The Best 18650 Batteries Of 2018

by Patrick Hyde •

  • 18650 batteries are rechargeable cells used to power high performance electronics, such as laser pointers and vaporizers
  • The best overall 18650 battery: LG HG2 (20A, 3000mAh)
  • The best high capacity 18650 battery: 3400 mAh Panasonic 18650
  • The best 18650 battery charger: XTAR VC2

The Details

What are the advantages of 18650 batteries? They are 3.7 volt lithium-ion batteries that can be recharged and are compatible with a wide range of electronics, including laptops, digital cameras, flashlights, and even electric car batteries.

Because 18650 batteries all have a uniform and unassuming look, its natural to assume they are all created equal. But don’t let the generic casing fool you, as there are substantial differences in quality from battery to battery.

Panasonic, Sanyo, Sony, Samsung, and LG are the top level 18650 cell manufacturers, making long lasting cells in a standard size (18 mm by 65 mm) that fits all 18650 compatible devices. Chinese knockoffs are available for cheaper, but are prone to shorter lifespans and aren’t always uniform size. As a rule, be wary of “protected” 18650 batteries, which have small circuit boards at the bottom that do not fit some electronics, such as flashlights.

When deciding on which battery is best for you, balance out the capacity, current rating, and voltage. Considering those qualifications, the LG HG2 is the best 18650 battery. It generates 20 amp and 3000 mAh — making it both high-drain and high-capacity.

High-drain batteries are safer and designed for use with high current devices, such as vaporizers. They are also less wasteful, meaning they have a longer life cycle and can last for more recharges. High capacity means that the HG2 can go for longer stretches of time without being recharged, which is useful for just about every situation.

The Best 18650 Battery Charger


The best part about 18650 batteries is that they can be recharged. That means you will need a reliable charger to keep them energized and in working order. I like the XTAR VC2 charger because it has a stylish and informative LCD screen display.

The LCD screen tells you the real mAh capacity of your batteries, so you can make sure they are getting the advertised amount of fill or identify when they are losing efficiency.

Comments 64

  1. Pingback: 6 Things To Consider When Choosing a Torch For Exploration | The Nomadic Family World Travel Blog

  2. Hi,
    Which are the most useful 18650 batteries for flashlight?

    I have some from 1000 lumens to 3000 lumens .

    And what about DIY power banks? What kind of batts?

    Thank you.

  3. At what current, or over what time, and from/to what voltage, are the capacity figures measured? Do all the reputable manufacturers use the same test parameters? Has anyone tested the capacity of a selection of 18650s from different manufacturers?

  4. The NCR18650GA cylindrical cells, with LiNiCoAlO2 chemistry, are manufactured by Panasonic Industrial Corporation. Having a high energy density (specific energy up to 259Wh/kg) it’s the best solution state-of-art to powering the UAVs.

    Battery pack technical specifications.
    Configuration: 6S6P
    Cell count: 36
    Cell type: Li-ion Panasonic NCR18650GA 3.5Ah 10A
    Battery pack capacity: 21Ah
    Voltage (nominal) 22.2V
    Maximum voltage: 25.2V
    Power: 529Wh (calculated on 100% SoC / at maximum voltage)
    Maximum continuous discharge current: 60A (In accordance with cell manufacturer’s specifications)
    Pulse (10sec): > 80A / 1770W – Burst discharge generates overheating of cells and if is not actively cooled may affect the lifespan of these.
    Maximum recommended charge voltage (CV): 24.7V (for lifespan)
    Maximum allowable charge voltage (CV): 25.2V
    Lower-limit voltage (recommended): 18.6V
    Maximum charging current (CC): 10A (for maximum energy storage)
    Weight: +/- 1800g (including wiring harnesses, connectors & covering)
    Physical dimensions: 13,5 x 13 x 5,5 cm
    Discharge connector (custom on order): XT-90 / XT-90S / XT-150 / EC5 / CASTLE 6.5
    Discharge wire type: Flexible silicone insulated copper 12AWG
    Discharge wire length (pack to connector end) +/- 100mm
    Balance plug: JST-XH 7-pin
    Balance wire length (pack to connector end): 40mm.

  5. Is this the best choice for my The Reuleaux RX200 designed by JayBo MOD: LG MJ1 3500mAh 18650 the newest High Drain, High Capacity Li-ion rechargeable battery

    LG INR18650-MJ1 10 Amp continuous 3500mAh rated capacity li-ion rechargeable flat top cell.

