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Panasonic NCR 18650 3400mAh 3.7V Unprotected High-Drain 4.87A Lithium Ion (Li-ion) Flat Top Battery - Boxed

Panasonic PANASONIC-NCR18650B-3400 alternate view 1
Panasonic PANASONIC-NCR18650B-3400 alternate view 2
Panasonic PANASONIC-NCR18650B-3400 alternate view 3
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  • 3400mAh capacity feels like a never-ending well of power for flashlights, electronics, and other gear
  • Li-ion cells are able to hold a higher capacity than alkaline cells making them a customer favorite
  • Flat top design is ideal for DIY battery pack makers
  • 500 re-charge cycles is good for your wallet and the environment
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Panasonic NCR18650B

Unprotected Flat Top 18650 Battery

The Panasonic NCR18650B is a highly rated 18650 battery with a massive 3,400mAh capacity, capable of being recharged 500+ times for added longterm value. It's substantial 4.87 max continuous discharge rate supports mid-to-high-drain devices, and its unprotected, flat top terminal design makes it a great choice for making battery packs.

Not only can the NCR18650B be recharged hundreds of times, but it also does so in as little as four hours!

Rechargeable & Reusable

Invest in a rechargeable battery that will last for years to come– this battery can be recharged 500+ times.

3 Year Shelf Life

Stock up and store spare batteries with confidence– lithium ion batteries have a 3+ year shelf life, ensuring you always have a fresh replacement when you need it.

Notable Features

» 3,400mAh capacity provides long runtimes for all your devices
» Flat top terminal is perfect for use in making OEM battery packs
Please note that these batteries have flat top terminals, and may not be compatible with some devices.


Unless equipped and 'protected' with a PCB (protection circuit module) and/or similar device, lithium ion (li-ion) rechargeable battery cells are not recommended by BatteryJunction.com or our parent and associated companies, or the respective manufacturers, as a stand-alone product. Misuse of lithium ion rechargeable battery cells can pose a serious risk of personal injury or property damage.
Battery Size:18650
Battery Capacity (mAh):3400
Battery Chemistry:Li-Ion
Battery Voltage:3.7
Battery Terminal Type:Flat Top
Battery Shelf Life:3 Years
Packaging:Contractor Pack
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:1.658oz
Product Dimensions:2.697" (L) x 0.724" (Diameter)
Country of Origin:Japan
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650

lithium-ion safety warning
37 Reviews
84% (31)
3% (1)
3% (1)
3% (1)
8% (3)
By Larry
Greenfield, WI
Hands down Best 18650 Battery I have used in Flashlights and Lasers
November 3, 2018
I was buying 18650 batteries some time ago from other sellers and they never seemed to put out what they claimed. I believe other sellers where selling re-branded Chinese cells. I only purchase batteries from Battery Junction and all there batteries that I have purchased put out or exceded specified mAh. I have a battery analyzer that will discharge then charge battery and after that show mAh. Every battery from Battery Junction is the REAL DEAL. Do not waste your time with other battery sellers for these guys sell 100% authentic cells. These Panasonic NCR 18650 3400mAh seen to last forever and put out lots of current for my most demanding searchlights. Thanks Battery Junction for being an honest seller that watches out for us. Guys buy with confidence from BJ.
By Andrew
Woodgate, NY
Replaced a laptop battery with these.
March 1, 2022
In an effort to save some money and learn a bit more about constructing battery circuits, I purchased these batteries. Worked very well and operated without issue. Definitely worth the price, but depending on your project it may be extremely difficult without performing damage to the battery itself if you were using basic soldering hardware like I did.
By keavn
Great service
August 16, 2021
Real Panasonic 18650 batteries at a great price fast shipping. Thank you.
By Derek
Arcadia, OH
Almost too good to be true
February 18, 2021
These have lasted much longer than I even expected!
By GeorgeS
Elgin il.
February 15, 2021
So far is very good !
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Panasonic NCR 18650 3400mAh 3.7V Unprotected High-Drain 4.87A Lithium Ion (Li-ion) Flat Top Battery - Boxed

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