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Can Vapes Explode?
Health Guides
Vape battery incidents make dramatic headlines. The reality behind those headlines is more specific and more preventable than the coverage suggests. Here is what actually causes vape battery failures and what you can do to ensure it never happens to you.
Li-ion
Battery Type in the Vast Majority of Vapes
Misuse
Root Cause of Almost Every Reported Incident
100%
Of Our Stock Is MHRA Compliant and Safety Tested
The short answer
Can a Vape Actually Explode?
Technically yes — but context matters enormously
Incidents happen, but almost always because of misuse or counterfeit products
Vape devices contain lithium-ion batteries, the same battery technology used in smartphones, laptops and power tools. Like any lithium-ion battery, a vape battery can fail catastrophically if it is damaged, overcharged, used with the wrong charger or purchased as a counterfeit. These incidents do occur and they can cause fires and burns. However a MHRA-compliant device from a regulated UK retailer, used according to its instructions with the correct charger, carries a very low risk of battery failure. The incidents that generate headlines are almost always traced to specific misuse.
How the battery works
Understanding Why Lithium-Ion Batteries Can Fail
To understand why vape incidents happen, it helps to understand the basics of how lithium-ion batteries work and what causes them to fail.
Lithium-ion batteries store energy by moving lithium ions between two electrodes through an electrolyte. The process generates heat as a byproduct, which is managed by the battery's internal chemistry and any built-in safety circuitry. When the battery is stressed beyond its design limits, whether through overcharging, physical damage or excessive heat, the electrolyte can decompose and generate flammable gases. If this process accelerates it can lead to thermal runaway: a self-reinforcing cycle of heat generation that can result in fire, rupture or in extreme cases explosion.
Modern lithium-ion batteries in regulated devices have multiple safety features built in to prevent thermal runaway, including overcharge protection circuits, temperature sensors and venting mechanisms. These features are required in MHRA-notified devices. Counterfeit and unregulated products frequently omit or poorly implement these safety features, which is why incidents are disproportionately associated with products bought through unregulated channels.
"Every vape incident we have ever heard about from a customer has had one of three causes: the wrong charger, a damaged battery or a product that was not what it claimed to be."
Touch of Vape team, CoventryThe causes
What Actually Causes Vape Battery Incidents
01
Using the wrong charger
This is the single most common cause of vape battery failure. Using a charger with the wrong voltage or current output can overcharge a battery beyond its safe limit. Always use the charger supplied with the device or one specified by the manufacturer. A cheap generic USB charger that happens to fit the port may deliver the wrong charge profile.
02
Charging damaged batteries
Lithium-ion batteries that have been physically damaged, dropped, bent or pierced should never be charged. Physical damage can compromise the internal cell structure in ways that are not visible externally. A battery that looks intact after being damaged may fail during subsequent charging.
03
Mechanical mod misuse
Mechanical mods are advanced vaping devices with no built-in safety circuitry. They rely entirely on the user's knowledge of battery limits and Ohm's law to operate safely. Mechanical mods used with incorrectly built coils or batteries with insufficient continuous discharge rating can cause catastrophic failure. These devices are not suitable for beginners and should only be used by experienced vapers who understand the technical requirements.
04
Counterfeit and unregulated products
Counterfeit vaping devices, particularly counterfeit versions of popular brands, frequently use substandard batteries and omit the safety circuitry present in genuine products. They may look identical to the authentic product externally while containing entirely different internal components. Buying from regulated UK retailers is the most reliable way to avoid counterfeit products.
05
Leaving devices in extreme heat
Leaving a vape device in a hot car, in direct strong sunlight or near a heat source raises the ambient temperature of the battery beyond its safe operating range. Lithium-ion batteries should not be stored or used in temperatures above approximately 60 degrees Celsius. While summer temperatures in the UK rarely reach this level, a car interior in direct sun can exceed it.
06
Carrying loose batteries in pockets
External batteries, the type used in box mods and some advanced devices, should never be carried loose in a pocket alongside keys, coins or other metal objects. Metal contact with both battery terminals simultaneously creates a short circuit. There have been documented cases of loose 18650 batteries in pockets causing fires and burns. Always carry external batteries in a dedicated case.
Staying safe
Eight Rules for Safe Vaping at Home and on the Go
1
Always use the manufacturer's charger
If you have lost the original charger, buy a replacement from the same manufacturer or a reputable specialist. Do not substitute generic chargers.
2
Never charge overnight or unattended
Charge your device when you are awake and can respond if something goes wrong. This is good practice for all lithium-ion devices, not just vapes.
3
Inspect your device and cable regularly
Check for damaged cables, frayed insulation, swollen batteries or any signs of physical damage. A swollen battery, one that has visibly expanded, should be disposed of safely and never charged.
4
Store devices away from heat and direct sunlight
Keep devices at room temperature. Avoid leaving them in vehicles in warm weather or on windowsills in direct sun.
5
Use a battery case for external cells
If your device uses removable 18650 or similar batteries, always carry spares in a purpose-made insulated battery case, never loose in a pocket or bag.
6
Buy from regulated UK retailers
Products sold by MHRA-registered UK retailers must meet specific safety standards. This does not eliminate all risk but it substantially reduces the likelihood of receiving a device with inadequate safety features.
7
Do not modify your device
Modifications, including using coils below the minimum resistance specified by the manufacturer, using batteries with insufficient ratings or altering the device hardware, can compromise built-in safety features.
8
Dispose of old batteries responsibly
Do not put lithium-ion batteries in household waste. Take them to a battery recycling point. Damaged or swollen batteries should be taken to a specialist recycling facility or your local council hazardous waste service.
Touch of Vape Coventry
Buy Safely From Our Regulated Coventry Store
Every device we stock has passed safety checks and is MHRA compliant. Our team can also advise on safe charging practice for any device you purchase.
To see the full range of compliant devices we carry and find our Coventry location, visit our Vape Shop Coventry page.
From our Health guide
More From Our Health and Safety Guides
This article is part of our Health guide, which addresses the safety and health questions our Coventry customers bring to us most often.
Part of our Health guide
Health Guides
Our Health guide covers the safety, health and practical questions about vaping that our Coventry team answers every day in store.
Find more safety and health guidance in our Health guide, covering everything from battery safety to evidence-based vaping and health research.
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