10 Best Li-ion Batteries 2021

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10 Best Li-ion Batteries 2021-OCT

Updated on 27th Oct, 2021 based on our actual sales data in 2021 (1st Jan to 26th Oct)

A reliable battery plays an important role in your vaping devices like regulated box mods, unregulated mechanical mods. A good battery will support your excellent vaping experience, including the flavor, vapor production and most importantly – your vape safety. So it is important to pick a right battery!

Previously we have shared the Top 10 Best Box Mods 2021, now it’s time to pick a good battery for your device. Based on our actual sales quantity in 2021, here we list the 10 Best Li-ion Batteries for Vaping 2021 for your reference. This data will be changed every month based on our actual sales quantity.

Brand overview: the 10 Best Li-ion Batteries for Vaping 2021 involved all following mainstream brands: SAMSUNG, LG, Sony, AWT & Efest. Check our 10 Best Li-ion Batteries for Vaping 2021, discount coupon code is available at the end of the post.

Top 10. Sony VTC5 18650 2600mAh

Sony VTC5 18650 2600mAh was ranked in top 7 in our last update, now it dropped to the 10th place.

Sony VTC5 18650 Li-ion Rechargeable Battery is one of the most counterfeited ones. The reason for this is that it has proved to be the greatest in the market when it comes to high performance and extraordinary discharge. 

Manufacturer:   SONY  Murata
Model:     US18650VTC5 (VTC5)
Size:     18650
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:     2600mAh
Discharge Current:   20A Maximum Continuous, 35A Maximum Continuous with an 80deg C cutoff
Nominal Voltage:     3.6V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.5V
Approximate Dimensions:     18.2mm x 65mm
Approximate Weight:    44.1g
Origin:     Singapore or Japan


Top 9. AWT 18650 3500mAh

AWT 18650 3500mAh was ranked in top 9 in our last update, and it keeps the same position in this update.

The AWT IMR 18650 (3500MAH) 35A 3.7V Flat-top battery is 100% authentic and will deliver its powerful capacity of 3500 mAh! The flat-top design is perfect for your devices safety needs. This Aweite battery is a high drain rechargeable battery devised to provide a long life-cycle. Battery is sold separately as an individual unit.

Manufacturer:   AWT
Model:   IMR 18650
Size:     18650
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:   3500mAh
Discharge Current:     10A Maximum Continuous
Nominal Voltage:     3.7V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.5V
Approximate Dimensions:    18.4mm x 65.3mm
Approximate Weight:    47.9g
Origin:   China


Top 8. Samsung INR21700 30T 3000mAh

Samsung INR21700 30T 3000mAh was ranked in top 6 in our last update, now it dropped to the 8th place.

Samsung INR21700 30T 3000mAh 35A Flat Top Li ion Rechargeable Battery is one of the new high capacity 21700 cells. The two cells are very well matches, but they do not like high current. This is a good quality battery and with high capacity.

Manufacturer:   Samsung
Model:     INR21700-30T (30T)
Size:   21700
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:   3000mAh
Discharge Current:   35A Maximum Continuous (1C)
Nominal Voltage:     3.6V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.5V
Approximate Dimensions:     21.1mm x 70.2mm
Approximate Weight:    68.2g
Origin:   Republic of Korea


Top 7. Sony VTC6 18650

Sony VTC6 18650 3000mAh was ranked in top 3 in our last update, now it dropped to the 7th place.

Sony VTC6 18650 Li-ion Rechargeable Battery is a compilation of near laughable riches, when talking about is Phenomenal versatility and attributes. This cell also has “Maximum Balance” in terms of overall performance and the fact that it has High Capacity and has Very High Discharge/Drain capabilities. This is Exceptional being an 18650 form factor size cell, this was previously unheard of just a few years ago. This cell has a True 15 Amp Constant Discharge Rating, but 20Amp Constant Discharge Rating by the manufacture if the cell is kept below 176 degrees Fahrenheit or 80 degree Celsius.

Manufacturer:     SONY Murata
Model:   US18650VTC6 (VTC6)
Size:     18650
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:   3000mAh
Discharge Current:   25A Maximum Continuous, 35A Maximum Continuous with an 80deg C cutoff
Nominal Voltage:     3.6V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.5V
Approximate Dimensions:     18.4mm x 65.8mm
Approximate Weight:    47.55g
Origin:     Singapore or Japan


Top 6. Samsung INR21700 40T 4000mAh

It is the first time that Samsung INR21700 40T 4000mAh appears in this top list.

As one of the top-performing 21700 batteries from Samsung, the 40T (INR21700-40T), having a legitimate 4,000 mAh in capacity with a 35 Amp True Constant Discharge Rating without involving a temperature limit cutoff and not making the cell over worked, is nothing short of Amazing. This is the hardest initial hitting cell made that has a legitimate 4,000 mAh or greater in capacity. With this cell you can have a true “Peace of Mind” that your demanding needs and wants will be more than satisfied and met with no problems. This is a truly a Phenomenal cell in the 21700 form factor size.

Manufacturer:     Samsung SDI
Model:     40T
Size:     21700
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:     4000mAh
Discharge Current:     35A Maximum Continuous
Nominal Voltage:     3.6V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.5V
Approximate Dimensions:     21.1mm x 70.4mm
Approximate Weight:    68.2g
Origin:   Republic of Korea

Top 5. Efest IMR 18650 3000mAh

Efest IMR 18650 3000mAh was ranked in top 8 in our last update, now it climbed to the 5th place.

