XTAR VX4 V2 4-Slot Smart Battery Charger - 3A PD Fast Charge with LCD Display & Capacity Tester for Li-ion (3.6/3.7V), LiFePO4 (3.2V), 1.5V Li-ion & 1.2V NiMH (AAA/AA/) - Dual Mode & Microcurrent Repair
Description
【Product Description】
The ultimate charging command center for battery enthusiasts. The XTAR VX4 V2 4-Slot Smart Battery Charger is a professional-grade device that combines blazing-fast charging, comprehensive diagnostics, and universal compatibility into one sleek, intelligent package.
Equipped with a high-definition LCD display, the VX4 V2 provides real-time data on voltage, current, and charged capacity. Powered by a Type-C PD 20W input, it delivers a staggering 3A maximum charging current to a single slot, dramatically reducing charging time for large-capacity cells.
The VX4 V2 features a microcomputer-controlled dual-mode system and independent slots, allowing you to charge 3.6V/3.7V Li-ion, 3.2V LiFePO4, 1.5V Li-ion, and 1.2V NiMH (AAA/AA/SC) batteries simultaneously. It goes beyond charging with its Capacity Testing (Grad) mode, which deeply analyzes your batteries to reveal true capacity. Additionally, the Microcurrent Activation feature can safely revive deeply discharged batteries that other chargers reject.
IMPORTANT: This listing is for the charger unit only. Batteries are NOT included.
(Note: To prevent internal power management issues, the VX4 V2 does NOT support charging 3.6/3.7V Li-ion and 3.2V LiFePO4 batteries simultaneously in the same session.)
【Key Features】
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3A Ultra-Fast Charging (PD 20W): When paired with a Type-C PD 20W (12V) adapter, the single-channel Li-ion charging current can be manually selected up to a blistering 3A. Also supports QC 9V and standard 5V/2A inputs.
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High-Definition LCD Display: Real-time monitoring of charging status (CHG), current, voltage, charged capacity, and battery type (Li-ion, Ni-MH, LiFePO4, 1.5V) for each of the 4 independent slots.
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Professional Capacity Tester (Grad Mode): Long-press the MODE button to enter Grad mode. It automatically charges, discharges, and recharges the battery to accurately measure its true capacity (in mAh/mWh), helping you identify aging or low-quality cells.
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Microcurrent Battery Activation: The VX4 V2 can safely detect and apply a precise microcurrent to revive over-discharged (0V) batteries, bringing dead cells back to life.
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Mixed Compatibility with Dual Mode: Supports Li-ion 3.6/3.7V, Li-ion 1.5V, LiFePO4 3.2V, and NiMH 1.2V batteries. Manually switch between Standard and LiFePO4 modes via the C/V button to ensure safe charging for 3.2V cells.
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Multiple Adjustable Current Levels: Easily set charging currents via the C/V button to suit different battery sizes and capacities: 3A / 2A / 1A / 0.5A / 0.25A.
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8-Layer Intelligent Safety Protection: Equipped with smart detection, precise cut-off, overcurrent, overcharge, overvoltage, short circuit, reverse polarity protection, and a soft-start function.
【Parameters & Specifications】
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Brand: XTAR
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Model: VX4 V2
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Input: PD2.0(12V=1.67A) / QC3.0(9V=2A) / 5V=2A (USB Type-C)
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Charging Current: 3A x 1 / 2A x 2 / 1A x 4 / 0.5A x 4 / 0.25A x 4
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Charge Cut-off Voltage: 3.6/3.7V Li-ion: 4.20V ±0.05V | 1.5V Li-ion: N/A | 3.2V LiFePO4: 3.65V ±0.05V | 1.2V NiMH: 1.45V ±0.1V
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Cut-off Current: ≤150mA
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Compatible Batteries: 3.6/3.7V Li-ion (10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650) | 3.2V LiFePO4 | 1.5V Li-ion (AAA, AA) | 1.2V NiMH (AAA, AA, A, SC, C, D)
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Operating Temp: -10℃ to 40℃
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Dimensions: 172mm × 130mm × 41.5mm
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Weight: 315g
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Note: Batteries are NOT included.
【Applications】
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Professional Battery Testing: Hobbyists and technicians testing the true capacity of old or new batteries.
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Extreme Fast Charging: Charging high-capacity single 21700 or 26650 batteries at 3A speed with a PD adapter.
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Mixed Device Households: Handling multiple types of batteries (Li-ion for flashlights, NiMH for remotes) in one device.
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Battery Revival: Bringing old, over-discharged cells back to life with microcurrent activation.
【Frequently Asked Questions (FAQ)】
Q1: Does this charger come with batteries?
A1: NO. The XTAR VX4 V2 is sold as a charger unit only. You need to purchase batteries separately.
Q2: Why does it not support charging 3.6V/3.7V and 3.2V batteries at the same time?
A2: This is a built-in safety feature of the internal power management system. Charging different chemistry batteries simultaneously would require different voltage outputs, which could cause damage to the internal circuits. You can, however, set the VX4 V2 to Standard Mode to charge Li-ion, or switch to LiFePO4 mode to charge 3.2V cells.
Q3: How do I test the real capacity of my battery?
