures optimal charging and maximizes lifespan.
• 0V Activation Technology: Can revive some over-discharged batteries by automatically detecting and activating them.
• Multiple Protections: Built-in safeguards against over-current, over-charge, over-voltage, short-circuit, soft start, and anti-reverse polarity.
• Intelligent Heat Dissipation: High-quality electronic components and multiple grooves on the back ensure efficient heat management.
• Certified Quality: Passed international safety and quality certifications including RoHS, CE, and FCC.

3. Setup

3.1 Unpacking

Carefully remove the XTAR X2 charger and all accessories from the packaging. Verify that all items listed in the "Package Contents" section are present and undamaged.

3.2 Connecting Power

1. For indoor charging, connect the provided power cord to the AC input port on the charger and then plug it into a standard wall outlet.
2. For outdoor or portable charging, connect a Micro USB cable (not included) to the Micro USB input port on the charger and to a compatible USB power source (e.g., mobile phone adapter, power bank).

3.3 Inserting Batteries

1. Identify the positive (+) and negative (-) terminals on your battery and on the charger slots.
2. Insert the battery into the charging slot, ensuring the polarity matches correctly. The charger is designed to prevent damage from reverse polarity, but correct insertion is always recommended.
3. The charger will automatically detect the battery type and begin the charging process.

4. Operating Instructions

4.1 Automatic Charging

Once a battery is correctly inserted and the charger is powered, the XTAR X2 will automatically:

1. Detect Battery Type: Identify whether the battery is Li-ion or Ni-MH/Ni-CD.
2. Select Charging Current: Intelligently choose the optimal charging current (0.5A, 1A, or 2A) based on the battery's status and capacity.
3. Initiate 3-Stage Charging: For Li-ion batteries, it will follow TC (trickle current) wake-up, CC (constant current) fast-charge, and CV (constant voltage) full-charge. For Ni-MH/Ni-CD, it uses 0△V and -△V smart charge.
4. Stop Charging: Automatically cease charging when the battery is fully charged to prevent overcharging.

4.2 Understanding the Dial-LCD Screen

The innovative Dial-LCD screen provides real-time information about the charging process:

• Battery Percentage: Shows the current charge level of the battery.
• Voltage: Displays the battery's current voltage.
• Current: Indicates the charging current being applied.
• Charged Capacity: Shows the amount of capacity charged into the battery (in mAh).

4.3 0V Activation Technology

The X2 charger can attempt to revive over-discharged batteries. If an over-discharged battery is inserted, the charger will automatically detect it and initiate a low-current activation process. This may restore some batteries to a usable state.

5. Maintenance

5.1 Cleaning

• Ensure the charger is unplugged from the power source before cleaning.
• Use a soft, dry cloth to wipe the exterior of the charger.
• Do not use abrasive cleaners, solvents, or immerse the charger in water.
• Keep the charging slots free from dust and debris.

5.2 Storage

• When not in use, store the charger in a cool, dry place away from direct sunlight and extreme temperatures.
• Remove batteries from the charger when not actively charging.
• For long-term storage of lithium-ion batteries, it is recommended to charge and discharge them using standard methods once every six months, then charge for 1.5 hours.

6. Troubleshooting

6.1 Charger Not Powering On

• Ensure the power cord is securely connected to both the charger and the power outlet.
• If using Micro USB, ensure the cable and power source are functional.
• Try a different power outlet or USB power source.

6.2 Battery Not Charging

• Verify that the battery is inserted with correct polarity (+ and -).
• Ensure the battery is compatible with the XTAR X2 charger (3.6V/3.7V Li-ion or 1.2V Ni-MH/Ni-CD).
• Check if the battery is severely damaged or short-circuited. The charger has protections, but a faulty battery may not charge.
• If the battery is over-discharged, the 0V activation technology will attempt to revive it. This process may take some time.

6.3 Abnormal Battery Behavior During Charging

• If a battery becomes excessively hot, emits odor, changes color, or deforms, immediately remove it from the charger and discontinue use. Refer to safety precautions.
• This indicates a potentially faulty battery.

7. Specifications

8. Package Contents

The XTAR X2 Universal Charger package typically includes:

• XTAR X2 Extended Charger × 1
• Power Cord × 1
• User Manual × 1

9. User Tips

• Always use the correct battery type for the charger.
• Periodically check the charger and batteries for any signs of wear or damage.
• For optimal battery life, avoid fully discharging Li-ion batteries frequently.
• Utilize the dual input feature for convenience, using AC power indoors and Micro USB for portable charging on the go.
• Monitor the LCD screen to keep track of charging progress and battery health.

10. Warranty and Support

The XTAR X2 Universal Charger comes with a 1-Year Warranty for worry-free use. For any questions or support needs, please contact XTAR Official Store customer service.