    LG INR 18650 MJ1 Specs:

    Capacity (Ah): 3.5 Ah ( 3500mAh )
    Charging Voltage (V): 4.2 V
    Max Charging Current: 2 A
    Nominal Voltage (V): 3.6V-3.7V
    Weight max. (g): 49 g
    Diameter (mm): 18.05 mm (+/- 0.03 mm)
    Height max. (mm): 65.2 mm (+/- 0.03 mm)
    Max. Continuous Discharge rate: 10A ( 10000 mA)
    Top (positive side): Flat top
    Model: INR18650-MJ1
    Made by LG Chem
    Color: Green ?

  6. Your thoughts on replacing 4 cr123 with 2 18650. Manufacture states any replacement must have 3 volts and 1500mAH , does that mean 18650 needs 3 volts and 3000mAH?

  7. What amperage do I need to power a 3W Cree LED torch? Is it safe to try button tops in a device that was supplied with a flat top?


  8. The Ultra Fire 3000mAh work fine in my torch light 28000 lumens.
    I recently brought Ultra Fire 9800mAh: Pure rubbish, it does not even compete with my 3000mAh, and curiouslly weigh 28 grams, almost half of my 3000mAh who weigh 46 grams…..Is someone chitting….no good for dependable and long term business.

  9. Pingback: fr:lithium_battery_review [Wikilink]

  10. The side that i am more keen on is the way that this research was done. Did you just take manufacturer’s word for it or was some actual research done ?

    All that you have written in are the top 5 companies which have production ready cells and which has a brand recall.

    I can on top of my head name another 5 companies which have better products on their list.


  11. Battery capacity is never reliable. Best is still the single use, but costly.
    AAA and AA rechargeable batteries are hard to find in term of power and durability, even within the same brand. 9 volts batteries the worst, better to stay with the single use, moreespecially if it is for a fire detector.
    Now, the 3,7 volts battery is in fashion. This type of battery is easy to find within various capacities. With my led torch, I tested the Ultra fire about 4500mA and GTL 10000mA. No difference, the GTL supposed to last longer die well before the Ultra fire.
    My opinion: I think the arrival of low consumers like leds and other devices, has a direct impact on rechargeable battery manufacturers, that spend more efforts in chitting than immroving battery capacity and reliability.

    1. Your Ultra fire 4500mA and GTL 10000mA are both fake. Anything above 3400mA is fake. Unless it is the new Panasonic 3500mA

  12. @carioca I can’t speak to your question, but I can tell you, there is no manufacturing of Li-ion batteries in Canada.

  13. Their lipstick (mini) uses a single 13650 (3350mAH in latest, 3200mAH in older models). The PowerCore 5k is significantly bigger than the lipstick. You can see the PowerCore+ series uses 13650s (1 cell = 3350, 3 cells = 10050, 4 cells = 13400, etc.), but it looks like many models in the PowerCore series use custom or nonstandard cells.

    3350mAH is possible in a high capacity, low drain 13650. So it is unlikely they are lying.

  14. He meant no 18650 cell has a rating higher than 30 amp, not 3000mah, it was simply a typo on his part

  15. There is no 20A rated cell with a capacity greater than 3000mAh.

    The 3400mAh Panasonic might be rated at 10A or 15A.

  16. Hello everybody, what kind of cell do you think Anker uses in its PowerCore 5000? They claims 5000 mAh in a single cell design, I will open one as soon as I have a chance to do it, but maybe someone here already know it.


      1. They don’t have to be using 18650 batteries. For instance,I have a fairly large capacity power bank (RAV IIRC) that uses a custom Li-Po pack instead of the number of 18650 batteries required for the quoted capacity and is significantly smaller all round than if made from theat number of 18650 batteries. In fact, an unit with identical capacity I have that is made from 18650 batteries is about 2-2.5 cm longer, about 1.5 cm wider and about 0.75 cm thicker as well as being noticeably heavier.

        I also have I have a much smaller capacity (6,000 mAH) power bank using a custom battery pack where the case is also noticeably smaller all round than another unit with identical capacity that uses a couple of 18650 batteries. This unit’s custom Li-Ion pack also allows it to be noticeably smaller and lighter than the ‘standard sized’ (‘standard sized’ in the sense that it uses 18650 cells) unit which is roughly the size one would expect of an unit containing two 81650 batteries and a small PCB and display at one end.

