XTAR VC4 Smart Charger with 16340 650mAh 3.7V Protected Battery Bundle | LCD Display & 0V Activation for Compact Flashlights
Description
Product Description
This bundle combines the versatile XTAR VC4 4-slot smart charger with compact XTAR 16340 650mAh 3.7V protected lithium-ion rechargeable batteries. (Available in 1-Pack or 2-Pack options). The included 16340 battery delivers 650mAh capacity with a 3.7V nominal voltage, a built-in protection board, and a 0.95A maximum continuous discharge current. Engineered for durability, this battery maintains less than 20% capacity loss after 300 charge cycles, ensuring long-term reliability. The XTAR VC4 charger features an innovative LCD gauge-style screen, original 0V activation technology to revive over-discharged cells, and independent four-slot mixed charging. This kit offers a complete, safe, and durable power solution for your compact electronic devices.
Key Features
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Complete Compact Power Kit: Includes one XTAR VC4 4-slot charger (with cable and pouch) and one or two XTAR 16340 650mAh 3.7V protected batteries based on your selection.
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Durable Battery Specifications: Features 650mAh true capacity, a 3.7V nominal voltage, and a 0.95A maximum continuous discharge current. The integrated protection board ensures safety against overcharge, over-discharge, and short circuits.
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Extended Cycle Life: Designed to maintain over 80% of its original capacity even after 300 recharge cycles, offering long-term value and dependable performance over time.
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Innovative LCD Gauge Screen: The VC4 charger displays real-time battery voltage, charging current, capacity (mAh), and slot information, allowing you to accurately monitor the charging status.
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Original 0V Activation Technology: Safely revives over-discharged lithium batteries that have dropped to an extremely low voltage, restoring them to a usable state.
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Independent 4-Slot Mixed Charging: Each slot operates independently. The charger supports safe mixed charging of 3.6V/3.7V Li-ion and 1.2V Ni-MH/Ni-CD batteries simultaneously without any interference.
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Smart Safety Warnings & Auto Stop: The screen clearly displays "Full" when fully charged, "null" when the battery is damaged, and "Err" when inserted with reversed polarity. The charging process automatically stops once the battery is fully charged.
Product Parameters
Charger (XTAR VC4):
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Input Power: DC 5.0V 2.1A (USB power supply)
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Charging Current Options: 0.5A (500±50mA) / 1.0A (1000±80mA)
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Charging Cut-off Voltage: 4.20V ± 0.05V (Li-ion) / 1.45V ± 0.1V (Ni-MH)
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Operating Temperature: 0 - 40°C
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Dimensions: L149 x W115 x H35 mm
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Net Weight: 210g
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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 Li-ion Sizes: 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650
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Supported Ni-MH/Ni-CD Sizes: AAAA, AAA, AA, A, SC, C, D
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Note: It supports standard protected 16340 batteries, but does not support protected 20700 and 21700 batteries.
Battery (XTAR 16340 650mAh):
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Brand: XTAR
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Model: 16340 Rechargeable Li-ion Battery
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Nominal Capacity: 650mAh
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Nominal Voltage: 3.7V
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Protection Board: Built-in (Protected)
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Max Continuous Discharge Current: 0.95A
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Weight: 17g
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Dimensions: φ16.4 ± 0.3mm (Diameter) x H34.3 ± 0.5mm (Height)
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Cycle Life Performance: Capacity loss less than 20% after 300 cycles.
Applications
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Ideal power supply for compact EDC flashlights, pen lights, and tactical pocket lights.
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Reliable energy source for laser pointers, small remote-control toys, and portable gadgets.
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Efficient charging and maintenance for 16340 batteries used in specialized electronic devices.
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Mixed charging solution for both 3.7V Li-ion and 1.2V Ni-MH batteries used in household items.
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A long-lasting and cost-effective backup power kit for emergency gear and outdoor equipment.
Frequently Asked Questions (FAQ)
Q1: What is included in this bundle?
A1: The bundle includes one XTAR VC4 4-slot charger, one USB charging cable, one storage pouch, a user manual, and either 1 or 2 units of the XTAR 16340 650mAh 3.7V protected batteries based on your variant selection.
Q2: Is this 16340 battery compatible with the VC4 charger?
A2: Yes. With a compact diameter of 16.4mm and a height of 34.3mm, this 16340 battery fits securely and safely into the VC4 charger's spring-loaded slots for efficient charging.
Q3: What does the 300-cycle lifespan feature mean for this battery?
A3: It means after 300 full charge and discharge cycles, the battery will still retain more than 80% of its original 650mAh capacity. This guarantees long-term reliability and value for money.
Q4: What is the maximum charging current of the VC4 charger?
A4: The XTAR VC4 offers two adjustable charging currents: 0.5A and 1.0A. It supports up to a 1.0A charging current per slot when charging four batteries simultaneously.
Q5: How does the "0V Activation" feature work?
A5: If your lithium battery has been over-discharged to an extremely low voltage (near 0V), the VC4 will apply a safe, low current to gently reactivate the battery's internal protection circuit, often successfully restoring it to a chargeable and usable condition.
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
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Security

Great little bundle. The 16340 battery is perfect for my laser pointer. The VC4 charger tops it up quickly and safely. Very happy.
If you have a 16340 light, this bundle is a no-brainer. The XTAR quality is there, and the battery is long-lasting.
The battery's protection circuit adds length but fits the VC4. It works in my compact flashlight. The charger's LCD gauge is a nice touch.
The 650mAh capacity is real. I use it in a UV light for leak detection. The VC4 charger is a reliable, multi-chemistry workhorse.
My emergency light uses a 16340. This bundle means I always have a charged battery. The VC4 sits on my desk and handles all my other cells.
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.
