4-Pack Vapcell N26 18500 2600mAh 3.7V 5A CDR Flat Top Battery – High Capacity Short Cell for Specialty Flashlights, Headlamps & Electronics
Description
Description
Power your specialty-sized devices with the Vapcell N26, a high-capacity 18500 cell that delivers a full 2600mAh and a steady 5A continuous discharge. This 4-pack is the ideal power solution for short-body flashlights, compact headlamps, portable fans, electric toothbrushes, and medical devices designed for the 18500 form factor. At 50mm long—15mm shorter than an 18650—it fits perfectly in devices where a standard 18650 is too long, yet offers significantly more runtime than smaller 18350 cells. The flat top design ensures reliable contact with spring-loaded terminals. Important: The 18500 is a distinct battery size. Always verify your device explicitly requires an 18500 cell before ordering—it will not fit in 18650 or 18350 compartments. With Vapcell's trusted quality and excellent cycle life, the N26 keeps your hard-to-fit devices running longer between charges.
Key Features
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2600mAh High Capacity – Among the highest capacities available in the 18500 form factor. Provides approximately 30–70% more runtime than typical 1500–2000mAh 18500 cells, and rivals the capacity of many entry-level 18650s.
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5A Continuous Discharge (CDR) – Stable, reliable power for regulated LED flashlights, portable fans, electric toothbrushes, and similar medium-drain devices. Handles medium-high flashlight modes with ease.
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Flat Top Design – Compatible with devices featuring spring-loaded contacts. The flat positive terminal also simplifies spot-welding for custom battery packs.
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18500 Form Factor – The Sweet Spot – Same diameter as an 18650 (18mm) but only 50mm long—15mm shorter than a standard 18650 and 15mm longer than an 18350. Designed exclusively for devices that need more capacity than an 18350 but cannot fit a full-size 18650. Always verify your device's battery compartment length before ordering.
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IMR Chemistry – Offers lower internal resistance and better thermal stability than standard LiCoO₂ cells, making it suitable for moderate high-drain applications.
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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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4-Pack Convenience – Perfect for powering multiple specialty flashlights, keeping spares for your headlamp and fan, or equipping a fleet of compact devices.
Parameters
| Parameter | Specification |
|---|---|
| Model | Vapcell N26 |
| Form Factor | 18500 (18mm diameter × 50mm length) |
| Chemistry | IMR (Lithium Manganese Oxide / Hybrid, standard 3.6V/3.7V) |
| Typical Capacity | 2600 mAh (0.2C discharge to 2.5V) |
| Minimum Capacity | ~2500 mAh |
| Nominal Voltage | 3.6 V (typical operating 3.7 V) |
| Max Continuous Discharge (CDR) | 5 A (cell temperature ≤ 75°C) |
| Max Pulse Discharge | Up to 8 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 (1300 mA) to 4.2 V, cut-off 50 mA |
| Max Charge Current | 1C (2600 mA); 0.5C recommended for best longevity |
| Internal Resistance | ≤ 35 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. 18.3 mm diameter × 50.0 mm length (15mm shorter than 18650) |
| Weight (single cell) | Approx. 38 g |
| Package Includes | 4 × Vapcell N26 18500 flat top cells in protective packaging |
Applications
Recommended For
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Specialty Short-Body Flashlights (18500 Compatible): Certain compact EDC lights are designed specifically for 18500 cells to balance size and runtime. The 2600mAh capacity provides extended illumination in a still-compact form. Must verify your flashlight uses 18500 cells.
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Compact Headlamps: Lighter than 18650-powered models, yet with significantly more capacity than 18350 alternatives. Ideal for extended outdoor activities where weight and runtime both matter.
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Portable Fans & Mini Cooling Devices: Certain compact fans accept 18500 cells. The 2600mAh capacity ensures longer cooling sessions between charges.
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Electric Toothbrushes (Select Models): Some high-end rechargeable toothbrushes use 18500 cells. The N26 provides the longest runtime available in this form factor.
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Portable Medical Devices: Compact diagnostic tools, portable monitors, and infusion pumps that require reliable, long-lasting power in a shorter-than-18650 package.
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DIY Compact Battery Packs: Build custom power solutions where 18650 is too long but 18350 lacks sufficient capacity.
Not Recommended For
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18650 Devices: The 18500 is 15mm shorter (50mm vs. 65mm) and will not make proper contact in devices designed for 18650 cells. Always check your device's battery compartment length.
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18350 Devices: The 18500 is 15mm longer (50mm vs. 35mm) and will not fit in compartments designed for 18350 cells.
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Standard 1.5V AA Devices: This is a 3.7V lithium-ion cell with an 18mm diameter—it is not compatible with AA devices in voltage or size.
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High-Drain Devices (>5A Continuous): For FET-driven turbo flashlights or high-power vaping requiring sustained high current, use a dedicated high-drain 18650 or 21700 cell.
FAQ
Q: What is an 18500 battery? How is it different from an 18650?
A: An 18500 cell has the same diameter as an 18650 (18mm) but is only 50mm long, compared to the 65mm length of an 18650. It is essentially a shorter version, designed for devices with limited battery compartment space. The N26 offers 2600mAh—remarkably close to many 18650 cells—making it the ideal choice when you need solid runtime in a shorter form factor.
Q: Will this battery fit my 18650 flashlight or 18350 device?
A: No. The 18500 is a distinct size. It is too short for 18650 compartments (50mm vs. 65mm) and too long for 18350 compartments (50mm vs. 35mm). It will only fit devices specifically designed for 18500 cells. Always check your device's manual or measure the battery compartment before ordering.
Q: Can I use this battery in my AA-powered device?
A: No. This is an 18mm diameter, 3.7V lithium-ion cell. Standard AA devices are designed for 14mm diameter, 1.5V cells. The voltage and physical dimensions are both incompatible, and using this battery in an AA device will permanently damage the electronics.
Q: How does the N26 compare to the Vapcell M11 (18350) or F14 (18350)?
A: The N26 is an 18500 cell, which is 15mm longer than an 18350. This extra length allows for significantly higher capacity—2600mAh vs. 1100–1400mAh in 18350 cells. If your device can fit the 50mm length, the N26 will provide nearly double the runtime.
Q: Can I charge this battery with any lithium-ion charger?
A: Yes. The N26 uses standard lithium-ion charging (CC-CV to 4.2V). It is compatible with most quality lithium-ion chargers that accept cells up to 50mm in length. Charge at 0.5C (1300mA) for best longevity.
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
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Security
My 18500 EDC light runs on these N26 cells. The 2600mAh provides all-day runtime in a manageable size.
The Vapcell N26 with 2600mAh is the highest genuine capacity 18500 on the market. For maximum runtime, nothing else compares.
My mini fan runs on these N26 cells. The 2600mAh provides hours of cooling on a single charge.
I ran a discharge test at 5A and the temperature stayed under 50¡ãC. The N26 handles its rated current with excellent thermal management.
My camping lantern runs on these N26 cells. The 2600mAh provides extended light for multi-day backpacking trips.
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.