Top 5 Best 21700 Batteries for Vaping in 2021 – Reviews & Top Picks

If you’re looking to have an amazing vaping experience, you need to have good batteries. The 21700 batteries come highly recommended as they are an upgrade from the formerly very popular 18650 and 20700 batteries.

The 21700s are better than the 18650 battery as they have a larger capacity compared to the previous ones and allow for operation at relatively higher wattages, which is a big advantage.

As such, a number of battery manufacturing companies are coming up with 21700 batteries best for vaping and because of that, you might have a hard time deciding on which one to go for. 

Here are my picks for the best 21700 batteries on the market to help you make a decision.

At A Glance: Our Top Picks for Best 21700 Batteries for Vaping

If you’re in a hurry, you can jump straight into our top picks (these are the 21700 batteries best for vaping that most people buy).

  • AmpKing AK4030 Top Pick
  • Samsung 30T Runner-up
  • Samsung 40T Runner-up

Top 5 Best 21700 Batteries for Vaping – Our Reviews:

1. AmpKing AK4030

If you’re looking for high-performing vape batteries that don’t disappoint, then the Ampking AK4030 li-ion battery must be 1st place on your list. It has a 3000 mAh battery capacity, making it very suitable to power vaping mods as well as other different electrical devices.

The battery can be charged with 4A thanks to its Fast Charging Mode, which means the amount of time it will take for you to fully charge it is less by half of what it would normally take to charge other types.

This battery does not fire and you do not have to worry about it exploding either when you choose to charge it using 20V and also 18A. Charging it for seven hours will not even cause an explosion, which you might find very amazing as a customer.

Aside from the fact that it can handle a lot of current for a longer duration, another thing to celebrate about the Ampking AK4030 battery is that not even a 100mW resistance load will cause it to fire or explode. With it, you can always make sure to have a safe vaping experience.

As far as the best 21700 batteries are concerned, AmpKing truly is king.


  • Safe even when charged for seven hours
  • Improved usability because of its fast charging


  • May explode if not properly charged or discharged

2. Samsung 30T

Next on our list of best 21700 batteries is the 30T from Samsung.

The Samsung 30T is a flat head type of battery that comes highly recommended for use in high-wattage or high-drain vape devices. This is because these batteries from Samsung can power as much as 100 watts for each cell.

With it, you can get a vaping experience that is powerful and enjoyable beyond your expectation as a user.

The Samsung 30T comes with a 3000 mAh capacity. It also has a maximum continuous discharge of 35A without the involvement of a temperature cut.

The ingenuity involved in the development the Samsung 30T 21700 battery is responsible for the fact that it only warms up until 67°C at 30A of a continuous drain.

For you to make the most out of this cell from Samsung, use it in an ultra high-drain device of over 20A. The batteries also have no voltage sag unless you push it beyond its limit rating.


  • Offers a great experience due to its high performance
  • High-quality chemical-lithium ion


  • For you to benefit from it, you need to use an ultra-high drain device

3. Samsung 40T

The Samsung 40T is also a very reliable 21700 battery that can power up to 75 watts per cell. With the Samsung 40T 21700 battery, you can get vaping duration of up until a whole day with no compromise on its consistency.

The Samsung 40T 21700 battery maintains maximum balance with extremely high capacity and ultra-high drain ability.

Also, the battery works well with single or dual battery mods that have been regulated, another reason why it’s one of the best 21700 batteries.

You might also want to consider getting the Samsung 40T 21700 battery because of its 4000 mAh capacity with a 35A maximum continuous discharge—that is sure to satisfy your vaping needs and expectations.

If the Samsung 40T isn’t available, a good alternative will be the Run XL 21700 battery from Hohm Tech.


  • Rechargeable up to 250 cycles
  • One of the best 21700 batteries for long vaping sessions


  • Its capacity drops significantly after the 250 charge or discharge cycles

4. Golisi S35

The Golisi S35 also makes it to our list of top 21700 batteries for vaping with its 3700mAh capacity that is an assurance of long battery life. It is a lithium-ion battery that can also use up to 35A with no issues although its maximum discharge current stands at 40A.

The Golisi S35 battery powers up until 90 watts per cell. It works best paired with regulated mods in single battery configurations or dual ones.

When it comes to the make, it has a flat top design and provides safety through its high drain ability. This “best 21700 battery” entry can also power different vape mods producing large clouds, thus providing a vaping experience that is totally worth it. 

The hard-wearing wrap that’s part of its features makes it less susceptible to short circuits.

It is also rechargeable with current applications that are constant of up to 40A. 

This battery can be recharged for over 800 times, meaning you can use it for a long time even to run devices that are high-drain in nature. Whenever you are charging it, it is advisable to use the Golisi charger so that your battery is fully charged within just two hours. 

To ensure that your Golisi S35 21700 battery lasts longer, always store it in a dry place under room temperature.


  • The internal sheets protect the batteries from both overcharging and over-discharging.
  • Has a high energy density
  • Can power different vape mods


  • Not as long-lasting compared to others in the same category

5. Imren Gold

Last on this list of best 21700 batteries is the Imren Gold, but it’s definitely not the least. In fact, you might find the active performance of Imren Gold 21700 battery very impressive as this battery can power 60 watts per cell.

Compared to other best 21700 batteries in this article, it might not be as long-lasting or even powerful but it can be used for both medium or low mods. As such, it is a great option for vaping that does not involve high wattages.

On its wrapper, you will find the maximum continuous recharge. To keep the battery in good working condition, make sure you stick to this figure instead of going for the 40A.


  • Can be charged or discharged fully for up to 250 cycles
  • Can power 60 watts per cell
  • Durable when handled correctly as per the manufacturer’s instructions


  • Limited to medium and low mods

The Bottom Line

There goes our list of the best 21700 batteries on the market. If finding a high-performing and long-lasting 21700 battery for vaping is important to you, then pay close attention to the key features of these 21700 batteries that have been highlighted.

AmpKing came in 1st place, but that doesn’t mean that’s the best 21700 battery for you. It also doesn’t hurt to consider other brands, such as Hohm Tech.

Avoid relying on your personal preferences and considering only factors such as color, among others.

Make sure to think of your vaping needs when shopping for 21700 batteries best suited for vaping. If you enjoy long vaping sessions, for example, then the best batteries for you will be those with high wattages.

You might want to save this list of best 21700 batteries for reference when you set out on getting yourself a battery for vaping. As far as budget, performance, and safety are concerned, you won’t go wrong with any of the best batteries for vaping listed above.