The Efest IMR 18650 Li-ion Rechargeablebattery has very good performance, 20A is no problem, at 30A it is probably best not to use continious discharge.

Manufacturer:   Efest
Model:   IMR 18650
Size:     18650
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:   3000mAh
Discharge Current:   20A Max Continuous, Rated 35A Max Pulse by Efest
Nominal Voltage:     3.7V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.5V
Approximate Dimensions:    18.23mm x 65.02mm
Approximate Weight:    46g
Origin:   China


Top 4. Samsung 18650 30Q 3000mAh

Samsung 18650 30Q 3000mAh was ranked in top 4 in our last update, and it keeps the same position in this update.

Samsung 18650 30Q Li-ion Rechargeable Battery is an outstanding cell for those who like high capacity without sacrificing a lot of discharge/drain capability. This cell is a competitor of the well-known Sony/MuRata VTC6 cell, in which the Samsung 30Q performs very similar and closely with. Many consumers will argue the better of the two, although that is subjective to each persons own demands and needs for their device. This cell has a high capacity of 3,000 mAh in energy and a true maximum continuous discharge/drain rating of 15 amps without any temperature cut involved.

Manufacturer:   Samsung SDI
Model:   INR18650-30Q (30Q)
Size:   18650
Style:    Flat Top
Protected:    NO, UNPROTECTED
Nominal Capacity:   3000mAh
Discharge Current:   15A Maximum Continuous (1C)
Nominal Voltage:    3.6V
Maximum Voltage:    4.2V
Cutoff Voltage:    2.5V
Approximate Dimensions:   18.33mm x 64.85mm
Approximate Weight:  48g
Origin:   Republic of Korea

Top 3. Sony VTC5A 18650 2600mAh

Sony VTC5A 18650 2600mAh was ranked in top 5 in our last update, now it climbed to the 3rd place.

Sony VTC5A18650 Li-ion Rechargeable Battery is a variant of the original VTC5. It has less capacity than most of the 18650 battery in the market but it definitely has the highest continuous discharge current rated as 30A. It is the best for Vaping device and high drain flashlights.

Manufacturer:     SONY Murata
Model:   US18650VTC5A (VTC5A)
Size:     18650
Style:     Flat Top
Protected:     NO, UNPROTECTED
Nominal Capacity:     2600mAh
Discharge Current:   25A Maximum Continuous, 35A Maximum Continuous with an 80deg C cutoff
Nominal Voltage:     3.6V
Maximum Voltage:     4.2V
Cutoff Voltage:     2.0V
Approximate Dimensions:     18.2mm x 65mm
Approximate Weight:    47.8g
Origin:     Singapore or Japan

Top 2. LG HG2 18650 3000mAh

LG HG2 18650 3000mAh was ranked in top 1 in our last update, now it dropped to the 2nd place.

LG HG2 18650 Li-ion Rechargeable Battery is on a rolling schedule of releases and research, all planned years in advance. An average of between 6% and 10% increase in battery performance is expected, compounding yearly. That means, taking into account the battery specs and LG Chem’s release schedule, the LG HG2 will likely be a good contender for one of the best 18650 batteries for some months to come for high-drain applications.

Manufacturer:   LG
Model:   HG2 18650
Size:   18650
Style:   Flat Top
Protected:   NO, UNPROTECTED
Nominal Capacity:   3000mAh
Discharge Current:   20A Maximum Continuous (1C)
Nominal Voltage:   3.6V
Maximum Voltage:   4.2V
Cutoff Voltage:   2.5V
Approximate Dimensions:   18.75mm x 64.94mm
Approximate Weight:  47g
Origin:   Republic of Korea

Top 1. Samsung INR18650 25R 2500mAh

Samsung INR18650 25R 2500mAh was ranked in top 2 in our last update, now it climbed to the 1st place.

Samsung INR18650 25R 2500mAh 35A Flat Top Li-ion Rechargeable Battery is arguably the most widely sold and respected 18650 form factor size cell on the market, still today. This cell is of very high quality and has a very economical price point to book-end it. This is an excellent balanced cell in terms of performance and reliability. Also this cell has a very good equilibrium with a moderate-high capacity of 2,500 mAh in energy, while having a high maximum continuous discharge/drain rating of 20 amps (Without any temperature cut involved). This cell is very stable, even when it’s pushed to its max rating. This cell has about everything you could desire in a Li-Ion cell

Manufacturer:   Samsung SDI
Model:   INR18650-25R (25R)
Size:   18650
Style:   Button Top
Protected:    NO, UNPROTECTED
Nominal Capacity:    2500mAh
Discharge Current:   20A Maximum Continuous (1C)
Nominal Voltage:    3.6V
Maximum Voltage:    4.2V
Cutoff Voltage:    2.5V
Approximate Dimensions:   18.51mm x 66.79mm
Approximate Weight:  44.7g
Origin:   Republic of Korea

Coupon Code

That’s all our 10 Best Li-ion Batteries for Vaping 2021. The list will be updated every month based on our actual sales quantity. Get 10% OFF for all of our best Li-ion Batteries for Vaping 2021 with coupon code: bestvapes.

Other Best Vapes 2021

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