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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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Panasonic NCR18650B Battery

4Hr Charging Time | 500 Cycles

As one of the best-known 18650 batteries out there, this Panasonic NCR18650B is definitely a fan-favorite. Packed with power-efficient lithium-ion technology, this cell features a massive 3,400mAh capacity and boasts at least 500 charge cycles. It's 4.87A discharge rate is the perfect match for moderate-to-high drain devices like LED flashlights, allowing you to get peak performance and runtimes out of your electronics. If you're into the DIY scene, the flat-top terminal is ideal for making powerpacks for your home or electric skateboard. Best of all, Panasonic 18650 batteries charge fast, often in as little as 4 hours charging time with a 4.2V cable/adapter.


  • Massive 3,400mAh capacity, extra-long runtimes
  • Rechargeable with at least 500 charge cycles
  • 4.87A discharge rating handles high-drain devices
  • Flat-top terminal is perfect for powerwalls/packs
  • Same type of battery you'll find in your laptop
  • Wide range of operating temperature; any-climate use


  • Length: 65.3mm (2.57")
  • Diameter: 18.5mm (0.73")
  • Weight: 48.5g (1.71oz)


  • Brand: Panasonic
  • Model: NCR18650B
  • Country: Japan
  • Color: Green
  • Watt-Hours (Wh): 12.2
  • Nominal Voltage: 3.6V
  • Protection: Unprotected
  • Terminal Type: Flat Top
  • Max Discharge Current: 4.87A
  • Capacity: 3,400mAh


  • Charge: 0 to +45°C
  • Discharge: -20 to +60°C
  • Storage: -20 to +5-°c
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
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:JP
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650

lithium-ion safety warning
23 Reviews
78% (18)
4% (1)
4% (1)
4% (1)
9% (2)
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 Larry H.
San Clemente, California
Panasonic NCR 18650 3400mAh Lithium Battery
January 11, 2020
Perfect for my Vape Battery Holder. Great quality and performance.
Easy to purchase, excellent product support and price.
Highly Recommended.
By Ron S.
Annapolis, MD
Quick and Easy
November 19, 2019
Go to the website and choose your product, no redirections like so many sites. Place your order and sit back. A few days later, open your mail box. Unless you are sitting in the dark for the want of a flashlight battery, easier than finding that one shop in (or near) town that carries other than A, AA, and AAA batteries.Ÿ‘Ÿ‘Ÿ‘
By Tom55st
Kent, WA
one of the best
July 28, 2019
One of the best batteries I have for my flashlight. Very long lasting and super bright.
By Jere L.
Not good at holding a charge
May 3, 2019
I got battery over a year hold that hold a charge longer than the new one of these
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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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