To sum up: lipo batteries produced by reputable manufacturers have extremely low risks when used normally, but they are definitely not zero.
Authoritative tests have shown that the thermal runaway time of lipo batteries in the puncture test can exceed 120 seconds, while ordinary liquid lithium batteries can't withstand it for more than 38 seconds. Industry statistics indicate that the fire probability of lipo batteries is approximately 0.0003%, which is 0.3 per ten thousand. In mobile phone explosion accidents, lipo batteries account for only 0.7%. During a 72-hour test at a temperature of 55°C, polymer batteries remained intact, while the bulging rate of liquid batteries reached as high as 87%.
Lipo batteries use aluminum-plastic film soft packaging. Even if there's an internal issue, the gas can escape through the flexible shell, at most causing a bulge or combustion, rather than exploding like metal hard-shell batteries. Therefore, it is called "bloating but not exploding", and the explosion probability is almost zero. However, when there is a severe short circuit, it may still catch fire on its own. This cannot be ignored.
The vast majority of accidents are not caused by the battery itself, but by improper usage. Overcharging, over-discharging, using substandard chargers, exposure to high temperatures, physical punctures or squeezes - these are the main culprits that lead to danger. A survey shows that approximately 83% of liquid battery accidents are caused by improper user operation.
Buy from reputable brands, use the original chargers, don't charge while playing, replace the battery pack immediately if it gets damaged. By following these steps, the safety of the polymer battery will be reassuring enough.
Shenzhen Data Power Technology Ltd. It is a manufacturer with 16 years of experience in lithium-ion manufacturing and research and development. "Get customized product solutions and save 30% on procurement costs."
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