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NCR18650B 3400mAh 3.7V 18650 Protected Li-ion Battery
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NCR18650B 3400mAh 3.7V 18650 Protected Li-ion Battery

- Apple Green 4 PCS

15.54 $25.86 40% OFF
    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: May 17 - May 19, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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Please NOTE: products will be packed in Using the plastic box.



Type: Battery
Battery: 18650
Battery Type: Lithium-ion
Head Type: Button Top
Rechargeable: Yes
Protected: Yes
Practical Capacity (mAh): 3400mAh
Voltage(V): 3.7V
Built-in Protected Circuit: Yes
Over Voltage Protection: Yes
Over Current Protection: Yes
Short Circuit Protection: Yes
Over-charging Protection: Yes
Over-discharging Protection: Yes

Dimensions and Weight

Product weight: 0.0490 kg
Package weight: 0.2500 kg
Product size (L x W x H): 7.00 x 1.80 x 1.80 cm / 2.76 x 0.71 x 0.71 inches
Package size (L x W x H): 10.00 x 9.00 x 5.00 cm / 3.94 x 3.54 x 1.97 inches

Package Contents

Package Contents: 4 x NCR18650B 18650 Li-ion Battery

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Customer Reviews

4.95 out of 5
  • 1266
  • 67
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See all 1333 reviews Write a Review
  • Yuriy
    Yes (2) Color: Apple Green Size: 4 PCS
    Honest measured capacity of slightly over 3400mAh
    Purchased these advertised Panasonic 18650 cells. Says Made In Japan but zero company name (Panasonic). One thing I am not comfortable is the photo indicates a white protection around the top button, The two received have a thin piece of paper which is hardly attached. Not glued or anything and not made of plastic. With paper peeling up when placing in charger, not good quality control as the metal around button top could easily be exposed! Ran the pair thru my charging station at Charge, Discharge,, Recharge cycle. Reports final voltage and mAh capacity at end of cycle (15hr @ 5000ma). Charged to 4.18 & 4.19 volts, 3,560 & 3,703 mAh. Those are good numbers, however, I would expect real-deal Panasonics to be closer in mAh capacity between the 2 cells. Not a 140mAh diff which could be a 15min diff in tactial light output time. Deducted 1 star for mAh variance and poor quality thin paper around button top, which is peeling up and off top of cell. Every other brand I have seen at least has plastic wrap protection around the button top. Not sure who these were actually mfg by?? I have several Panasonic rechargables, including Eneloops. Every cell has Panasonic clearly written on them. I am getting the impression thee are not the authentic Panasonics after all.

    Mar 11,2018

  • Denver
    Yes (4) Color: Apple Green Size: 1 PC
    Pleasantly surprised!
    Four of the six batteries that I bought look identical to authentic Japanese batteries, and all weigh 1.7oz (on my US Postal scale) or about 50 gm. I just finished testing the two that seemed a little irregular in appearance on my new Foxnovo F2 intelligent charger. The testing with both charging and discharging currents at 0.5A took about 24 hours, and I am VERY PLEASED to report that the measured mAh's for the first two batteries were 3360 and 3385. I recorded about ten points on the discharge curves, and they look very similar to the pattern reported on the internet for Japanese batteries. The first half of the curve wasn't very different from blue 2500mAh Trustfires, but the mid-portion and end of the curve flattened out and kept racking up mAh's. I didn't disassemble a battery so I can only speculate about the guts of the package. I believe that the cells are probably authentic Panasonic sells made in China with an unknown PCB that on the outside looks like a Seiko. My conclusion at this point is that these will function like authentic Japanese cells but at half the price. At $5.79 they would seem to be a bargain, so I'm buying more.
    Doubt that these were made in Japan, and I am very skeptical of any battery that starts off by misleading consumers with its labeling. I was also skeptical about this battery since the price is less than other Panasonic cells on GearBest with lower mAh ratings. Moreover, four single cells are priced lower than a four-pack in violation of usual economy-of-scale practices. Its hard to trust the reported specs after buying various "Fire" brand batteries with wildly inflated mAh ratings. Four of the six that I bought look almost exactly like the authentic Panasonic batteries made in Japan, but two were a bit asymmetric on the PCB end and had buttons that didn't protrude the normal amount (build quality=4 star). These are only cosmetic issues, and both fit in my flashlights just fine. Like authentic Japanese cells, these batteries are larger than spec for 18650 cells, so my ease-of-use rating at 4 stars reflects the fact that they may not fit into some flashlight tubes. It would make all of us fell much better if the label honestly disclosed that the cells are manufactured&

