XTAR VC4SL Smart Charger with 18650 3500mAh 10A Button Top Battery Bundle | 3A Fast Charging with Capacity & IR Test for Flashlights
Description
Product Description
This bundle pairs the professional-grade XTAR VC4SL 4-slot smart charger with XTAR 18650 3500mAh high-performance lithium-ion rechargeable batteries (Available in 1-Pack or 2-Pack options). The included 18650 battery features a 3500mAh true capacity, 3.6V nominal voltage, 2.5V discharge cut-off, and a robust 10A maximum continuous discharge current. It comes with a built-in protection board and a button-top positive terminal for wide compatibility. The VC4SL charger supports QC3.0 3A Type-C fast charging and provides advanced battery diagnostics, including Capacity Grading to reveal true mAh, Internal Resistance (IR) testing to spot aging cells, and a Storage mode that automatically maintains batteries at the ideal 3.7V long-term storage voltage. This kit offers an all-in-one, intelligent power maintenance solution.
Key Features
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Complete Professional Kit: Contains one XTAR VC4SL 4-slot smart charger (with Type-C cable & storage pouch) and one or two XTAR 18650 3500mAh 10A protected button-top batteries.
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High-Capacity Battery Specs: Boasts 3500mAh real capacity, 3.6V nominal voltage, 2.5V discharge cut-off, and a 10A max continuous discharge. It features an ultra-low internal resistance of ≤45 mΩ and supports over 800 recharge cycles.
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Safe Battery Design: Equipped with a built-in PCB protection board to prevent overcharge, over-discharge, and short circuits. The button-top design fits perfectly into standard flashlights and high-drain devices.
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Professional Charger Diagnostics: The VC4SL features an LCD screen, offering a Capacity Grading mode (charge-discharge-charge to measure true mAh) and an accurate Internal Resistance test to easily identify weak or degraded batteries.
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QC3.0 3A Fast Charging: Supports 9V QC3.0 Type-C input, delivering 3A single-slot fast charging, with adjustable 2A/1A/0.5A/0.25A currents for multi-slot charging.
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Intelligent Storage Mode & Precision Voltage: The Storage mode automatically charges or discharges the 18650 battery to its optimal storage voltage of 3.7V, preventing degradation. The charger offers a precise 4.20V ± 0.05V charging cut-off voltage to protect the battery from overcharging.
Product Parameters
Charger (XTAR VC4SL):
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Input Power: QC3.0 Type-C (9V/2A, Max 18W)
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Constant Charging Current: 3Ax1 / 2Ax2 / 1Ax4 / 0.5Ax4 / 0.25Ax4
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Charging Cut-off Voltage: 4.20V ± 0.05V (Li-ion) / 1.45V ± 0.1V (Ni-MH)
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Charging Cut-off Current: ≤120mA
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Optimal Storage Voltage: 3.7V (Li-ion), 1.2V (Ni-MH)
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Operating Temperature: 0°C - 40°C
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Dimensions: L156 x W115 x H35 mm
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Net Weight: 212g
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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 (Flat Top)
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Supported Ni-MH/Ni-CD Sizes: AAA, AA, A, SC, C
Battery (XTAR 18650 3500mAh):
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Brand: XTAR
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Model: 18650 Li-ion Rechargeable Battery
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Nominal Capacity: 3500mAh
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Nominal Voltage: 3.6V
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Discharge Cut-off Voltage: 2.5V
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Max Continuous Discharge Current: 10A
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Internal Resistance: ≤45 mΩ
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Cycle Life: 800+ cycles
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Protection Board: Built-in (Protected)
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Positive Terminal: Button Top
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Storage Temperature: -20°C~60°C (Best ≤25°C)
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Dimensions: Φ18.4±0.3 x H69±0.5 mm
Applications
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Provides reliable and safe high-drain power for EDC tactical flashlights and searchlights.
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Professional capacity grading and battery health maintenance for daily photography equipment and RC models.
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Backup power supply for portable emergency radios and intercom devices.
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Maintenance and long-term storage of batteries for outdoor survival and camping gear.
Frequently Asked Questions (FAQ)
Q1: What is included in this bundle?
A1: The bundle includes one XTAR VC4SL smart charger, one Type-C cable, one user manual, one portable storage pouch, and either 1 or 2 units of the XTAR 18650 3500mAh 10A protected button-top batteries depending on your selection.
Q2: Is the 18650 3500mAh button-top battery compatible with the VC4SL charger?
A2: Yes. The VC4SL features flexible spring-loaded slots. With a height of 69mm, this button-top battery fits securely and safely into the charger.
Q3: What does the 10A discharge current mean? Can it power heavy-duty tools?
A3: The 10A continuous discharge means it can safely power devices that draw up to 10 amps. It is ideal for powerful flashlights . It is not recommended for heavy power tools that require 20A or 30A to avoid safety risks.
Q4: What are the voltage specifics of the charger regarding this 18650 battery?
A4: When fully charging this 3.6V battery, the VC4SL utilizes an ultra-precise cut-off voltage of 4.20V ± 0.05V to prevent overcharging. If you use the Storage Mode, the charger will automatically regulate the battery to the optimal long-term storage voltage of 3.7V to maximize its lifespan.
Q5: How do I know when the battery is fully charged?
A5: When the battery reaches the 4.20V cut-off and the charging current drops below 120mA, the VC4SL LCD screen will flash "FULL". Additionally, the LED indicator will turn green to confirm it's ready to use.
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
If you want a charger that tests and great batteries, this bundle is it. The VC4SL is future-proof and these 3500mAh cells will last hundreds of cycles.
Needed button tops for a series light. These fit the VC4SL perfectly and the charger's display shows the health. The 10A burst is clean.
Replaced my old 2500mAh cells with these. The runtime difference is huge. The VC4SL is a smart charger that tells me everything I need.
My turbo light pulls 8A and these 10A cells handle it. The VC4SL charges them at 1A each. The grading mode helps me rotate them evenly.
The battery length fits the VC4SL without crushing springs. The button top makes perfect contact in my flashlights. The charger's test features are a bonus.
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.