Large battery phones are a safety hazard.

Large-capacity batteries are increasingly sought after in the smartphone era, but officials from the Nanjing inspection and quarantine bureau told reporters yesterday that they had found in the monitoring of cell phone battery testing that mandatory standards were in place. Some large-capacity lithium batteries fail to pass the test on safety items such as thermal impact and heavy impact, and large-capacity mobile phone batteries still have certain safety hazards.

It is understood that in the process of increasing the capacity and small volume of lithium batteries supporting smart phones, the conversion of electrochemical and chemical energy into heat energy is the main reason for the safety hazards of lithium batteries, especially in the test of the "heat impact" project. When the test temperature rises to a certain temperature, it will cause the short-circuit phenomenon of membrane melting and shrinkage, and will produce unexpected energy conversion. Under the test conditions stipulated by the mandatory standard, the larger the capacity of the lithium battery, the higher the chance of internal short-circuit., Security problems are more likely to arise.

Nanjing Inspection and Quarantine Bureau reminds the public, especially consumers of smart phones, to reduce the blind pursuit of large-capacity lithium batteries and try to select mature products of formal brands. At the same time, avoid using smartphones in high-temperature environments and environments that may encounter heavy impact and collisions to avoid accidents.

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