1. Introduction
The XTAR MC2 Plus is a compact yet powerful Li-ion battery charger designed for universal compatibility with various 3.7V Li-ion batteries, including popular sizes like 18650, 20700, 21700, 14500, 16340, 10440, and 18500. It features intelligent charging capabilities, automatically selecting the optimal charging current to maximize battery lifespan, and provides real-time charging status through a delicate display. Its Micro USB port allows for convenient charging anywhere.
2. Product Features
- Real 1Ax2 Fast Charging: Capable of fully charging two VTC5 batteries in approximately 3 hours.
- Intelligent Current Selection: Automatically chooses the most suitable charging current (0.5A/1A) for inserted batteries to optimize battery life.
- Clear Display: A delicate display provides real-time information on charging current and charging status.
- Micro USB Port: Allows for convenient charging from various USB power sources, enabling portability.
- Universal Compatibility: Supports a wide range of 3.7V Li-ion batteries.
3. Package Contents
Please check the package carefully to ensure all items are present:
- 1 x XTAR MC2 PLUS Charger (batteries not included)
- 1 x USB Cable
- 1 x User Manual
4. Setup
- Connect Power: Connect the provided USB cable to the Micro USB port on the XTAR MC2 Plus charger. Plug the other end of the USB cable into a compatible USB power adapter (e.g., wall adapter, computer USB port, power bank). The charger's display will illuminate, indicating it is ready for use.
- Insert Batteries: Carefully insert your 3.7V Li-ion batteries into the charging slots, ensuring the positive (+) and negative (-) terminals of the battery align correctly with the markings on the charger. The charger will automatically detect the battery type and begin the charging process.

Image: The XTAR MC2 Plus charger with two blue XTAR batteries inserted into its slots. A USB cable is connected to the top of the charger. The display shows charging indicators and current options (0.5A/1.0A).
5. Operating Instructions
The XTAR MC2 Plus charger is designed for ease of use with automatic functions.
- Automatic Current Selection: Upon inserting a battery, the charger will automatically detect the battery's internal resistance and capacity to determine the most suitable charging current (either 0.5A or 1.0A). This intelligent feature helps prolong battery life.
- Charging Status Display: The integrated display provides visual cues for the charging process.
- Blue Bars: Indicate the charging progress. More bars illuminated mean the battery is closer to being fully charged.
- Current Indicator: Shows whether the charger is operating at 0.5A or 1.0A.
- Charging Completion: Once a battery is fully charged, the charger will automatically stop charging to prevent overcharging. The display bars for that slot will typically show full.
- Battery Removal: Once charging is complete, carefully remove the batteries from the slots.
6. Maintenance
Proper maintenance ensures the longevity and safe operation of your XTAR MC2 Plus charger.
- Cleaning: Use a soft, dry cloth to clean the charger. Do not use abrasive cleaners or solvents. Ensure no dust or debris accumulates in the charging slots or USB port.
- Storage: Store the charger in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Handling: Avoid dropping the charger or subjecting it to strong impacts.
- Safety:
- Only charge compatible 3.7V Li-ion batteries. Do not attempt to charge other battery types.
- Ensure correct battery polarity when inserting batteries.
- Do not disassemble or modify the charger.
- Keep out of reach of children and pets.
- If the charger shows signs of damage or malfunction, discontinue use immediately.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not powering on. | No power supply; faulty USB cable; faulty power adapter. | Ensure USB cable is securely connected. Try a different USB cable or power adapter. Check the power source. |
| Battery not charging. | Incorrect battery insertion; incompatible battery type; battery is already full; faulty battery. | Re-insert battery, ensuring correct polarity (+/-). Verify battery is a 3.7V Li-ion. Check if battery is already fully charged. Try a different battery. |
| Display not showing status. | Charger not powered; display malfunction. | Ensure charger is powered on. If powered and still no display, contact support. |
8. Specifications
| Attribute | Detail |
|---|---|
| Brand | XTAR |
| Model | MC2 PLUS |
| Compatible Battery Type | 3.7V Li-ion (18650, 20700, 21700, 14500, 16340, 10440, 18500) |
| Charging Current | 0.5A / 1.0A (automatic selection) |
| Charging Port | Micro USB |
| Typical Charging Time (VTC5x2) | Approx. 3 hours |
| Dimensions | 11.2 x 6.22 x 6.02 cm |
| Weight | 95.25 g |
| Date First Available | Aug. 16 2018 |
| UPC | 712971170698 |
9. Warranty and Support
XTAR products are manufactured to high-quality standards. For specific warranty information regarding your XTAR MC2 Plus charger, please refer to the warranty card included in your product packaging or visit the official XTAR website. For technical support, troubleshooting assistance, or any inquiries not covered in this manual, please contact XTAR customer service through their official channels or the retailer from whom you purchased the product.
Note: Always retain your proof of purchase for warranty claims.





