Description
Shipping and Returns
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

Free Shipping on Orders Over $65
This bundle pairs the premium XTAR VC4 Plus 4-slot smart charger with high-capacity XTAR 21700 4900mAh rechargeable lithium-ion batteries. (Available in 1-Pack or 2-Pack options). The included 21700 battery delivers a massive 4900mAh capacity with a 3.6V nominal voltage and supports a robust 10A maximum continuous discharge current. The VC4 Plus charger is universally compatible with a vast array of cylindrical batteries (from 10440 up to 32650) and offers an intuitive LCD display, QC3.0 3A fast charging, 0V battery activation, and a precise 4.20V ± 0.05V charging cutoff. This versatile kit serves as a reliable power solution for a wide range of devices.
Massive Battery Capacity: The XTAR 21700 battery features an impressive 4900mAh capacity with a 3.6V rated voltage, providing exceptional runtime for high-drain applications.
Robust Power Output: Supports a maximum continuous discharge current of 10A, delivering consistent and stable power for heavy-duty electronics.
Extensive Charging Compatibility: The VC4 Plus charger supports 3.6V/3.7V Li-ion batteries (10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650) and 1.2V Ni-MH/Ni-CD batteries (AAA, AA, A, SC, C).
Precision Charger Performance: Offers up to 3A single-slot fast charging (requires QC3.0 adapter), an LCD screen for real-time capacity, current, and voltage monitoring, and an ultra-precise 4.20V ± 0.05V charging cut-off voltage for Li-ion.
Professional Battery Care Functions: Features 0V activation to recover over-discharged batteries, a Capacity Test mode, and a Storage mode to automatically maintain the battery at its optimal 3.7V long-term storage voltage.
Wide Application Compatibility: Ideal for intercoms, high-lumen flashlights, portable speakers, radios, RC aircraft, camcorders, microphones, power banks, and custom battery packs.
Charger (XTAR VC4 Plus):
Input: QC3.0 USB Type-C (9V⎓2A, 18W Max)
Charging Current: Single slot 3A Max / Dual slot 2A Max / Four slot 1A or 0.5A Max (per slot)
Charging Cut-off Voltage: 4.20V ± 0.05V (Li-ion)
Charging Cut-off Current: ≤120mA
Operating Temperature: 0 - 40°C
Dimensions: L156 x W115.5 x H35 mm
Compatible Battery Types: 3.6V / 3.7V Li-ion (IMR/INR/ICR), 1.2V Ni-MH / Ni-CD
Compatible Battery Sizes (Li-ion): 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650, 32650 (Flat Top)
Compatible Battery Sizes (Ni-MH): AAA, AA, A, SC, C
Battery (XTAR 21700 4900mAh):
Brand: XTAR
Model: 21700 Rechargeable Li-ion Battery
Nominal Capacity: 4900mAh
Nominal Voltage: 3.6V
Charging Cut-off Voltage: 4.2V
Max Continuous Discharge Current: 10A
Weight: 71g
Dimensions: 21.4 ± 0.3mm (Diameter) x 74.8 ± 0.5mm (Height)
Note: Manual measurement may have an error margin of 0.5mm.
Intercoms, two-way radios, portable speakers, and radios.
High-lumen tactical flashlights and EDC lighting equipment.
Remote-controlled aircraft (RC drones and model airplanes).
Digital camcorders, professional video cameras, and wireless microphones.
Mobile power banks and custom battery pack assemblies.
Q1: What is included in this bundle?
A1: The bundle includes one XTAR VC4 Plus 4-slot smart charger, one USB Type-C cable, and either 1 or 2 units of the XTAR 21700 4900mAh 10A batteries.
Q2: Is this 21700 battery compatible with the VC4 Plus charger?
A2: Yes, the VC4 Plus features extra-wide slots designed specifically to accommodate larger batteries like 21700 (21.4mm x 74.8mm) safely.
Q3: What does the 10A discharge current mean for my applications?
A3: A 10A max discharge current means this battery can safely power devices that require high and sustained current, such as high-lumen flashlights and powerful RC motors.
Q4: What is the purpose of the charger's "Storage Mode"?
A4: The Storage Mode will automatically charge or discharge the battery to its optimal long-term storage voltage of 3.7V, significantly slowing down capacity degradation over time.
Q5: How does the charger prevent overcharging?
A5: The XTAR VC4 Plus has an ultra-precise charging cutoff voltage of 4.20V ± 0.05V. Once the battery reaches this level, the charger automatically stops supplying power.
Free Shipping: Enjoy free shipping on all orders over $65. For orders under $65, the shipping cost is $8.99.
Delivery Time: Once shipped, orders typically arrive within 7–15 business days.
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 methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security

Upgraded from 18650s to these 21700 batteries. With the VC4 Plus, I get reliable power and detailed information. The bundle price was great.
The quality of XTAR is undeniable. Both the charger and the 21700 cells are well made. The fast charge works best with a QC3.0 plug. Highly recommend.
I keep this bundle for power outages. The 21700 battery powers my USB adapter for phones. The charger works off a power bank. Endless possibilities.
These 10A 4900mAh cells handle my vape and drone equally well. The VC4 Plus gives a detailed readout. I appreciate the capacity grading feature.
My drone ground station runs on these. The bundle gives me the confidence of a full charge each time. The charger display is bright even in sun.
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:
Condition: Items must be unused, undamaged, and in the same condition that you received them.
Packaging: Items must be returned in their original packaging with all accessories, manuals, and protective covers intact.
Proof of Purchase: A valid receipt, order confirmation email, or proof of purchase must accompany all returns.
Non-Returnable Items:
Batteries that have been installed, used, or show any signs of wear.
Items marked as “Final Sale” or “Clearance” at the time of purchase.
Customized or special-order products.
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:
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.
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.
Pack Securely: Place the item in its original packaging, include all accessories, and clearly write the RMA number on the outside of the box.
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
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.
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.
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.
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.
Partial Refunds: In certain situations, only partial refunds may be granted:
Items not in original condition, missing parts, or damaged for reasons not due to our error.
Items returned more than 30 days after delivery (reviewed on a case-by-case basis).
Non-Refundable Fees: Original shipping charges are non-refundable unless the return is due to our error (defective product or incorrect shipment).
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:
Email: support@oneandes.com
Phone: (213) 316-8849 (Mon-Fri, 9 AM – 5 PM Pacific Time)
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.
Top Brands
Samsung LG Panasonic Molicel EVE
Full Size Range
From 10440 to 4680
B2B Experts
Bulk Discounts Global Logistics
Genuine & Safe
A‑grade cells & Certified
