XTAR VC8S 8-Slot Smart Battery Charger – QC 3.0 Fast Charging, LCD Display & 0V Activation for Li-ion, Ni-MH & Ni-Cd (18650, 21700, AA, AAA)
Description
All-New 8-Bay Type-C LCD | Multifunctional Charger for Li-ion & NiMH Batteries
Compatible with 3.6V/3.7V Li-ion Batteries · 1.2V NiMH Batteries · 3A Charging Current
Key Features at a Glance
| Feature | Description |
|---|---|
| Capacity Test (Grad.) | Charge–discharge–charge low-current analysis accurately measures true battery capacity, identifying aged or low-quality batteries |
| Internal Resistance Test (IR) | Check battery health in advance to plan maintenance and select the best-performing cells |
| Storage Mode (Store) | Charges/discharges batteries to their rated storage voltage before long-term storage or shipping, extending battery lifespan |
| PD Fast Charging | Type-C input paired with a PD adapter; at 15V/3A input, up to 3A on 2 bays simultaneously |
| Smart Battery Recognition | Automatically identifies Li-ion vs. NiMH batteries and applies the optimal charging strategy |
| Reverse-Polarity Protection | Displays "Err" automatically if a battery is inserted backwards, preventing damage |
| "0V" Activation Repair | Upgraded over-discharge recovery technology improves battery repair success rate |
| Adjustable Current | 5 manually selectable current levels: 3A / 2A / 1A / 0.5A / 0.25A |
Broad Compatibility – One Charger for (Almost) Everything
Compatible battery length: 30–80mm
3.6V/3.7V Li-ion/IMR/INR/ICR batteries: 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650 (Charges batteries with or without a protection circuit board)
1.2V NiMH batteries: AAA, AA, A, SC, C (Note: Not compatible with 1.5V rechargeable lithium batteries)
Flexible Current Selection
8 independent bays (CH1–CH8) with selectable charging currents:
- 3000mA: 2 bays charging simultaneously (select 1 bay from CH1–CH4, and 1 bay from CH5–CH8)
- 2000mA: 4 bays charging simultaneously (select 2 bays from CH1–CH4, and 2 bays from CH5–CH8)
- 1000mA: All 8 bays charging simultaneously
- 500mA: All 8 bays charging simultaneously
- 250mA: All 8 bays charging simultaneously
Note: NiMH (1.2V) charging current is fixed at 0.5A by default and cannot be adjusted.
Smart Recognition, Optimized Charging Strategy
Li-ion Charging: Trickle – Constant Current – Constant Voltage (TC-CC-CV) A dedicated charging profile for lithium-ion cells that matches current intelligently for fast, safe charging.
NiMH Charging: Proprietary New Charging Technology A high-precision built-in chip enables faster charging with lower temperature rise and more accurate full-charge detection, automatically stopping once the battery is full for a better charging experience.
Button Operations
| Button | Single Press | Long Press |
|---|---|---|
| Mode | Cycles display: Charging Current (Cur.), Charged Capacity (Cap.), Internal Resistance (IR) | Switches operating mode: Capacity Test (Grad.), Storage (Store), Charging (Cur.) |
| Curr. | After power-on, cycles through current levels in Cur. mode | Puts the LCD screen to sleep |
Type-C Input with PD Fast Charging
Equipped with a Type-C input port; pair with a PD adapter for faster, more efficient charging.
At 15V/3A input, charging speeds can reach:
- 3A × 2 bays
- 2A × 4 bays
- 1A × 8 bays
Comprehensive Safety Protection
Reverse-Polarity Protection If a battery is inserted backwards, the screen displays "Err." Simply reorient the battery to resume normal charging.
"0V" Activation – Over-Discharge Battery Repair XTAR's upgraded over-discharge recovery technology improves the repair success rate for deeply discharged batteries. If recovery fails or an abnormality occurs, the LCD displays "Err" — remove the battery promptly.
Specifications
| Item | Spec |
|---|---|
| Model | VC8S |
| Net Weight | 452g |
| Input | QC3.0 (9V=2A / 5V=2A), PD3.0 (12V=3A) |
| Constant Charging Current (4.2V) | 3A×2 / 2A×4 / 1A×8 / 0.5A×8 / 0.25A×8 |
| Constant Charging Current (1.45V) | 0.5A×8 |
| Charge Cutoff Voltage | 4.20±0.05V / 1.45±0.1V |
| Charge Cutoff Current | ≤150mA |
| Operating Temperature | 0–40°C |
| Dimensions | L210mm × W152mm × H39mm |
Package Contents (Standard)
- XTAR VC8S Charger × 1
- User Manual × 1
- USB-C to USB-C Charging Cable × 1
- USB-A to USB-C Charging Cable × 1
Frequently Asked Questions (FAQ)
Q1: What is the advantage of the "Capacity Test" (Grad.) function?
A: The "Grad." mode performs a full charge–discharge–recharge cycle on your battery. This is not just a voltage check—it measures the actual milliamp-hour (mAh) capacity the battery can hold. This is the only way to truly verify if a battery is reaching its rated capacity, or if it has aged and needs to be retired from your high-drain devices.
Q2: How does the Internal Resistance (IR) test help me?
A: Internal resistance is a key indicator of a battery's health. As batteries age or get damaged, their IR increases. This causes voltage sag under load and excessive heat. The VC8S's IR test lets you quickly check the health of your entire battery collection at a glance, allowing you to pair cells with matched IR for use in custom battery packs.
Q3: What is "Storage Mode" (Store) and why would I use it?
A: Storage mode is designed for lithium-ion batteries that you don't plan to use for a long period. It automatically charges or discharges your battery to its optimal long-term storage voltage (typically around 3.6V–3.7V). Storing Li-ion batteries fully charged or completely empty can permanently degrade their lifespan. This mode prevents that.
Q4: How do I achieve the maximum 3A charging speed?
A: To achieve 3A charging, you need two things:
A compatible PD wall adapter capable of delivering at least 15V/3A (45W) or 9V/3A (27W).
You must use the charger's grouped slots: CH1–CH4 and CH5–CH8.
3A: 2 bays simultaneously (1 bay from the left group, 1 from the right group).
2A: 4 bays simultaneously (2 from the left, 2 from the right).
1A: All 8 bays simultaneously.
Q5: Can I charge Ni-MH batteries at a faster current?
A: No. The VC8S automatically fixes the charging current for 1.2V Ni-MH batteries at 0.5A × 8 slots. This is an optimal, safe current specifically designed to minimize heat buildup and maximize the lifespan of your AA and AAA Ni-MH batteries.
Q6: What does the "0V Activation" feature do?
A: If your Li-ion battery has been over-discharged to the point where a standard charger won't even recognize it, the VC8S's "0V Activation" technology attempts to apply a very low, controlled micro-current to safely revive the cell. While not a guarantee for every battery, it significantly increases the chances of salvaging deeply discharged batteries that would otherwise be discarded.
Q7: What is the difference between the VC8 and the VC8S?
A: The VC8S is the upgraded successor to the VC8. Its primary upgrades include a USB-C input with support for PD 3.0 fast charging (allowing for higher wattage inputs and faster charging speeds), an upgraded "0V" activation circuit for better recovery rates, and an upgraded chip for more precise Ni-MH charging detection.
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.