Semco university – All about the Lithium-Ion Batteries


Root causes of battery malfunction and fires

Battery malfunction and fires


Batteries are incredibly useful and versatile sources of energy storage and power, but they can also be dangerous if not used and managed correctly. In recent years, battery malfunction and fires have become increasingly common, prompting many to question the root causes of these issues. After all, batteries have been around for centuries, so why are we seeing an uptick in these events now? In this article, we will explore the various root causes of battery malfunction and fires, as well as ways to mitigate these issues.

Rechargeable Batteries

The vast majority of batteries used in consumer electronics are rechargeable and contain a limited amount of energy. This energy can be released in an uncontrolled manner if the battery is damaged or defective, leading to a fire or explosion. The most common causes of rechargeable battery failure are improper charging, overcharging, over-discharging, and short-circuiting.

Improper Charging

Improper charging of a battery can cause damage and reduce its lifespan. Batteries should only be charged with a charger that is designed for the specific battery type and voltage, as using the wrong charger can cause heat build-up, which can lead to a fire. Additionally, batteries should not be left on the charger for extended periods of time, as this can also cause overheating.


Overcharging a battery can cause it to become dangerously hot and possibly lead to a fire. Many newer batteries come with built-in protection circuits that will shut off the charge when the battery is full, however, older batteries may not have this feature, so it is important to be aware of the charge time and stop charging once the battery is full.

Over discharging

Over-discharging a battery can cause permanent damage and reduce its lifespan. It is important to always check the battery level before use and make sure to recharge it before it reaches a critical level. Additionally, it is important to keep in mind that some batteries, such as lithium-ion batteries, can be over-discharged if they are left unused for too long and can become irreversibly damaged.


Short-circuiting a battery can cause a rapid release of energy, which can potentially lead to a fire. This can be avoided by making sure that all connections are securely fastened and that the battery is not damaged or exposed.

Non-Rechargeable Batteries

Non-rechargeable batteries are not as common in consumer electronics, but they can still be a source of fire or malfunction if not used properly. The most common cause of malfunction with non-rechargeable batteries is incorrect installation. It is important to always check the polarity of the battery before installing it, as incorrect polarity can cause a short circuit and potentially lead to a fire. Additionally, it is important to always use batteries of the correct size and voltage, as using the wrong type of battery can cause a malfunction or fire.


Batteries can be a great source of power and energy storage, but they can also be dangerous if not used and managed properly. The root causes of battery malfunctions and fires can vary, but they are typically due to improper charging, overcharging, over-discharging, short-circuiting, or incorrect installation. It is important to always follow the manufacturer’s instructions when using and charging batteries, as this can help to mitigate the risk of a malfunction or fire.

About Semco – Semco University is an educational website that caters to the needs of students and researchers. Offering information on Lithium-ion batteries. The resources and content are compiled from various sources including manufacturers, test labs, crowdsourcing, etc. Our motto is to provide a viable resource for companies, students, and enthusiasts interested in participating in the Li-ion Battery industry. Our initiative is to make people aware of the benefits, and opportunities of the revolutionary Lithium Batteries for multiple applications.

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