  17. Has someone created a “best” price/performance table?

    I know there is no one singular best battery for all folks (some need Amps, some need low-cost, some need run-time, etc.)

    LG, Samsung, Panasonic are expensive, but are they the “best” for price/performance?

    Are there any quality cells that provide 75% of the performance for 50% of the cost?

  18. Hi Patrick I want to change my battery on my car imiev I have 88 of LEV 50 ah 3.7v. I want to change for the LG HG2. 3.7v 3000 mah I check tha n I can fit 70 of LG 3000mah 3.7v instead the 3.7 LEV 50 am . If I do it give me 210 ah 3.7 v = 777 what X by 88 kit battery give me 68 kw Wow 😳 coz now I just have 16 kw on my car I can just go 100 kilomet whit 68 kw I can do 500 kilometer .but I don’t know the battery if it ok for that but I know Tesla doo whit Panasonic what you think ?
    If it works I need 6200 LG HG2 3000mah you have special price for me ?

    Michel Canada 🇨🇦

  19. I’m looking for the best place to get 18650 high drain batterys for mechanical mods (vape) they just to dear I would like about 20 if at right price and could possibly want more can anyone help me please

  20. I have bought two AEG 18 V drills, one an impact drill the other standard. Each set priced at $A300 came with twin battery packs, one containing 5 cells, the other 10 cells.

    The batteries failed after very little sporadic use. I had one or two replaced by the vendor (Bunnings) but continued using (occasionally) the standard drill until it, too failed recharging in the AEG charger yesterday!

    Hence my interest in such batteries – I just opened one of the 5-cell packs and notice the batteries are labelled 18650, stamped Made in Canada – and at local Australian prices $A14 – $A30+ EACH are not a viable proposition.

    Can I buy reputable Li-Ion cells with solder tag overseas and have them mailed to me in Oz?

    Thanks for any input!


    LMH a.k.a. carioca

    1. Hi,
      I have the EXACT same drill and my battery packs dies as well. 2 cells dead. I replaced all the cells with Samsung INR18650 25R which increased my pack from 1.5Ah to 2.5Ah. Plenty of power and I got the cells delivered from China to Canberra for just $2.40 each. Go to Alibaba 🙂


  21. >Dave May 19, 2016 at 10:33 pm<
    You are correct, you should buy protected cells, especially if it uses multiple 18650s. Using unprotected is carrying around a potential pipe bomb. The unprotected ones are sold for making up battery packs for things like laptops where the battery pack contains the protection. They generally emphasize in the description when they are not protected. In any case, make sure the ones you buy are protected. Protection adds slightly to the length, and the connecting strap adds a whisker to the diameter on one side, but I haven't had any problems with the 18650 flashlights that I use them in. A great place to interact with experts and learn about battery technology is candle power forums.

  22. I’ve heard of 4.2AH being the maximum *in the lab*, the cells made with this technology are so experimental that they are only ever used in drones and other low weight aerospace applications. Also they need special care as charging them at standard (2+ A) rates WILL burn them out due to the thinner than normal plates. I think its a gold/copper (tumbago) nanopatterned alloy to get reduced Cu plating under low charge conditions which is why they are heinously expen$ive ($40+ apiece) but the Cu dendrites that do form are kept under control and can’t short the cell even after 1000+ charges.
    Also the latest consumer cells are 3700mAh but the chances of encountering one are slim to none.

  23. Hi Dear Adam,

    Good day for you! Hope you are well.

    Glad to tell you that I have a special offer for you for Samsung 25R, LG HG2/HE2/HE4 and Sony VTC4/VTC5. Hope you will like it.

    Price as following:

    Samsung INR18650-25R $2.43 (Crazy price!!!) Samsung INR18650-30Q 3000mAh $3.45

    Sony US18650VTC5 2600mAh $3.58 (Crazy price!!!) Sony US18650VTC4 2100mAh $2.98

    LG-HE2 18650 2500mAh $2.58 (Special promotion price!!!) LG-MJ1 18650 3500mAh $3.72

    LG-HE4 18650 2500mAh $2.68 (Special promotion price!!!) LG-HG2 18650 3000mAh $3.63(in stock)

    Panasonic NCR18650B 3400mAh $3.05

    Nitecore I2 $7.05

    Nitecore I4 $9.95

    Nitecore D2 $10.99

    Nitecore D4 $17.49

    Any interested items just feel free to let me know. Hope you can order soon. Thank you!

