XTAR VX4 Visible Mixer Battery Charger

1. Product Overview

The XTAR VX4 Visible Mixer is an advanced 4-bay battery charger and capacity tester designed for a wide range of rechargeable batteries. It features intelligent charge recognition, real-time display of charging status, and the unique ability to test the true capacity of 1.5V Li-ion batteries. With multiple safety protection mechanisms, it ensures efficient and safe charging.

2. Specifications

2.1 Compatible Battery Types & Sizes

• 3.6V/3.7V Li-ion/IMR/INR/ICR: 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650
• 3.2V LiFePO4: All sizes listed above for 3.6V/3.7V Li-ion.
• 1.5V Li-ion: AAA, AA
• 1.2V Ni-MH: AAA, AA, A, SC, C, D

3. Package Contents

The XTAR VX4 charger is available in two main packages: 'Kit' and 'Set'. Please verify your specific package contents upon receipt.

• VX4 Charger: The main charging unit.
• C-C Charging Cable: For connecting the charger to a power source.
• User Manual: This document.
• Drawstring Bag: (Included in New 'Kit' and 'Set' versions)
• PD20W Adapter: (Included in 'Set' versions)

4. Setup Instructions

1. Unpack: Carefully remove the VX4 charger and all accessories from its packaging.
2. Connect Power: Connect the provided C-C charging cable to the Type-C input port on the VX4 charger. For optimal performance, use an XTAR PD20W adapter (if included or purchased separately) or a 5V 2A adapter/QC3.0 compatible power source.
3. Power On: Plug the power adapter into a suitable wall outlet. The charger's LED display will illuminate.

5. Operating Instructions

5.1 Inserting Batteries

Insert up to four compatible rechargeable batteries into the charging slots. Ensure correct polarity (+/-) as indicated on the charger. The charger will automatically detect the battery type and begin charging in the default mode.

5.2 Charging Function

• Intelligent Recognition: The VX4 automatically detects the battery type (Li-ion, Ni-MH, LiFePO4) and selects the optimal charging method.
• Real-Time Display: The LED screen displays real-time voltage and current for most battery types. Note: Real-time voltage and charged capacity are NOT displayed for 1.5V Li-ion batteries.
• Manual Current Selection: Press the 'C/V' button to cycle through available charging currents: 0.25A, 0.5A, 1A, 2A, 3A. The selected current level indicates the upper limit for that slot. Charging current for 1.2V Ni-MH batteries is fixed at 0.5A.
• TC-CC-CV Charging: Utilizes the optimal charging style for Li-ion batteries.
• Automatic Stop: The charger will automatically stop charging when batteries are fully charged to prevent overcharging.

5.3 Capacity Testing Function

The VX4 can test the energy (mWh) of 1.5V Li-ion batteries after any power loss, and also offers capacity testing for other battery types.

1. Switching to Capacity Testing: Long press the 'MODE' button to switch between Charging Function and Capacity Testing Function.
2. Selecting Testing Mode: Once in Capacity Testing Function, long press the 'C/V' button to switch between Standard Mode and LiFePO4 Mode.
3. Standard Capacity Testing: Supports 3.6V/3.7V Li-ion, 1.5V Li-ion, and 1.2V Ni-MH batteries.
4. LiFePO4 Capacity Testing: Supports 3.2V LiFePO4, 1.5V Li-ion, and 1.2V Ni-MH batteries.

5.4 Low-Voltage Battery Recovery

The VX4 incorporates Micro-current Activation Technology to recover over-discharged or 'dead' batteries, increasing the success rate of bringing them back to life in a safe manner.

6. Safety Warnings and Protection Features

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

The XTAR VX4 charger is equipped with leading protection technology to ensure user safety and battery longevity:

• Intelligent Detection: Automatically identifies battery type and status.
• Timely Stop When Fully Charged: Prevents overcharging.
• Over-Current Protection: Safeguards against excessive current flow.
• Over-Charge Protection: Protects batteries from being charged beyond their capacity.
• Over-Voltage Protection: Prevents damage from voltage spikes.
• Short Circuit Protection: Automatically cuts off power in case of a short circuit.
• Reverse Polarity Protection: Prevents damage if batteries are inserted incorrectly.
• Soft Start: Gradually increases charging current to protect batteries.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the charger. Do not use abrasive cleaners or solvents.
• Storage: Store the charger in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Avoid dropping the charger or subjecting it to strong impacts.

8. Troubleshooting

• Charger not powering on: Ensure the power cable is securely connected to both the charger and the power outlet. Verify the power adapter is functioning correctly.
• Battery not charging: Check that the battery is inserted with correct polarity. Ensure the battery is compatible with the VX4 charger. If the battery is severely over-discharged, the low-voltage recovery function may take some time to initiate charging.
• Display issues: If the display is blank or showing errors, try disconnecting and reconnecting the power. If the issue persists, contact customer support.

9. User Tips

• Battery Inclusion: Please note that batteries are typically not included with the charger unless explicitly stated in the product description or package variant (e.g., a 'set' that includes specific batteries).
• Trickle Charge: The XTAR VX4 features intelligent charging, which includes a maintenance charge (often referred to as trickle charge) once the battery is full, ensuring it stays topped off without overcharging.
• Optimal Adapter: For the best charging experience, especially when utilizing higher current settings, it is recommended to use a PD20W adapter.

10. Warranty and Support

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