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Product Description:
The Panasonic Li-ion 26650 A is an industrial-grade 26650 lithium-ion battery custom-sourced directly from the Panasonic factory in Japan. Unlike standard retail cells, this battery features superior consistency, rigorously verified capacity, and extremely low internal resistance. In actual 1A discharge tests down to 2.75V, the measured capacity consistently exceeds 5200mAh, delivering honest, reliable power.
With a stable 5A continuous discharge and an ultra-low internal resistance of just 26-29mΩ, this cell provides highly efficient, long-lasting energy for high-performance flashlights, portable power banks, and outdoor gear. Please note: As clearly printed on the battery wrapper, this product is NOT for e-cigarette . It also does not support high-current charger use.
To suit your specific project needs, we offer 3 top-terminal variants:
Large Button Top (2pcs): Height 67.2mm. Features a larger protruding button, suitable for series connection.
Small Button Top (2pcs): Height 66.6mm. Features a smaller protruding button, suitable for series connection. (Default shipping version.)
Flat Top (2pcs): Height 65.5mm. Standard flat terminal. Not suitable for series connection.
Key Features:
Panasonic Li-ion 26650 A Industrial Cell: Premium-grade Li-ion battery custom-sourced directly from the Panasonic factory in Japan.
5200mAh+ Real Capacity: Rated at 5000mAh, but independently tested to deliver over 5200mAh in real-world conditions.
5A Stable Continuous Discharge: Provides a reliable 5A output for medium-to-high power devices.
Ultra-Low Internal Resistance (26-29mΩ): Ensures minimal heat generation and maximum energy transfer efficiency.
Superior Consistency: High-quality production ensures excellent batch-to-batch consistency and reliable performance.
Industrial Grade Quality: Built to Panasonic's rigorous standards for durability and long-term performance.
Versatile 3 Top Options: Choose from Large Button Top, Small Button Top, or Flat Top to fit your specific device requirements.
Standard 26650 Size: Perfectly fits standard 26650 battery compartments (26mm diameter).
Product Parameters:
Brand: Panasonic
Model: Li-ion 26650 A
Size: 26650
Nominal Capacity: 5000mAh
Actual Capacity: ≥ 5200mAh (Tested at 1A discharge to 2.75V)
Nominal Voltage: 3.7V
Max Continuous Discharge Current: 5A
Internal Resistance: 26-29mΩ
Chemistry: Li-ion (Lithium Ion)
Variant Options: Large Button Top (67.2mm) / Small Button Top (66.6mm) / Flat Top (65.5mm)
Series Connection Support: Yes (Button Top variants) / No (Flat Top)
Dimensions: 26mm (Diameter) x 65.5mm / 66.6mm / 67.2mm (Height)
Pack Quantity: 2pcs
Applications:
High-Performance LED Flashlights: Powers high-lumen tactical flashlights and searchlights with stable, high-capacity energy.
Portable Power Banks: Ideal core cell for building high-capacity, reliable portable power banks.
Outdoor & Camping Gear: Provides long-lasting power for headlamps, camping lanterns, and portable radios.
DIY Battery Pack Assembly: Suitable for assembling medium-power 12V/24V battery packs.
Emergency Backup Power: Reliable power for emergency lighting and backup energy systems.
Frequently Asked Questions (FAQ):
Q1: What is the difference between the three top variants?
A1: * Large Button Top (67.2mm): Has a larger protruding positive terminal, suitable for series connection. * Small Button Top (66.6mm): Has a smaller protruding positive terminal, also suitable for series connection. (Default shipping version.) * Flat Top (65.5mm): Has a flat positive terminal. Not suitable for series connection. Please check your device's battery compartment compatibility before ordering.
Q2: What is the actual capacity of this battery?
A2: While rated at 5000mAh, this industrial-grade cell has been independently tested. When discharged at 1A down to 2.75V, the measured capacity consistently exceeds 5200mAh, providing honest and reliable energy.
Q3: What is the discharge current of this battery?
A3: This Panasonic Li-ion 26650 A supports a stable 5A continuous discharge current, making it suitable for flashlights, power banks, and medium-power devices.
Q5: Can I use this battery with a fast charger?
A5: No. This battery does not support fast charging. Please use a standard Li-ion charger designed for 3.6V/3.7V batteries with a 4.2V cut-off voltage.
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.
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Once you experience the consistency and true capacity of Panasonic industrial cells, there's no going back. These are the gold standard for a reason.
I'm using these in a 4S2P configuration for off-grid solar storage. The 5200mAh real capacity means I have plenty of buffer power for cloudy days.
The Large Button Top is slightly taller than standard. It fits my devices fine, but check your spring clearance if you have a tight fit. Excellent cell otherwise.
I use these to power a portable Class-D amplifier. The 26-29m¦¸ IR ensures clean, noise-free power with zero hum.
Most generic cells give you 4500mAh at best. These Panasonics consistently give me over 5200mAh. The low IR also means they charge faster and discharge more efficiently.
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.
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