XTAR MC4S 4-Bay Smart Charger with 18650 3500mAh 10A Protected Battery Bundle | Type-C Portable Kit for High-Drain Flashlights
Description
Product Description
This bundle combines the lightweight and portable XTAR MC4S 4-slot smart charger with high-performance XTAR 18650 3500mAh 10A protected lithium-ion rechargeable batteries. (Available in 1-Pack or 2-Pack options). The included 18650 battery delivers a massive 3500mAh true capacity, a 3.6V nominal voltage, and a robust 10A maximum continuous discharge current. It features a built-in protection board and button-top terminal for enhanced safety and broad device compatibility. The XTAR MC4S charger features four independent charging circuits, a universal Type-C input, smart battery type recognition, and 0V activation to revive over-discharged batteries. Weighing only 95g, this kit provides a highly portable, reliable, and powerful power solution for your high-drain electronics. (Note: MC4S is perfectly compatible with these standard 18650 protected cells; however, it does NOT support protected 20700 and 21700 batteries).
Key Features
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Complete High-Performance Power Kit: Includes one XTAR MC4S 4-slot charger (with USB cable) and one or two XTAR 18650 3500mAh 10A protected button-top batteries based on your selection.
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High-Capacity & High-Drain Battery Specs: Features 3500mAh true capacity, a 3.6V nominal voltage, a 2.5V discharge cut-off, and a 10A max continuous discharge. Built-in protection board and ultra-low internal resistance (≤45 mΩ) ensure safety and stable output. Supports 800+ recharge cycles for long-term reliability.
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4 Fully Independent Charging Slots: Each slot features independent circuit control, allowing you to safely mix charge Li-ion and Ni-MH/Ni-CD batteries without interference.
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Smart Battery Identification: Automatically recognizes battery types and applies the optimal charging strategy: TC-CC-CV (Trickle-CC-CV) for Li-ion batteries and precise 0ΔV / -ΔV detection for Ni-MH batteries.
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Intuitive LED Indicator Lights: Red light indicates charging or activation; Green light means fully charged, empty slot, or poor contact; Flashing red/green indicates reversed polarity (please correct immediately).
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0V Activation Technology: Built-in 0V activation feature safely revives and recovers over-discharged lithium batteries, breathing new life into dead cells.
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Type-C Input & Ultra-Portable Design: Modern Type-C port allows for easy power connection via wall adapters, laptops, or car chargers. The charger weighs just 95g and measures L100 x W97 x H26.5mm, making it perfect for travel and outdoor use.
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Comprehensive Safety Protections: Built-in overcurrent, overcharge, overvoltage, and short-circuit protections. Automatically stops charging when the battery is full.
Product Parameters
Charger (XTAR MC4S):
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Model: XTAR MC4S
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Input Power: DC 5V 2.1A (Type-C)
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Constant Charging Current: 1A x 2 / 0.5A x 4
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Charging Cut-off Voltage: 4.20 ± 0.05V (Li-ion)
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Charging Cut-off Current: ≤70mA
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Operating Temperature: 0 - 40°C
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Dimensions: L100 x W97 x H26.5 mm
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Net Weight: 95g
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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 Sizes: 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650 (Refer to physical slot limitations). Note: This charger does NOT support protected 20700 and 21700 batteries.
Battery (XTAR 18650 3500mAh):
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Brand: XTAR
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Model: 18650 Rechargeable Li-ion 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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Dimensions: Φ18.4±0.3 x H69±0.5 mm
Applications
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Reliable and powerful power supply for high-lumen EDC tactical flashlights and searchlights.
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Safe high-drain power source for 10A-rated electronic cigarettes and mods.
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Portable charging and maintenance solution for outdoor headlamps, camping gear, and survival kits.
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Efficient power management for RC drones, model aircraft, and hobby electronics.
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Convenient mixed charging for both 3.6V Li-ion and 1.2V Ni-MH household batteries.
Frequently Asked Questions (FAQ)
Q1: What is included in this bundle?
A1: The bundle includes one XTAR MC4S 4-slot smart charger, one USB-A to USB-C charging cable, one user manual, and either 1 or 2 units of the XTAR 18650 3500mAh 10A protected button-top batteries based on your selected variant.
Q2: Can this charger charge the protected 18650 batteries included in the kit?
A2: Yes. The XTAR MC4S perfectly accommodates standard protected 18650 batteries like the ones in this kit. However, it does NOT support protected 20700 and 21700 batteries, so please do not use those.
Q3: What does the flashing Red and Green LED lights mean?
A3: When the LED lights flash between red and green, it indicates the battery has been inserted with reversed polarity. Please immediately remove the battery and insert it in the correct orientation.
Q4: What is the maximum charging current of the MC4S?
A4: The MC4S supports a maximum charging current of 1A for 2 slots simultaneously, or 0.5A for all 4 slots simultaneously.
Q5: Can I charge a Li-ion and a Ni-MH battery at the same time?
A5: Yes. The MC4S features 4 completely independent charging circuits. You can safely charge a 3.6V Li-ion battery and a 1.2V Ni-MH battery in different slots simultaneously.
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
The button top design works in all my devices. The 2A charger is quick enough. I'm ordering another kit for backup.
I power my portable white noise machine with these. The battery lasts several nights. The charger is small enough for my nightstand.
My flashlight has never run better. The 3500mAh is a noticeable upgrade. The charger stops precisely at 4.2V.
You get two high-capacity button tops and a capable charger. I use them in my portable fan during summer. Long lasting and safe.
I replaced old cells in my solar garden lights with these. They hold charge through cloudy days. The charger is straightforward.
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.