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Hello, friends! Thanks to everyone who waited. Sorry for the long delay, but I had a lot to do and my laptop was on the fritz, so no chances for video editing.
I have almost fully recovered from pneumonia, and on November 12, I go back on duty after a long sick leave and vacation.
This story is about the dangers of some modern devices with lithium batteries. Our crew joins the neighboring area fire crew to assist and strengthen their unit, who responded to an emergency call for a fire in an apartment on the 7th floor of a building. When we arrived at the site, there was already an aerial ladder unfolded on the outside. The units of the local Fire Department, who arrived first, conducted reconnaissance through the entrance, trying to enter the apartment through the door. Our crew, after communicating with the Incident Commander tries to get inside from a different direction, through the apartment window, from which the smoke is visible, using the aerial ladder and lifting 60-meters long a high-pressure hose up to the fire. The local crew was successful in getting into the apartment through the door and suppressed the fire which was compact with the backpack fire extinguishers. These hold 20 liters of water and a compressed air cylinder. Although the area of the fire was not big, it created strong black smoke which penetrated throughout the apartment. As it turned out, the fire was caused by a hoverboard while it was charging. There were no adults at home. Fortunately, the child, having put the hoverboard on charge, went for a walk, otherwise, it could have been much worse since the speed and intensity of burning of lithium batteries is very high the child could have easily been overcome by toxic smoke and fumes... The use of thin conductors, poor-quality soldering, and other issues are inherent in low-quality equipment from cheap no-name manufacturers. Devices with a built-in accumulator charging from electrical outlets like smartphones, tablets, power banks, batteries, shouldn't be left unattended. If such devices are over-charged by being left plugged in after they have been fully charged, there is a risk of fire.
In the second part of the video, there is an episode about a short circuit in an electrical panel.