    1. I am interested in buying some Samsung batteries and test their performance.

      My goal is to build a 50 cell, 51 volt battery for an e bike. I will need high current battery.


    2. i am looking for a 20 pack of 18650 for the flashlights i ordered that came without. shipped to Miami, FL.
      please give em a quote including shipping. thankyou

    3. Hi Jojo,
      I like your batteries and the pricces. But you have nowhere told how to reach you to order the batteries.
      Please mention here.

    4. Hi, I’m interested in your batteries,
      I need to build some batteries for a led lamp, which works 12 hours a day, these are the characteristics of the battery:
      Rating: 3.6V
      2 sizes: 8Ah and 16Ah
      Chemistry: NiMh (Nikel Metal Hydride)
      Connection: Ring terminals
      I could put them together but I need to know how many batteries I need for this specification

  24. The denser the cell the higher the chance of damage when dropped and explosion. Stick with 3000. It’s safer

    1. source for drop explosion claim? im seeing a few whispers about dendrites connecting from the fall but have yet to find an official source for this statement and even the people talking about it in detail tend to note its theoretical

    1. See the comment below by Battery Bro. He says that 3000 mah is the max for 18650 batteries.

    2. You’re seeing the fruits of manufacturing fraud. You can find 18650’s sold as 6000 mAh and even 10000 mAh on eBay.
      When people buy and test them, they never perform as well as claimed, or as well as name brand batteries. Look at the reviews that include images of test charge results.

    3. China is a huge customer manufacturer of many shop that will customer make according to your specification including labeling, such as low capacity cells (li-ion, NiMH and so on) with private label like “hell-fire” or “PanicSonics” that 50000mAh… Many of those private label are Chinese domestic retail, but also US private label. Depending on your price point, buyer beware. For mission critical application, buy braded cells like Samsung and the like.

    4. Those specs dont exist in single cell 18650’s , nor does any CDC (Continuous discharge) rating over 30amps

  25. Excellent in depth article.
    I wish I can see more posts about 18650 batteries and chargers.

    Probably most important thing that I would add is safety related.

    It is easy to see this I would call “Warning message” when you visit: LG, Panasonic, Samsung, and Sony official battery manufacturing web sites.
    Basically what they say “No 18650 battery should be used without electronic protection installed”.

    18650 batteries with protection circuit installed are available, and these li-ion batteries are called Protected 18650 batteries.

    Anybody using unprotected 18650 batteries should know at least basics about lithium-ion safety.

    I would also add one unprotected 18650 battery next to your (very good) LG HG2.
    It is Panasonic NCR18650GA 3500mAh 10 A High Capacity – High Drain

    With new devices such as vape mods writing a few paragraphs about safety (and dangers) when using lithium-ion batteries is very important.

    1. Sal, 3,500mah for a 18650 battery is past the max of 3,000mah. Which leads me to believe it’s some sort of markup to compensate for the overall performance and durability of the battery, let’s not forget safety; because 10amps is a very low number as far as amperage is concerned. Most vapers stay within 20amps on a regulated device if they are following the guidelines of battery safety and ohms law. Specially if they are using a rda or rta, as far as protected 18650 batteries do not believe the hype…

    2. You actually went to the Panasonic,LG Sony websites interesting since they dont manufacture the batteries it is their subsidiary companies that manufacture the cells lol, Sony is SEDC, LG is LG Chem, Panasonic is PEVE, Samsung is Samsung SDI.

    3. Get a SKY-RC model: MC3000 cylindrical Hobby Charger. Its my baby and it tells fakes quickly while maintaining battery health and even calculating ACTUAL cell capacities and can prepare them for long term storage if you have several dozen VTC 4’s , like I do (That I bought when you could get legit cells, some harvested from laptops strangely enough…not Viao’s…..and not made by Sony Singapore’s VTC’s). True Koriyama or Toghichi plant cells. Will pay good $$$ for more Koriyama or Tochigi plant made cells. send pics to rujjiesutton420@gmail.com and we can talk. I can spot a fake a mile away…most times. Some real meticulous counterfeiters need the analyzer…
      But if you sell me cells, I will also analyze any cell you like for free and pay the postage back to you.

