Vaping Battery Comparison: 18650 vs. 20700 vs. 21700 Batteries


If you are looking for a brand-new vape mod, the first choice you have to make is between devices that come with a built-in battery and those with a removable battery. Shopping for removable battery mods isn’t as easy as it was one time ago. Today, many types of battery cells are available on the market. The diversity can confuse any novice in this market! 18650, the only choice available in the past, has now been joined by 2700 and 21700 today. Hence, the decision to purchase has become a lot more complicated.

It isn’t the decision between internal battery mods and removable battery modes. One has to be very careful when buying a battery; you don’t want to purchase a battery that your device will not support. Now, we understand that there are novices here who have zero clue about the competitive advantages of 18650, 21700 and 2700 batteries. So, if you are someone struggling with the same problem, this brief is just for you!

Cracking the Code of Different Battery Numbers!

Before we go any further, let us discuss the rationale behind using different battery numbers. On the face of it, these numbers help us to identify the different kinds of lithium ion batteries. However, there’s a logic behind using different model numbers, especially in the case of a lithium ion battery.

Here, the first two numbers you see in a battery model refer to the battery’s diameter. The second two numbers are about the length of the battery. Take 21700 batteries as an instance. Here, the battery has a diameter of 21 millimeters, and an overall length of 70 millimeters. So if you think that a bigger number means a bigger battery cell, where you are 100% on the spot!

Comparing 18650, 20700 and 21700 Batteries!

Now, let us switch our attention to the point around which this whole discussion has been orchestrated. Let us compare 18650, 21700 and 20700 batteries. Traditionally, the 18650 battery has been the most popular pick regarding rechargeable devices. The 18650 model has been the number one hit on the charts, from flashlights to notebooks to vape mods to electric cars.

In comparison to that, the 20700 battery is a newer feature. It is much more efficient than the 18650 battery since it offers higher energy density. Did you know that at one point, Tesla was considering 18650 to 20700 batteries in its electric vehicles? These cells were that good! Unfortunately, though, things didn’t go that way for 20700 batteries. Tesla started producing 21700 batteries. Tesla teamed up with Panasonic to produce 21700 batteries, cells that are available everywhere today!

At this point in the discussion, it is pertinent to talk about the benefits that 20700 and 21700 batteries offer compared to the 18650 battery. Vape mods using these two relatively newer batteries offer enhanced energy storage and an increased capacity to operate at higher voltages. Take the example of a single battery bought featuring 18650 cell. It typically operates at a maximum range of 60 to 80 watts.

The battery capacity for the 18650 cells is not more than 3000 mAh. in comparison, single battery mods featuring 21700 cells can operate at 80 to 100 watts and feature battery capacities of around 4000mAh. So, if someone switches from a 18650 mod to a 20700 or 21700 mod, they will likely get a better power range and a superior battery life.

However, it is pertinent to mention that this does not come without a cost. And that cost is a larger and heavier battery. But we must also not forget situations where a vaper uses a web mode with 18650 batteries. Yes, not one battery but two batteries. Hence, switching to a 21700-based vape mod can make life easier since the vapor does not have to use a dual battery mode anymore.

The device is smaller and lighter than the paper used previously. And, of course, the added benefits of higher energy density that come with 21700 cells make up for any disadvantages associated with this con! One last important point that needs to be noted in this discussion is that the device is intended for 21700 or 20700 batteries and comes with an adapter sleeve which makes them 18650 cell-compatible too.

Buying A Vape Battery? Never Ignore These Factors!

Now, if this is your first-time shopping for vape batteries, there are a few factors that you have to be very careful about. Of course, a lot of jargon will make no sense to you at the very beginning. And honestly speaking, you don’t need to know everything when buying a battery. The stuff that matters the most includes a battery’s total capacity and continuous discharge rating (CDR). A battery’s capacity is measured in milliampere-hours. The greater this rating is, the longer the battery will last before a user has to recharge it.

The second factor, i.e., the continuous discharge rating, is specified in amperes. It tells us about the maximum continuous current that a battery can support without heating up or overheating. Again, the higher the CDR number is, the greater the battery’s safety rating. As you might have noted already, mAh and CDR are inversely related to each other!

Final Thoughts

One of the most important things you need to remember when shopping for fair batteries is that the vendor matters a lot. The source from which you buy a vape battery must be someone you can trust and preferably have experience shopping with. Dishonest sellers can sell you older battery cells recovered from laptops and electric cars.

They just rewrap the batteries and pretend as if they’re selling you a brand-new product. And your hard-earned money is not worth those rewrapped cells! So, ensure that the seller you purchase from is someone you can trust with your eyes shut.

With those words of advice, with you, farewell from this space on an optimistic note that you learned plenty of new stuff from this brief!