If the external battery is a lithium-ion battery, it will burn and explode violently when exposed to water, which is very dangerous. The power should be turned off immediately, the cable should be unplugged, and charging should be stopped.
Once the external battery is touched, the external battery will deform. When you open the case, you can see that the battery inside starts to swell and soon starts smoking. of the power bank fails. After that, smoke may occur if it comes into contact with metal objects.
In fact, there is no theoretical relationship between power bank capacity and explosion rate. However, the larger the capacity, the greater the explosion power. Therefore, the Civil Aviation Administration of China stipulates that. the rated capacity of on-board mobile power banks cannotnot exceed 100 Wh, or 20,000 mAh.