Why a charging station may explode: causes that can lead to overheating and fire
9 March 06:22
For most Ukrainians, portable charging stations have become a necessity, as they power lights, communications, the internet, work devices, and even some household appliances. However, with the widespread use of such devices, there has been an increase in the number of unpleasant incidents involving their ignition or even explosion. In most cases, fires occur due to fairly common scenarios, such as overheating, short circuits, the use of poor-quality components, or improper operating conditions.
Why a charging station can catch fire or explode and what to do to avoid this – read in the article "Komersant Ukrainian".
What can cause a charging station to catch fire and explode: the most common causes
Thermal runaway of the battery or cell imbalance
A charging station is not a single solid battery, but a large number of battery cells that must be balanced and operate within their parameters. If at least one cell degrades or is defective, it can overheat faster than the others, increasing the risk of local overheating and triggering thermal runaway. That is why modern charging station models are equipped with a battery management system, temperature sensors, and protection against overcharging and over-discharging.
Given that most charging stations run on lithium batteries, the main danger to them is thermal runaway. This is a self-accelerating chain of chemical reactions that can be triggered by overcharging, overheating, failure of individual cells, or a short circuit. Under conditions of severe overheating, thermal runaway can turn into an uncontrolled reaction and lead to sparks, smoke, fire, or even an explosion.
Use of counterfeit or uncertified batteries and inverters
A separate risk group includes low-quality or uncertified batteries, inverters, protection boards, as well as uncertified stations that skimp on safety systems or stations that run on small AA batteries. In practice, this can mean weaker temperature control, poorer insulation, incorrect battery management system operation, and, as a result, a higher probability of overheating or short circuits.
Excessive load on the charging station
The most common cause of overheating or ignition of a charging station is its operation at a power close to the maximum allowed. For example, when charging several devices with high power consumption at the same time.
This is especially critical if:
- many devices with high power consumption are connected at the same time;
- the device is located in a confined space where there is insufficient ventilation;
- the cooling system is weak or clogged with dust.
Improper charging using cheap adapters, cables, and “homemade” circuits
When charging a charging station, the risk of overheating increases significantly. In particular, the charging station may catch fire or explode if non-original or cheap adapters and cables that do not hold current or heat up, poor-quality extension cords or splitters are used for charging, as well as if the station is charged from unstable sources or in violation of the manufacturer’s recommendations.
Incorrect operating conditions
Even a serviceable station can overheat if basic operating rules are not followed. To avoid overheating, consider the following:
- keep away from batteries, heaters, heated floors, and direct sunlight;
- place the charging station on a solid and level surface;
- Do not cover the case or block the ventilation openings.
- Leave at least 10-20 cm of free space around the station for air circulation.
Therefore, to reduce the risk of fire, choose certified models purchased only from official retailers and follow the charging and usage instructions for your device. In addition, you should immediately stop using and disconnect the device from the mains if you notice a strong smell, excessive heating, crackling, smoke, swelling, deformation, or discoloration of the charging station case.
Author: Olya Yushko
