By clicking through and going to breazy.com you agree that you are at least 21 years old or the legal minimum age to purchase tobacco products in your jurisdiction. When you check out on breazy.com you agree to go through an age verification process that will confirm your age, address, and identity via a public database and our internal specialists. You agree that you will not resell any product(s) you purchase from breazy.com, and you understand that you are strictly prohibited from distributing any alternative nicotine product to any person under the minimum legal age. If you are in the state of California, Hawaii, New York, and Texas, you must confirm you are 21 years old to enter.
Liquid Flavors
Liquid Brands
Breazy Rewards
Member Plans
Please check box to confirm your age.
By checking this box I confirm that I am at least 18 years old or older and of legal age to buy tobacco products in my jurisdiction. CA customers understand that they are responsible for paying the Prop 56 excise tax directly to their state. All orders are age verified through our third party system at checkout, as is required by law.
Please check box to confirm.
By checking this box I confirm that I use these products at my own risk.
Go to Cart
Free Shipping on $50+ USA Orders
Starter Juices Hardware Accessories Brands Deals

E-Cig Batteries: Fixed vs. Replaceable

Samsung 25r 18650 battery

E-Cig Batteries: Fixed vs. Replaceable

Knowledge of batteries and battery safety when vaping is crucial for beginners and experienced vapers alike. While they are often a forgotten component of a high-end device, understanding the different batteries and which batteries to use can be one of the most important safety decisions for vapers.


First, let's differentiate between replaceable-battery mods and fixed-battery mods. Most entry-level mods including eGo types and some intermediate-level devices like the Innokin MVP series have built-in lithium polymer (LiPo) battery packs. A few high-end devices like the eVic VTC mod also use these batteries.

With a fixed battery, the benefits include compact size, ease of use, and the mod manufacturer programs the device so it doesn't fire beyond the battery's safe capabilities. These usually charge via an included USB cable, with either a micro USB or proprietary input to connect to the device.

The drawback, however, is battery life – once your battery dies (anywhere between 100 to 1000 or so charge cycles), your mod is dead. And if your battery reaches the point when it needs a charge, you're out of commission until you can spend some time plugged into a power source.

For this reason, replaceable battery mods are the most commonly selected battery in the high-end mod market. Check out our next article on battery sizes to learn more about what batteries you should be vaping with.