Best 21700 Batteries (2022): Reviews & Comparison

As vaping becomes more popular, the need for better batteries grows. The 21700s are the latest batteries that are quickly becoming the standard for vaping. They offer many benefits over other types of batteries, including longer life and more power. Here we'll take a closer look at what makes these batteries so great and why you should consider using them in your next vape device.

What are 21700 batteries, and why are they so popular for vaping mods?

21700 batteries are a type of lithium-ion battery. They are similar to other types of lithium-ion batteries, such as 18650 batteries, but they are larger in size. 21700 batteries are becoming increasingly popular for vaping mods because they offer a number of advantages over other types of batteries.

For one, they have a higher capacity, which means that they can power a mod for a longer period of time before needing to be recharged. Additionally, 21700 batteries can provide more power than other types of batteries, which is ideal for vapers who want to produce large clouds of vapor. Finally, 21700 batteries are less likely to experience battery sag, which is when the voltage of a battery decreases over time. This can result in reduced performance and shorter battery life.

What is the best 21700 battery?

There are plenty of great 21700 batteries on the market, but finding the best one for you can be tough. We've rounded up our top picks to make your search easier.

Molicel 21700 P42A Battery

The Molicel P42A is a high-performance 21700 battery designed for use in high-drain devices. It has a 4200mAh capacity, ideal for use in mods and other power-hungry devices. The P42A also has exceptional cycle life, meaning it will retain its capacity even after extended use. Additionally, the P42A is designed for low-temperature operation, with a minimum operating temperature of -40°C. This makes it perfect for use in cold weather conditions. Finally, the P42A features high thermal stability and reliability, making it a safe and reliable option for high-drain devices.

Samsung 40T 21700 Battery

The Samsung 40T is a high-quality battery that is well-suited for use in regulated mods. When used in a single or dual-battery mod, the 40T can provide up to 70 watts of power per cell. This makes it an excellent choice for vapers who do not need a lot of power but still want consistent performance. The 40T also has a long-running time, making it ideal for all-day vaping. If you are looking for a reliable and consistent battery, the Samsung 40T is a great option.

Sony Murata VTC6A 21700 Battery

The Sony Murata VTC6A 21700 4100mAh 40A Battery is a great choice for those looking for a dependable and long-lasting battery. This particular model offers excellent performance, with a stable voltage even when under high load. Additionally, the capacity of 4000 mAh ensures that users will be able to enjoy prolonged vaping sessions. Although it may not be as widely available as some other brands, the Sony VTC6A is definitely worth considering for anyone in the market for a new battery.

Hohm Run XL 21700 Battery - Best Overall

The Hohm Run XL 21700 battery is a great choice for anyone looking for a high-performance battery for vaping. This battery offers excellent performance, with a long lifespan and high capacity. Additionally, the Hohm Run XL 21700 Battery is very easy to use, making it a great choice for beginners and experienced vapers alike. Highly recommended!

Does 21700 last longer than 18650?

Battery life depends on a variety of factors, such as the make and model of the battery, the device it's powering, how often the device is used, etc. However, in general, 21700 batteries tend to last longer than 18650 batteries. This is because they have a higher capacity and can therefore deliver more power before needing to be recharged.

How to choose the best 21700 battery?

When it comes to finding the best 21700 battery, there are a few things you'll want to keep in mind. First and foremost, you'll want to make sure that the battery you select is compatible with your device. Secondly, you'll want to consider the capacity of the battery- that is, how much power it can store. And finally, you'll want to think about how long you need the battery to last.

Now, let's take a look at each of these factors in more detail.


When it comes to compatibility, there are two things you'll need to consider: the size of the battery and the type of battery.

As far as size is concerned, 21700 batteries are a bit larger than other types of batteries- so make sure that your device can accommodate this increase in size. As for type, 21700 batteries are Lithium-ion batteries- so again, just double-check that your device is compatible with this type of battery.


The capacity of a battery is measured in milliamp hours, or mAh. This number indicates how much power the battery can store.

Generally speaking, the higher the mAh rating, the better. However, it's also worth noting that some devices are more power-hungry than others- so you'll need to consider that when choosing a battery with the right capacity.


The runtime of a battery is the amount of time it can power your device before it needs to be recharged. This is usually expressed in hours or days.

When it comes to 21700 batteries, you'll find that they tend to have a longer runtime than other types of batteries. This is because they have a higher capacity- so they can store more power.

So, those are the three main things you'll want to keep in mind when choosing the best 21700 battery. Just make sure that the battery you select is compatible with your device, has the right capacity, and has a good runtime.

What are the tips for using 21700 batteries in vaping mods?

21700 batteries are one of the most popular types of batteries used in vaping mods. Many vapers prefer them because they offer a high power output and a long battery life.

Here are some tips for using 21700 batteries in your vaping mod:

1. Make sure that your 21700 battery is fully charged before use.

2. Do not over-discharge your 21700 battery.

3. Do not use damaged or defective 21700 batteries.

4. Store your 21700 batteries in a cool, dry place when not in use.

5. Follow the manufacturer's instructions for charging and using your 21700 battery.

By following these tips, you can ensure that your 21700 battery will last for a long time and provide you with the best possible vaping experience.

Which battery is better, 21700 or 18650?

Deciding which battery is best for vaping can be a tricky process. However, it is important to choose the right battery in order to ensure optimal performance and safety. Two of the most popular choices are 18650 and 21700 batteries. Each type has its own unique benefits and drawbacks.

How each battery performs depends on how they are used. For example, an 18650 battery may perform better in terms of price and quality when used in a regulated device. On the other hand, a 21700 battery may be a better choice for users who require more power and longer life out of their batteries. Ultimately, the best battery for vaping will depends on the specific needs and preferences of the user, so be sure to do your research before making a purchase.


With the technology advancement, 21700 batteries have become one of the most popular types of batteries in the market. There are plenty of 21700 batteries to choose from with different capacities and voltages. When it comes time to choose the best 21700 battery, it is important to consider the different factors mentioned earlier, and the featured 21700 batteries should give you a good starting point in finding the right battery for your needs.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.