icon icon

WARNING: This product contains nicotine. Nicotine is an addictive chemical.

Vape Battery Safety

Vape Battery Safety: What You Need to Know

Vape battery safety is something not too often discussed in vaping, but something all vapers, especially those that use box mods and mech mods, should know. Although they are rare, battery explosions can happen, and they mainly attribute to poor handling. That is why proper vape battery safety is so important to know. 

In this blog, we’ll cover why vape batteries are different from regular batteries, how to choose the right vape batteries, and the most crucial battery safety tips to keep in mind. Although this is a brief introduction to this topic, we hope you find it useful. 

Table of Contents

  1. The Difference Between Vape Batteries and Normal Batteries
  2. How To Choose Your Batteries
  3. Battery Safety Tips To Keep in Mind

The Difference Between Vape Batteries and Normal Batteries

External rechargeable vape batteries (not to be confused with integrated vape batteries that can not be taken out) are different than your standard AA batteries. They are called Lithium-ion-polymer batteries or Li-ion batteries for short. They pack serious power and are used across multiple devices. You can find them in your phone, your laptop, and medical tools. 

However, although vape batteries and phone and laptop batteries are both Li-ion batteries, they are different. External rechargeable vape batteries are cylindrical and covered by a wrap, which protects them from external contact. Still, both ends are exposed, and if they came into contact with metal objects, they could short circuit. 

In contrast, the batteries for mobile phones and laptops, although Li-ion batteries are flat and rectangular, are contained inside rigid plastic cases meant to protect them and isolate any explosion that might happen. 

Since vape batteries don’t come in rigid plastic containers, special care must be taken when handling them. 

How To Choose Your Batteries

The first step in battery safety is to choose the right batteries. When deciding to get the suitable batteries, you first have to know which size batteries your box mod takes. Nowadays, vape battery sizes range from 20700 to 18650, and you can find out exactly what size your mod takes by reading your box mod manual. 

When deciding on a battery, you have to consider two specifications every battery has: First, the capacity of your battery or the mAh (Milliamp Hours), and second, the Continuous Discharge Rating, measuring in amperages.

In essence, the bigger the mAh, the longer the battery is going to last. The bigger the amperage, the more power it can discharge. The thing is that you can't have both. You can either get a battery with high mAh but low amps or a battery with higher amps but a lower mAh. 

Generally, you want a battery with high amps for mech mods. However, this is only for people who understand battery safety, ohm's law and the wire types to make coils work with mech mods, not for beginners. They will perform better under stress and the high wattage typically used with mech mods.

For box mods, you'll probably find yourself wanting more battery life or more mAh instead of amps or amperages since most box mods have chipsets that regulate the current and are safer than mech mods.   

It's also essential that you know both these specifications since these are the batteries' ratings when you buy them. Chinese manufacturers and counterfeits will often overstate these ratings to make the batteries seem like they have higher performance. 

However, you'll never find a 18650 battery that has amperages over 30 (or 30A). Simultaneously, if the mAh is over 3000, the amperages won't be over 20 (20A). Keep these two rules in mind because if the batteries you're looking at don't follow them, they are falsely rated and could be faulty.

We recommend you only buy your batteries from reputable sources and only stick to the big four brands, Sony, Samsung, LG, and Panasonic/Sanyo. 

If you want to buy from other brands, we recommend you check out Mooch's blog. Battery Mooch is the vaping battery expert of the vaping world, he runs tests on batteries to find their accurate rating, and he recommends the best batteries to get for your device. You can also check out his Facebook or Youtube channel. 

Battery Safety Tips To Keep in Mind

 Battery Safety Tips To Keep in Mind

Now that you have your batteries let's move on to the safety tips. Here are some things all vape battery owners should do and put to practice if they use external rechargeable batteries. 

Check the Wraps

When you first get your batteries, the first thing you'll want to do is check the wraps. You'll want to look closely at the ends and make sure that the ring insulator is not damaged. If they are torn or broken anywhere, you'll want to toss them out or re-wrap them. Although if you're going to be super safe, we recommend you buy new batteries. 

Use Plastic Cases

Like we explained at the beginning of this blog, the 18650s external rechargeable vape batteries come with both ends exposed. If they were in your pocket without plastic cases, they could quickly explode if they came into contact with keys or coins. So remember always to carry batteries inside plastic cases. And keep them in plastic cases inside your home when not in use. 

Buy A Separate Charger

Don't trust the USB cable that comes with your box mod to charge your external batteries. It would help if you had a separate charger with safety features to charge your 18650s batteries. An external charger will not only be safer, but it will also extend the lives of your batteries. 

Marry Your Batteries

You'll want to marry your batteries and keep them together for everything. Use them for your box mod together, charge them together, and throw them away together. Never use two batteries from different packages, even if they are the same brand. 

Avoid Extreme Temperatures

Avoid putting your batteries under extreme temperatures. Under hot conditions, these could cause your batteries to vent and explode, while under cold conditions, they could impact the battery capacity. Please don't keep them inside the glove compartment of your car, and don't leave them out in the cold. Try to keep them a cool place away from windows. 

Avoid Charging Them Overnight

Never leave the batteries charging unattended overnight, and always keep a close eye on the batteries even if they are charging in a specialized charger with safety features. Like any electronic, failures can occur, so it is best to keep a close eye on your batteries when charging. 

Don’t Overcharge or Over Drain Your Batteries

If possible, never overcharge or over drain your batteries. Most specialized chargers will stop charging batteries once they reach their capacity, but to be safe, whenever you see a full charge of your batteries, unplug them immediately. 

At the same time, don’t over drain your batteries by vaping until the batteries are completely out of power. These things can affect the battery life and its functions, so it is best not to over drain or overcharge your batteries. 

Change Old Batteries

Finally, if you’ve had your batteries for longer than six months or a year, you should change them since they will probably not be working correctly by then. If possible, make sure to recycle them since, as we stated at the beginning of this blog, it is easy for the exposed ends to come into contact with metal objects and short circuits.  


battery safety

Although this is a brief introduction to a topic that we can spend hours on, we hope this serves as a useful beginning guide into battery safety. We hope this guide encourages you to do your research if you plan to learn more about mech mods, ohm’s law, and build your coils.     


DISCLAIMER: EjuiceDB articles and blogs are meant to entertain and educate. However, we are not medical professionals and do not intend to give medical advice through them. Furthermore, Vaping products and nicotine use are only meant for persons over the age of 21.

Children, breastfeeding and pregnant women, persons with risk of heart disease, high blood pressure, diabetes, or that take medications especially for depression or asthma should not use nicotine or vaping products. Always consult a licensed physician prior to use.


Previous article New in The Shop: New Vape Devices for April 2021

Andres Roman

Andres Roman is a content writer with 3+ years of experience, a former 3 pack a week smoker who used vaping to kick the habit, he now wants to educate the world about vaping. You can find him on Linkedin and Twitter.