Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top
Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top
Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top
Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top
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Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button TopPanasonic NCR18650B 3350mAh 4.87A Battery - Protected Button TopPanasonic NCR18650B 3350mAh 4.87A Battery - Protected Button TopPanasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

Panasonic

✔ Grade A Protected Cells
✔ Guaranteed Authentic
✔ Built-In Safety Protection Circuit
✔ Reliable, High-Performance Output
✔ Fast Shipping from Houston, TX

Price:
$11.99
Stock:
In stock

Pickup available at Houston Warehouse

Usually ready in 2 hours

Key Features

  • 3350mAh nominal capacity for extended runtime
  • PCB-protected design for enhanced operational safety
  • Button top terminal for devices requiring raised contacts
  • Heat Resistance Layer (HRL) improves thermal stability
  • Designed for long cycle life and charge retention

Note: This is a button top protected 18650 battery which is longer than a standard flat top unprotected 18650 battery.

Note: Do not remove the clear protective wrap — doing so voids the warranty and may compromise the cell's protection circuit.

Overview

The Panasonic NCR18650B is a high-capacity, PCB-protected lithium-ion battery designed for applications that prioritize runtime and safety. With a nominal capacity of 3350mAh and controlled discharge output, this cell delivers dependable energy while benefiting from Panasonic’s advanced internal safety technologies.

Applications / Uses

  • High-performance flashlights
  • Portable power banks
  • Rechargeable electronic devices
  • Battery-powered instruments
  • Low-to-moderate drain energy systems

SPECIFICATIONS

Manufacturer Panasonic
Model NCR18650B
Size 18650
Positive Terminal Button Top
Nominal Capacity 3350mAh (typical at 25°C)
Continuous Discharge Rating 4.87A (5A PCB limit)
Nominal Voltage 3.6V
Maximum Voltage 4.2V
Discharge Cut-Off Voltage 2.5V
Protected Yes (PCB)
Rechargeable Yes
Approx. Dimensions 18.90mm × 69.41mm
Approx. Weight 48.1g
Data Specification Sheet Panasonic NCR18650B Datasheet

⚠ Important Safety Warnings

While this battery is equipped with built-in protection circuitry to help prevent overcharging, over-discharging, and short circuits, improper handling or misuse can still result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury or property damage. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.

  • Intended Use: This battery is designed for use in flashlights, headlamps, and similar devices that require a button top configuration. Ensure compatibility with your device before use.
  • Protection Circuit Limitations: While the protection circuit provides additional safety, it cannot prevent damage caused by misuse, including exposure to liquids, extreme heat, or physical damage.
  • Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects (e.g., keys, coins, tools) that can cause a short circuit. Do not store loose batteries in pockets, bags, or other uncontrolled environments.
  • Inspection: Do not use if the battery is dented, leaking, bulging, or if the outer wrapper or button top is damaged.
  • Charging: Use a smart charger specifically designed for button top protected batteries. Do not exceed the battery's voltage and current specifications. Never leave the battery unattended while charging.
  • Prohibited Activities:
    • Do not expose the battery to water, fire, or high heat.
    • Do not modify, puncture, crush, or attempt to disassemble the battery.
    • Do not use the battery if it becomes unusually hot during use or charging.
  • Emergency Response: If a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.

Disclaimer

18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.

Customer Reviews

Overall rating: 4.8 / 5 from 76 reviews.

Customer photo review of Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

While I can't speak to the longevity of the batteries yet as I have not had them long, they do seem to power my UV flashlight quite well. Checking the voltage using a digital voltmeter (immediately after recharging) one battery read 4.28 volts and the other one 4.26 volts and the spec sheet listed the max volts as 4.2 volts so that seems to be pretty accurate.

Gary L. 5/5 Verified

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

Well I'll be! I can't find them! I ordered them for spares and I don't know where I put them! They were supposed to go into my Ring solar lights but my Ring batteries 🔋 are working just fine. Oh well, I guess I ordered them for nothing! Sorry ☹️

Douglas B. 5/5 Verified

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

Really great product with the 18 650 batteries and the accompanying charger that I bought. I would definitely be purchasing items in the future. And I also told the number of my friends about them. Thank you for your great business!

David M. 5/5 Verified

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

I had bought 12 of these Panasonic batteries FOUR years ago for hobby activity, and had ordered cases for these with a power switch. Had placed all these batteries in the six cases. They have never failed me. I use it test my electronic circuits, power my touchless kitchen faucet. It has been reliable experience for all these years. Would definitely recommend them.

Shreeram 5/5 Verified

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

These are excellent batteries made in Japan. I use them for my LED flashlights and my Tecsun PL880 radios. The order process was easy and they were shipped securely and arrived quickly. I am very pleased with the batteries and the excellent service, Thank you.

David F. 5/5 Verified

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

So... theses are by far not the cheapest batteries you can buy.. They are a high end product, and perform as such. I've come to realize that you need to put protected batteries in moderate drain applications, in devices that have no internal cut off protection. Seriously.. How many batteries have you had trashed by giving / lending them out to people who would run a flashlight until it went dim, and then wonder why it wouldn't recharge? With these, no worries about running the voltage low, tons of power.. An excellent investment!!

Chuck S. 5/5 Verified

Panasonic NCR18650B 3350mAh 4.87A Battery - Protected Button Top

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