XTAR VC4 Plus Smart Battery Charger 4-Bay | 3A Fast Charge for 3.6V/3.7V Li-ion 18650 21700 & 1.2V Ni-MH AA AAA
Description
Product Description
The XTAR VC4 Plus is a flagship 4-slot multifunctional smart battery charger designed for both 3.6V/3.7V Li-ion and 1.2V Ni-MH/Ni-CD cylindrical batteries. Equipped with a high-contrast LCD screen, it delivers real-time charging data including capacity, current, internal resistance, and precise voltage. Powered by a 9V QC3.0 USB Type-C input, it supports a maximum 3A fast charge in single-slot mode. Beyond standard charging, the VC4 Plus offers professional maintenance features: 0V activation to revive over-discharged batteries, capacity testing to measure true battery health, and a storage mode that automatically charges or discharges batteries to their optimal long-term storage voltage (3.7V for Li-ion, 1.2V for Ni-MH). Smart temperature control and global safety certifications guarantee secure and reliable charging.
Key Features
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Advanced LCD Display: Simultaneously displays real-time charging capacity (mAh), current (mA), internal resistance (mΩ), and operational modes across all 4 slots.
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QC3.0 Fast Charging with Voltage Adaptability: Supports input voltage of 9V (QC3.0) for up to 3A single-slot charging; automatically adjusts power output for 2A dual-slot and 1A/0.5A four-slot configurations.
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Ultra-Precise Voltage Regulation: Provides highly accurate charging cutoff voltages of 4.20V ± 0.05V for Li-ion batteries and 1.45V ± 0.1V for Ni-MH/Ni-CD batteries to prevent overcharging.
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Broad Voltage Compatibility: Directly supports 3.6V/3.7V lithium-ion cells (10440 to 32650) and 1.2V nickel-metal hydride/nickel-cadmium cells (AAA, AA, A, SC, C).
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Intelligent Charging Algorithms: Employs TC-CC-CV (Trickle-Constant Current-Constant Voltage) for Li-ion and precise pulse charging with -ΔV and 0ΔV detection for Ni-MH, ensuring a full charge without damage.
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Advanced Battery Care Modes: Includes 0V activation to rescue dead batteries; Capacity Test mode (charge-discharge-charge) to reveal true capacity; Storage mode for maintaining batteries at safe storage voltage to prolong lifespan.
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Comprehensive Safety Certifications: Built-in temperature control, short-circuit protection, and overcurrent protection. Certified with RoHS, CE, and FCC, and covered by global insurance.
Product Parameters
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Brand & Model: XTAR VC4 Plus
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Input Power: QC3.0 USB Type-C (9V ⎓ 2A, 18W Max)
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Voltage Specifications:
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Charging Cut-off Voltage: 4.20V ± 0.05V (Li-ion) / 1.45V ± 0.1V (Ni-MH)
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Compatible Battery Voltage: 3.6V / 3.7V (Li-ion), 1.2V (Ni-MH/Ni-CD)
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Long-term Storage Voltage: 3.7V (Li-ion), 1.2V (Ni-MH)
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Charging Current Output: Single Slot 3A Max / Dual Slot 2A Max / Four Slot 1A or 0.5A Max (per slot)
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Charging Cut-off Current: ≤120mA
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Operating Temperature: 0 - 40°C
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Product Dimensions: L156 x W115.5 x H35 mm
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Supported Battery Types: 3.6V/3.7V Li-ion (IMR/INR/ICR), 1.2V Ni-MH/Ni-CD
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Supported Battery Sizes (Li-ion): 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650 (Flat Top)
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Supported Battery Sizes (Ni-MH): AAA, AA, A, SC, C
Applications
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Charging high-drain 3.7V 18650/21700 batteries for EDC flashlights and tactical lights.
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Providing reliable 1.2V power sources for outdoor headlamps and camping lanterns.
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Managing power for remote control (RC) toys and drones.
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Daily maintenance and charging for 1.2V Ni-MH AA/AAA batteries used in digital cameras, wireless microphones, and game controllers.
Frequently Asked Questions (FAQ)
Q1: What are the exact charging cutoff voltages for Li-ion and Ni-MH batteries?
A1: The XTAR VC4 Plus is calibrated to a highly precise charging cutoff voltage of 4.20V ± 0.05V for 3.6V/3.7V Li-ion batteries, and 1.45V ± 0.1V for 1.2V Ni-MH/Ni-CD batteries to ensure maximum capacity without overcharging risks.
Q2: How do I achieve the maximum 3A charging speed?
A2: To achieve 3A fast charging, you must use a QC3.0 (9V/2A) or higher power adapter, and charge only one battery in a single slot. The charger will automatically adjust the output voltage and current based on the battery type.
Q3: What does the "Storage Mode" do regarding voltage?
A3: Storage Mode intelligently charges or discharges the battery to its optimal long-term storage voltage (3.7V for Li-ion, 1.2V for Ni-MH). Maintaining batteries at these specific voltages significantly prevents capacity degradation during prolonged inactivity.
Q4: What is the "0V Activation" feature?
A4: Over-discharged batteries may drop to 0V and fail to charge in regular chargers. The VC4 Plus features 0V activation, which applies a safe low-voltage current to gently revive and awaken these dead cells, restoring them to a usable voltage level.
Q5: Can I mix different voltage batteries (3.7V and 1.2V) in the slots?
A5: Yes. The VC4 Plus features independent circuit control for each slot, allowing you to simultaneously charge a 3.7V Li-ion battery in one slot and a 1.2V Ni-MH battery in another without any electrical interference.
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
After using a few cheap chargers, the VC4 Plus is a breath of fresh air. Accurate, fast, and safe. The 0V activation brought back a fully drained cell.
With a QC3.0 adapter, this thing is fast. I can get a pair of 18650s ready in just over an hour. The auto restart function is handy if power cuts out.
The screen layout is intuitive. I can see each channel's voltage, current, and charged capacity. It even tells me the USB input mode. Love the detailed info.
I was hesitant about 3A, but this charger manages heat well. My 26650 cells barely get warm. The automatic current selection picks the right speed. Great charger.
My collection of 18650 and 21700 batteries all get charged here. The 3A max is great for a quick top-up before a night hike. The voltage accuracy matches my multimeter.
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.