2-Pack Vapcell S50 21700 5000mAh 15A CDR Flat Top Battery – High Capacity for Flashlights, Power Banks & Solar
Description
Description
Get more current from your high-capacity cell with the Vapcell S50, a 21700 battery that combines a solid 5000mAh capacity with an enhanced 15A continuous discharge. This 2-pack delivers approximately 43% more energy than a standard 3500mAh 18650, while the 15A CDR provides 50% more current headroom than typical 10A high-capacity cells. Ideal for high-output LED flashlights, fast-charging USB power banks, solar energy storage, and e-bike range extender packs. The flat top design ensures universal compatibility with spring-loaded contacts and simplifies spot-welding for custom battery packs. With excellent cycle life and Vapcell's trusted cell matching, the S50 keeps your devices running longer with the power to handle demanding modes.
Key Features
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5000mAh High Capacity – Provides approximately 43% more energy than a standard 3500mAh 18650 cell. Extended runtime for devices where frequent charging is inconvenient.
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15A Continuous Discharge (CDR) – Delivers 50% more current than typical 10A high-capacity cells. Handles fast-charging power banks, bright flashlight turbo modes, and moderate e-bike loads without overheating.
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Flat Top Design – Universally compatible with all standard 21700 spring-contact chargers, flashlights, and battery trays. The flat terminal is ideal for spot-welding nickel strips in custom battery packs.
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Long Cycle Life – Retains over 80% of initial capacity after 500 charge/discharge cycles under recommended conditions, reducing long-term replacement costs.
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2-Pack Convenience – Build a 10000mAh power bank with two cells in parallel, keep a spare for your flashlight, or start your solar storage project.
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Vapcell Quality Control – Each cell is tested and matched for consistent capacity and low internal resistance, ensuring reliable performance across the pack.
Parameters
| Parameter | Specification |
|---|---|
| Model | Vapcell S50 |
| Cell Core | High-capacity 21700 (5000mAh class, Samsung 50E equivalent) |
| Typical Capacity | 5000 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | ~4900 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge (CDR) | 15 A (cell temperature ≤ 75°C) |
| Max Pulse Discharge | Up to 20–25 A (short burst only, monitor temperature; not for continuous use) |
| Discharge Cut-off Voltage | 2.5 V (do not over-discharge) |
| Standard Charge | CC-CV, 0.5C (2500 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (5000 mA); 0.5C recommended for best longevity |
| Internal Resistance | ≤ 25 mΩ (AC 1 kHz) |
| Cycle Life | ≥ 500 cycles (to 80% capacity, 0.5C charge / 1C discharge) |
| Operating Temperature (Discharge) | -20°C to 60°C |
| Top Type | Flat Top |
| Dimensions | Approx. 21.2 mm diameter × 70.3 mm length |
| Weight (single cell) | Approx. 69 g |
| Package Includes | 2 × Vapcell S50 21700 cells in protective packaging |
Applications
Recommended For
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High-Output 21700 LED Flashlights: The 15A CDR provides ample headroom for turbo modes that would push 10A cells to their limit. Enjoy bright, consistent illumination with the endurance of 5000mAh capacity.
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High-Capacity USB Power Banks: Build a 10000mAh power bank with two cells in parallel. The 15A rating comfortably supports 45W–65W USB-C PD fast charging for laptops and smartphones.
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Solar Energy Storage & Off-Grid Systems: Low-current, long-duration energy storage. The 5000mAh capacity per cell builds substantial energy reserves for solar light banks and small off-grid setups.
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E-Bike Range Extender Packs: In multi-parallel configurations with a proper BMS, the 15A per cell supports 250W–500W motors. The 5000mAh capacity provides solid range.
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DIY Battery Projects & Portable Power Stations: Ideal for custom packs where balanced capacity and enhanced current capability are both needed.
Not Recommended For
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High-Power Vaping / Mechanical Mods (>15A): These require 20–35A continuous. Use Vapcell T42 (35A) or K40 (30A) instead.
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Heavy-Duty Cordless Power Tools: Angle grinders and circular saws demand 20–40A continuous. Use dedicated high-drain cells.
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RC Cars, Drones & High-Drain Models: These require 20–30A+ continuous current.
FAQ
Q: How does the S50 compare to other 5000mAh cells like the Samsung 50G?
A: The S50 offers a 15A CDR, which is approximately 50% more current capability than the Samsung 50G (9.8A CDR). If your device draws more than 10A—such as a fast-charging power bank or a high-mode flashlight—the S50 will deliver more stable voltage and run cooler than a 10A-limited cell.
Q: Is this battery suitable for vaping or power tools?
A: No. Vaping devices and power tools require high continuous currents (typically 20–40A). The S50's CDR is 15A. Using it in such devices will cause severe voltage sag, rapid overheating, and potential battery damage. Use Vapcell T42 or K40 for those applications.
Q: Can I build an e-bike battery with these?
A: Yes, but only in a multi-parallel configuration. A single S50 cannot provide enough current for most e-bike motors. Use at least a 3P or 4P configuration so each cell stays within 15A. Always use matched cells, spot-welded nickel strips, and a properly rated BMS.
Q: What devices benefit most from the 15A CDR?
A: Any device that needs more current than a standard 10A high-capacity cell can comfortably provide: high-mode 21700 flashlights, 45W+ USB-C power banks, and multi-cell e-bike packs where higher per-cell current reduces the number of parallel strings needed.
Q: How should I store these cells when not in use?
A: Store at 3.6–3.7V (approximately 40–50% charge) in a cool, dry place. Use non-conductive battery cases to prevent accidental short circuits. Avoid storing fully charged or deeply discharged for extended periods.
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 Vapcell wrapper on the S50 has held up well to many insertions into my flashlights and chargers without damage.
If you need reliable 5000mAh 21700s for everyday devices, these Vapcell S50 cells provide excellent value and consistent quality.
The 15A CDR handles most flashlights and power banks. These cells are perfect for devices that need reliable 5000mAh power.
The Vapcell S50 offers genuine 5000mAh at a competitive price. Excellent performance for the cost.
My YR1035 meter measured IR at 16m¦¸ on both cells. Good performance for a cell focused on high energy density.
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.