Panasonic NCR18650B 6.8A 3400mAh Flat Top Battery - Genuine - Wholesale Discount


  • $ 5.33
  • 21

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Authentic Panasonic NCR18650B 3400mAh batteries.  Absolutely the biggest mAh capacity you can get in an 18650.  They can't handle the current that some of the other batteries can but as long as you're not running lots of current these will last a long time.  They're happiest at 1-2A each although they can handle spikes up to about 6A.

Please note that these batteries are not appropriate for most e-cigarette applications.

Full Panasonic NCR18650B Specification

Quick NCR18650B Specs:

  • Max Continuous Discharge Current: 6.8A
  • Typical Capacity: 3400 mAh
  • Nominal Capacity:  3350mAh
  • Style:  Flat top
  • Dimensions: 65.1mm (L) x 18.3mm (D) 
  • Weight: 47g
  • Nominal Voltage: 3.6V
  • Full Charge Voltage: 4.2V
  • Protected/Unprotected:  Unprotected
  • Origin:  Japan


Batteries are sold individually.

If your battery is damaged or defective on arrival (will not take its first charge, or has issues with its first cycle), please let us know within 14 days of receiving your order and we'll make it right. Please read our complete store policy on defective products here for more information and to see if you're eligible.

Manufacturer ratings: Please see more information regarding manufacturer ratings here.

Battery Warning

Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.

All rechargeable batteries have inherent risks under any circumstance. Use caution with working with li-ion batteries (lithium-ion), LiPo (lithium ion polymer), and any rechargeable cells (together "rechargeable batteries"), as they have dangerous charging characteristics and are known to explode or burn if mishandled. A purchaser and user of rechargeable batteries should educate themselves on rechargeable batteries, especially as to charging, discharging, assembly, and storage. Learn more about proper storage and care for rechargeable batteries here. We are not responsible for any damage caused by the misuse or mishandling of rechargeable batteries.

Here are a few tips:

  • Never completely discharge batteries (below 2.5V under load or 3V unloaded)
  • Charge fully (to 4.2V) before first use
  • Never charge batteries to 4.3V or above
  • Do not charge unattended
  • Do not store your li-ion batteries fully charged for an extended period of time (weeks or more)
  • If you must store your battery, only store in a case or individual box in a cool and dry place at approximately 3.6-3.7V
  • Use only high quality battery chargers
  • Do not expose to heat
  • Do not connect the positive contact to the negative contact without an appropriate load
  • Never exceed the battery's specifications
  • Never try to charge or discharge li-ion batteries with battery chargers that are not made for li-ion batteries
  • Always charge these batteries on and within fireproof material
  • Never leave rechargeable batteries in a recharging station unattended
  • Do not use any rechargeable battery or charger if any visible damage is present, or if known mishandling, accidental or otherwise, has occurred
  • Always store and transport rechargeable cells in a safe, non-conductive container (never keep a spare battery loose in a pocket, purse, etc. and always use protective cases)
  • Properly dispose of all battery cells and chargers in accordance with local laws and mandates (if you're unsure, contact your local municipality)
  • If a rechargeable battery overheats, hisses, or bulges, immediately quarantine the battery from any combustible materials - ideally, take the battery outside
  • If a rechargeable battery catches fire, the FAA recommends pouring water or soda on the battery and surrounding areas - ideally, use a foam extinguisher to quell the fire

By purchasing this product, you agree that seller makes no warranties whatsoever with respect to the goods sold on this website, including any (a) warranty of merchantability or (b) warranty of fitness for a particular purpose, whether express or implied by law, course of dealing, course of performance, usage of trade or otherwise. Buyer acknolwledges that it has not relied upon any representation or warranty made by seller, or any other person on the seller's behalf. If purchasing for resale, buyer assumes all responsibility and agrees to forward all notifications and warnings to the purchaser.

Customer Reviews

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  • Questions (1)

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Alexei G.
  • What device/application do you use this with? Replace cheap Chinese 18650 cells in the original e-bike battery which has served less than a year.....

Dream batteries for my nimble e-bike!

These green guys are rated #1 in the world due to their technical characteristics and outstanding performance. You should let Western Canada customers know that on top of your pretty fair & reasonable prices if we take one single cell, they would pay an additional USD$ 1.77. for delivery + import tax/duties , which is still considered to be a great deal. Also, in order to avoid any problems with UPS delivery services, pay import tax indicated in the delivery notice by phone mentioned there by your credit card ASAP that automatically release your package from Canada Custom Authorities and you won’t have to pay ICOD ( International Cash On Delivery) to a UPS truck driver, which for some reason they might not accept and thus return your package back to their UPS facility located 40 km away from your place. I’ve personally realized that UPS which supposed to collect ICOD ( US$20.00 = CAD 26.00. , like in my case with 30 cells, 3.3 lb weight) wants it to be paid and processed before they notify you about delivery date. In my particular case it took UPS Canada Ltd. 12 days to deliver my package to their drop off point requested by myself because ‘they were unable to get access to the building where I reside ‘.

simon l.
United States
  • What device/application do you use this with? Throlling motor


Nice batterie. Consistent quality. Fast shipping. Good comm.

Peter L.
United States
  • What device/application do you use this with? Fatshark Dominators

Quick shipping, great battery.

Quick shipping, great battery.

Greg P.
United States
  • What device/application do you use this with? See previous review.

I Already Submitted A Review

Therefore, I'm not doing it again. Fix the bug that sent out a second email on this.

frank t.
United States
  • What device/application do you use this with? 4v screwdriver

Hope I bought the battery described..had no markings, panasonic or model number

seems to work but really do not think it was as described. performance seemed less than the 1300mah battery it replaced in a power tool.

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