Samsung 20R (V4) 2000mAh 20A Button Top Battery 6-Pack with XTAR MC4S & MC1 Chargers – Ultimate High-Drain Power Kit for High-Wattage Tactical Lights & Heavy-Duty Tools
Description
What's in This Bundle
- 6x Samsung INR18650-20R4, 2,000mAh (max), Button Top
- 1x XTAR MC4S 4-slot Type-C charger
- 1x XTAR MC1 single-slot Type-C charger
- Cables and manuals included with both chargers
This bundle exists because there's no clean single charger that handles exactly 6 cells at once. Rather than force you into a mismatched combo, we've paired the 4-slot MC4S with the compact single-slot MC1 — together they give you 5 charging slots, so 5 of your 6 cells can charge at the same time, with the last one following right behind. Both chargers use Type-C, so you're not juggling two different cable types either.
A note on "20R4": this is a distinct cell revision, not simply a batch label for the standard INR18650-20R. Based on the lab-test data available for this specific cell, it differs from the standard 20R in a couple of measurable ways — most notably a 20A max continuous discharge rating (versus 22A on the standard 20R) and a tighter internal resistance spec. We've sourced these numbers from supplier lab testing rather than a publicly available Samsung SDI datasheet. If you have a manufacturer spec sheet that differs from what's below, let us know before ordering.
This listing is for Button Top. Looking for Flat Top? Click here to buy: Samsung 20R4 Flat Top + XTAR MC4S 4 + XTAR MC1 Bundle.
Why This Pairing Makes Sense
Like the standard 20R, this is a lower-capacity, high-current cell suited to power tool packs, e-bike builds, and other applications where sustained current draw matters more than runtime per cell. Six cells bought together as a matched set means consistent capacity and internal resistance across the group — this matters more, not less, for a high-drain cell, since mismatched cells in a pack show up faster under heavy load. Button Top is the terminal type required by devices with spring-loaded battery contacts.
The MC4S handles four of the six cells with Type-C convenience and mixed Li-ion/Ni-MH/Ni-Cd charging support, while the MC1 covers the fifth as a small, genuinely portable backup charger you'll likely find other uses for.
Samsung INR18650-20R4 — Battery Specs
| Parameter | Value |
|---|---|
| Brand & Model | Samsung INR18650-20R4 |
| Max Capacity | 2,000mAh |
| Min Capacity | 1,900mAh |
| Rated Voltage | 3.6V |
| Max Charge | 4A / 4.2V |
| Max Discharge | 20A / 2.5V cutoff |
| Internal Resistance | 14mΩ ±3 (lab-tested) |
| Net Weight | ~44g |
| Cell Dimensions | Height 65mm, Diameter 18mm |
| Terminal Type | Button Top |
| Protection Circuit | None (unprotected cell) |
How this compares to the standard Samsung 20R: capacity is essentially the same (2,000mAh), and the max charge current matches (4A). The two measurable differences are discharge rating (20A here versus 22A on the standard 20R) and internal resistance, where this batch's lab-tested figure (14mΩ) runs lower than what's typically measured on standard 20R cells.
This listing is for Button Top. For Flat Top click here
XTAR MC4S — Charger Specs (4 Slots)
| Parameter | Value |
|---|---|
| Input | Type-C, DC 5V⎓2.1A |
| Charging Current | 1A×2 (CH1 & CH4) or 0.5A×4 (all slots occupied) |
| Charging Method | TC-CC-CV 3-stage for Li-ion (trickle → constant current → constant voltage); precise 0ΔV/-ΔV full-charge detection for Ni-MH/Ni-Cd |
| Charge Cut-off Voltage | 4.20V ±0.05V (Li-ion) / 1.5V (Ni-MH/Ni-Cd) |
| Charge Cut-off Current | ≤70mA |
| Operating Temperature | 0°C to 40°C |
| Dimensions | L100mm x W97mm x H26.5mm |
| Net Weight | 95g |
| Compatible Cell Sizes | 3.6V/3.7V Li-ion/IMR/INR/ICR: 10440, 14500, 14650, 16340, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650 (CH1 & CH4 support the full range including 26650; CH2 & CH3 support up to 21700 only). 1.2V Ni-MH/Ni-Cd: AAAA, AAA, AA, A, SC, C |
| Notes | Can fit two 26650 cells (CH1 & CH4) plus two unprotected 21700 cells (CH2 & CH3) at once; cannot charge protected 20700/21700 cells |
| Extra Feature | 0V activation; automatic chemistry detection for mixed Li-ion/Ni-MH/Ni-Cd charging |
| Status Indicators | Red = charging/activating/slot short-circuit; Green = fully charged, no battery inserted, or poor contact; Blinking red+green = reverse polarity |
| Safety | Overcurrent, overvoltage, overheat, and short-circuit protection |
XTAR MC1 — Charger Specs (1 Slot)
| Parameter | Value |
|---|---|
| Input | Type-C, 5V⎓1A |