A3: Long-press the MODE button to enter "Grad" mode. The charger will then automatically discharge and recharge the battery to calculate its exact mAh or mWh capacity. This helps you identify if a battery is losing capacity.
Q4: What is the fastest way to charge my 21700 battery?
A4: Use a high-quality Type-C PD 20W (12V) wall adapter and select the 3A setting via the C/V button. This will deliver maximum power to a single slot.
Q5: Can I charge a 1.5V Li-ion battery on this charger?
A5: Yes. The VX4 V2 is one of the few chargers on the market that can safely charge 1.5V Li-ion (AAA/AA) batteries. It has an optimized charging algorithm specifically for this type of cell.
Shipping and Returns
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Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
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Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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Easy Returns: We want you to be completely satisfied. If you're not, you can return your product within 30 days of receiving your order. Please ensure the items are unused and in their original condition. For return instructions, please contact our support team.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security
Refund Policy
OneAndes Return & Refund Policy
At OneAndes, we are committed to providing high-quality cylindrical lithium-ion batteries for your drones, vacuums, garden tools, and other power needs. If you are not completely satisfied with your purchase, we are here to help. Please read our full return policy below before initiating a return.
1. Return Window
You have 30 calendar days from the date you received your item(s) to request a return. Any return request submitted after 30 days will not be eligible for a refund or exchange.
2. Eligibility Conditions
To qualify for a return, all items must meet the following conditions:
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Condition: Items must be unused, undamaged, and in the same condition that you received them.
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Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
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Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
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Batteries that have been installed, used, or show any signs of wear.
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Items marked as “Final Sale” or “Clearance” at the time of purchase.
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Customized or special-order products.
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Gift cards.
If a returned item fails to meet these conditions, we reserve the right to deny the return or charge a restocking fee.
3. How to Initiate a Return
Follow these steps to return your product:
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Contact Us: Email our support team at support@oneandes.com with your order number and the reason for return. We aim to respond to all return requests within 24 hours on business days.
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Receive RMA: We will provide you with a Return Merchandise Authorization (RMA) number and return instructions. Do not ship any item without an RMA number.
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Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
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Ship to Our US Warehouse: Ship the package to the following address:
OneAndes Returns
10320 6th St
Rancho Cucamonga, CA 91730
USA*Important: Lithium-ion batteries are classified as hazardous materials (Class 9). Please follow the shipping guidelines provided in Section 4 below. We recommend using a trackable shipping service and purchasing shipping insurance, as we cannot guarantee receipt of your returned item.*
4. Return Shipping Costs
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Defective or Incorrect Items: If the item you received is defective, damaged in transit, or different from what you ordered, OneAndes will cover the return shipping cost. In this case, we will provide you with a prepaid return shipping label.
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Buyer’s Remorse / Non-Defective Returns: If you are returning an item for any other reason (e.g., no longer needed, ordered the wrong model), you are responsible for the return shipping costs. You must prepay the return shipping cost using a trackable carrier that accepts lithium batteries. We do not provide prepaid return labels for non-defective returns.
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Lithium Battery Shipping Regulations: By law, all returns must be shipped in compliance with applicable dangerous goods regulations. We will provide guidance on proper packaging and labeling. Failure to comply may result in carrier refusal, seizure, or additional fees. We are not responsible for returned items lost or rejected by the carrier due to improper shipping.
5. Refunds
Once we receive and inspect your return at our Rancho Cucamonga, CA facility, we will notify you via email of the approval or rejection of your refund.
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Approved Refunds: If approved, your refund will be processed to your original method of payment within 5 to 10 business days. Please note that depending on your bank or credit card issuer, it may take additional time for the credit to appear on your statement.
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Partial Refunds: In certain situations, only partial refunds may be granted:
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Items not in original condition, missing parts, or damaged for reasons not due to our error.
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Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
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Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
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Restocking Fee: We do not charge a restocking fee for defect-free returns, but we may deduct the return shipping cost, which will be deducted from your refund.
6. Exchanges
We replace items only if they are defective or damaged upon arrival. If you need to exchange a defective item for the same product, please contact us at support@oneandes.com. Exchanges are subject to product availability.
If you ordered the wrong battery size or model, please follow the standard return process above and place a new order for the correct item.
7. Damaged or Missing Items
If your package arrives visibly damaged, please take photos of the package before opening and contact us immediately. We will work with the shipping carrier to file a claim and arrange for a replacement or refund. Damaged or missing item claims must be reported within 7 calendar days of delivery. For immediate assistance, you may also call us at (213) 316-8849.
8. Order Cancellation
You may cancel your order without penalty if it has not yet been shipped. To cancel, email us at support@oneandes.com as soon as possible. If the order has already been processed or shipped, you will need to follow the standard return process upon receipt.
9. Warranty
All OneAndes batteries are backed by a 12-month limited warranty against defects in materials and workmanship. This warranty does not cover damage caused by misuse, improper charging, unauthorized modifications, normal wear and tear, or use outside of manufacturer specifications. For warranty claims, please contact our support team.
10. Contact Us
If you have any questions about our Return & Refund Policy, please reach out:
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Email: support@oneandes.com
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Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
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Mailing Address: 10320 6th St, Rancho Cucamonga, CA 91730, USA
We aim to respond to all inquiries within 24 hours during business days. Please include your order number for faster assistance.