    Aug 13,2015

  • Tim
    Yes (1) Color: Apple Green Size: 4 PCS
    I was almost, ALMOST, going to buy Nite--- batteries from Bat Jun that were 3400mAh 18650's, at 26 bucks a pop, then I started reading CandlePower Forum, and got schooled on batteries. Where do you think Nite---- gets its batteries? Panasonic. That's where. From every place I've checked, and I knew I'd need at least 12 18650's, these Panasonic NCR18650B 3.7V 3400mAh batteries were consistently rated near or at the top. Relabeled by Nite--- (who makes GREAT flashlights btw), these Panasonics, the SAME battery, through GearBest, are under 5 dollars each. GearBest did a great job, and proved my doubts unfounded. I'm going to get other products that I couldn't afford otherwise. To be sure, my bill for the same batteries would have been over 300.00. How about 60?. Yup.
    None. Everything showed up in about 11 days.

    Jun 05,2016

  • Flav
    Yes (1) Color: Apple Green Size: 4 PCS
    Best hobby cells (not for vaping)!!
    Highest available capacity 18650
    Trusted Brand
    Best non bulk price I could find on the internet, so good that it's worth the wait and I went ahead and reordered numerous times.
    Every batch I got was manufactured only a few months before I purchased them, making these about as fresh as they get.
    Use these in all sorts of hobby applications like flashlights, emergency(and power outage) lighting, wireless devices, solar lights, etc.. Just mind the 2C discharge rate, the temperature and SIZE and your imagination is the limit in usage. The reason for the upper case is that these are huge compared to their non protected counterparts. 18.58mm vs 18.28mm(width) and 65.24 vs 70.3mm (length).
    NONE that I could come up with.

    To everyone using these for vaping....if you don't stay under the 2C discharge rating (about 6 Amps) STOP USING THEM THAT WAY. There are far better cells here for about the same price that are far better for that use.

    Oct 04,2016

  • Sergey
    Yes (1) Color: Apple Green Size: 1 PC
    Честные аккумуляторы
    Выбирал наиболее емкие аккумуляторы формата 18650, проверенного производителя. Остановился на NCR18650B 3400 mAh. В настоящее время это максимальная емкость (+- чуть-чуть) для данного формата батарей. Судя по надписи на батарее, сделаны они в Японии. Визуально, по качеству исполнения, придраться не к чему.
    Емкость проверял с помощью зарядного устройства Opus BT - C3100 V2.2
    Сначала разрядил током 1 ампер, слитую емкость и время разрядки можно увидеть на фото
    Потом зарядил током 1 ампер, (залитую емкость и напряжение можно увидеть в отзыве на незащищенные аккумуляторы, здесь не убрались)
    Левые банки защищенные, правые не защищенные.
    Первое фото - слитая емкость, второе - напряжение после разряда, третье - время разряда.
    Для себя минусов не выявил. рекомендую к покупке.

    Слитая емкость получилась больше залитой. Это, скорее всего, особенности работы Opus BT-3100

    Feb 27,2017

FAQ for NCR18650B 3400mAh 3.7V 18650 Protected Li-ion Battery

  • How to choose a LED flashlight?

    LED flashlight is a new type of flashlight with LED (light emitting diode) as its light source. We will introduce you the selection tips of LED flashlights and the advantages of LED flashlights: How to choose a LED flashlight
  • How to dispose of used-up batteries?

    There are three ways to reference in this post.

    How to dispose of lithium batteries?