| Charging Current | 1A (single slot, constant current) |
| Charge Cut-off Voltage | 4.2V ±0.05V |
| Charge Cut-off Current | <130mA |
| Operating Temperature | 0°C to 40°C |
| Dimensions | L103mm x W25mm x H30mm |
| Net Weight | 27g |
| Charging Method | 3-stage charging (trickle → constant current → constant voltage), automatic Li-ion detection |
| Compatible Cell Sizes | 3.6V/3.7V Li-ion: 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650; supports protected 21700 |
| Extra Feature | "0V" activation technology — attempts recovery on over-discharged cells |
| Status Indicator | Green = standby/fully charged, Red = charging, Off = reverse polarity or abnormal insertion |
| Safety | Intelligent detection, auto cut-off, overcurrent/overcharge/overvoltage/short-circuit/reverse-polarity protection, soft-start |
| Package Includes | MC1 charger, USB-C cable, user manual |
A realistic note on charging all 6: the four cells on the MC4S charge at 0.5A per slot with all four bays occupied, while the fifth cell on the MC1 charges at a faster 1A — so that fifth cell will actually finish first, in roughly 2-2.5 hours, while the MC4S batch takes closer to 4.5-5 hours. The 6th cell follows once a slot opens up. It's an asymmetric setup, but a genuinely economical way to cover six cells.
Where This Cell Fits
- Power tool battery packs — cordless drills, saws, and similar tools that draw hard and often
- E-bike and e-scooter packs — commonly used in multi-cell parallel configurations
- DIY packs prioritizing current over runtime, especially builds where consistent internal resistance across cells matters for pack balance
Not the right choice if you want strong runtime from a small number of cells, or if you need the slightly higher 22A ceiling of the standard 20R for a specific application.
Things Worth Knowing Before You Use This Kit
- This is an unprotected cell. Both chargers enforce their own voltage and current cutoffs, but your device still needs to handle discharge-side protection.
- Don't mix these with standard 20R cells or older 20R4 batches in the same pack. Even with similar specs, small differences in internal resistance or capacity between cells can cause imbalanced charging over time.
- Neither charger in this bundle has a display or capacity-testing function. If you want to verify these cells' actual capacity before building a pack, an analyzer-style charger like the VC4SL is worth the extra cost.
- This is a lower-capacity cell by design, whether standard 20R or 20R4 — don't expect 25R or 30Q-level runtime from it.
Frequently Asked Questions
Can all 6 cells charge at the same time? 5 of the 6 can charge simultaneously — 4 on the MC4S, 1 on the MC1. The 6th cell follows once a slot frees up.
Why does the MC1 cell charge faster than the MC4S cells? The MC4S delivers 0.5A per slot when all four bays are occupied, while the MC1 delivers a full 1A to its single cell — so the MC1's cell finishes in roughly half the time. Both rates are safe for this cell; it's simply a difference in charger design.
Does the MC4S also charge AA/AAA batteries? Yes — it automatically detects Ni-MH/Ni-Cd chemistry and applies a dedicated charging strategy alongside its Li-ion profile. The MC1 is Li-ion only.
What's actually different between this and the standard Samsung 20R? Based on the lab data we have for this batch, capacity and max charge current are essentially the same. The measurable differences are a slightly lower max continuous discharge rating (20A vs. 22A) and a tighter, lower internal resistance spec (14mΩ vs. the standard 20R's typical range).
Is this kit protected-cell compatible? The MC1 supports protected 21700 cells; the MC4S does not support protected 20700/21700. The cells included in this bundle are unprotected bare cells, which is standard for this model.
In stock now. This bundle ships as a matched set of six Samsung INR18650-20R4 Button Top cells with a genuine XTAR MC4S and MC1 charger combo — both Type-C, both dependable, ready for power tool and e-bike builds.
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.
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Security
Thicker than V3 wraps. Less prone to tearing during insertion and removal.
No arcing issues with button tops. Solid connection. 20R handles 20A with ease.
Used in a cloud comp. 20R outperforms my VTC5As. Crazy power delivery.
At 120W on a dual battery mod, these 20Rs barely warm up. Impressive.
Didn't know it could act as a power bank. Charged my phone in a pinch.
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.