      Here are some of my sample charts of analyzed 18650’s for quick reference. One if of four VTC4’s and the other of LG HB6’s (LG-HB6 is a 30Amp Continuous Discharge cell, btw)
      Again, email me: rujjiesutton420@gmail.com (with clear pictures PLEASE!)

      VTC4’s charging(not completely empty) and capacity test(complete discharge and charge at BOTTOM #4


      LGHB6’s -Shows true capacity, and confirms manufactures charge times at 1C and .5C discharge with 30 minute rest periods inbetween cycles for maximum percision.


      Give me a shout!

      “Reggie-The Real ‘Battery Bro’ ” lol…and electrical engineer student!

      I love doing this stuff and I’ll send you batteries to use while yours are being tested. I will not send batteries unless we communicate with tracked postage and tracking numbers. Don’t try and be a crook!

      Look forward to hearing others who are interested in high powered battery cell components and the engineering feild!

  26. I just bought a ThruNite TN32 CW Tactical flashlight. I was under the impression that I should buy a protected battery. Is that not so? What reasonably priced battery and charger is best for this flashlight?

    Thanks for any help.

  27. Thanks for the good article, but I think there are some other important things to mention.

    Top 3 categories:
    We can categorize the best 18650 batteries by things like high-energy (Wh), high-power (A), or high-capacity (mAh).

    Other considerations:
    There are also things like safety standards, your application, environment, and so forth which will dictate which cell is best for you.

    One important factor that people overlook is production availability. Many cells simply are not currently in production so any stock you buy will be old. It’s best to buy whats in production, now.

    If we just take a balanced look at cells, here is what I think are the best cells at the moment (posted March 2016).

    LG Chem HG2
    3000mAh, 20A

    LG Chem HE2 / HE4
    2500mAh, 20A
    *Note, the HE4 is better with handling heat, and also only needs to be discharged to 2.5V to reach its maximum capacity, while the HE2 needs 2.0V.

    Samsung 25R5
    2500mAh, 20A
    *Note, the blue 25R is no longer in production, always buy the green 25R5

    These cells are primarily high-power cells (amperage).

    If you are maximizing for capacity, there are other cells you may consider. I know many people reading this post are e-cigarette / vape users. Actually it is a myth that your battery needs to be “super-amped”. In many situations, especially with dual-battery mods where the amperage is multiplied, you only need 10A cells to product significant “clouds”.

    The other nice thing about high-capacity cells, is that generally they have a longer cycle life. You can also put protective circuitry directly on low-amp cells (less than 6 amps generally).

    So here are the best high-capacity 18650s:

    LG MJ1
    3500 mAh, 10A

    Samsung 35-E
    3500 mAh, 10.5A

    Panasonic B
    3400 mAh, 4.5A

    If you are really interested in high-power cells, with a high maximum continuous discharge rating, then take a look at this cell:

    LG HB41500 mAh, 30A

    There are many “fake” or counterfeit cells with high amp ratings that exceed 30 amps. That is impossible, no 18650 cell on the market has a rating above 3000mAh.

    I hope this helped you find the best cell! All the models I mentioned in this list are currently available and in-production by LG, Panasonic, and Samsung.

    1. Post

      Thanks for sharing this information; your research is immensely helpful in making sense of the crowded and dynamic battery market.

    2. Your inputs are helpful.

      I need guidance on Batteries for small electric vehicles.
      Can you or any forum member help?
      Replace the X’s above with appropriate symbols @ and . to mail me.

      1. How could Tesla get to 90 kWh with only 7104 cells? 3000 mAh for a 3.6V cell is 10.8 Wh. The Tesla battery would therefore be 10.8*7104 = 76.7 kWh. To get to 90 kWh would require 90000/7104/3.6 = 3520 mAh.

        1. Vaughan Pratt, Because an 18650 is 3.7V (nominal) full charge is 4.2V! Redo your math at 4.2V. (12.6×7104=89.5kwh)

        2. Tesla Motors uses a customised 21700 cell made by Panasonic-Sanyo. The rated capacity is higher than 3000mAh.

    3. in the same post you’ve said the Panasonic cells have a capacity of 3400mAh then also said no 18650 cell has a capacity higher than 3000mAh

      what does this mean

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