Customer Questions

  • All(61)
  • Product Information(43)
  • Stock Status(4)
  • Payment
  • About Shipping(13)
  • Others(1)

Hello, why it isn´t possible to choose a shipping method to germany? Thanks!

By Jonathan May-04/2018 10:08:15

Hello Jonathan,                                                                                                                                                                                                               I have checked it for you, because the limit shipping method, this item can't be shipped to your country now. We will improve it as soon as possible.Please kindly choose other available items. Check out our brand new products here: our best deals here:

Hello, can you ship to Slovakia ?

By Peromrd Apr-18/2018 21:06:47

Hello Peromrd, If there is available shipping method or you can choose your country when you make this order, it means we can ship it to your country now.

Hi! Why don't you ship these batteries to Hungary? Do you plan to make it available for Hungarian customres in the near future? Thanks!

By Zsombor Mar-23/2018 10:26:38

Hello Zsombor,I have checked this for you. Due to the limitations with the shipping method, unfortunately this product cannot be shipped to your country at this time. We will aim at improving this as soon as possible.Please kindly check out our other available items here: our best deals here:

Do you ship these batteries to Japan?

By Masao Ohbayashi Oct-29/2017 14:56:44

Hello Masao, Yes, we can ship via express line.

Can you tell me the exact voltage when the low voltage protection kicks in ?

By Adren Aug-10/2017 23:53:45

Hello Adren,It is 2.5V.

How many A does it have for discharge?

By Pavel The Boneless Jul-25/2017 15:23:49

Hello Pavel,The discharge current is 5-6A.Thank you for your inquiry.

Hi, When will it be available again? Thanks

By HaliFeri Jul-01/2017 22:17:41

Hello HaliFeri, We are sorry this item out of stock.

¿¿ Cuando tienen stock??. Gracias

By Francisco Marfil Ramirez May-19/2017 21:29:33

Hello, FranciscoMany thanks for the inquiry.Sorry, the item is out of stock and can not be sold anymore.Please check out our other amazing items here:   Grab our best deals here: Please feel free to contact us if you have additional questions. 

When this item will be available?

By Matt May-03/2017 09:43:57

Hello Matt, I am sorry to inform you the item is out of stock.

Good day, I want to buy you these 4 pcs batteries. I would like to know, you can send me selikonvy Case for these batteries - NBM40 I want to buy it all together ..

By AbuUmar Jan-18/2017 16:43:36

Hello AbuUmar, Package ContentsPackage Contents: 4 x 18650 Battery    There is no case in the package.

61 Questions & Answers View All

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There are two key factors which will affect the time you receive your items.

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7 days to other European countries.
USA Warehouse: Generally, 3-7 days to a USA address.
ES Warehouse: Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note: This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control. Generally speaking, we offer free shipping for NCR18650B 3400mAh 3.7V 18650 Protected Li-ion Battery to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

Payment accepts PayPal,Credit Cards,Wire Transfer,Westem Union, YandexMoney,Webmoney,Boleto,OXXO and BKM as secure payment methods.

The most convenient payment method in the world.
Wire transfer
For orders which exceed $1,500,please contact us at
Note: please email us the order number,the amount transferred along with currency type,and the exact date of the wire transfer.
Western Union
Please contact us at for details.
Note: please email us the following information after you have paid via Westem Union:
· Control Number(10 digits)
· The exact amount sent along with the currency
· Name of sender.
· Address of sender
YandexMoney、 Webmoney
With YandexMoney and Webmoney, it is convenient and safe for you to pay via credit card、wallet or cash
For Brazil customers, we accept Boleto: you only need to fill in the payment information, remember your Boleto Voucher information and pay it within 3 days at any Boleto stores.
For Mexico customers, we accept OXXO: you can choose OXXO payment on our website, and then remember your OXXO Voucher information and pay it within 3 days at any OXXO stores.

Do you want to bulk buy ? Please submit your wholesale inquiry below. Please note we usually don’t offer free shipping on wholesale orders, but the wholesale price will be a big bargain.

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