A business imports Teslas, strips the batteries. A single Tesla battery can be split into 10-12 household rechargeable batteries that can power lights in an apartment for up to 10 hours.
The Ukrainian power system has been damaged to the point where the power is only on for 4 hours a day in some areas.
Unless I’m reading it wrong, that pertains to small LI batteries for household objects, like laptops and wireless screwdrivers, ie. stuff that can plausibly fit into a basin full of water. not sure it would apply to a whole car.
See this site (unfortunately in German, but some pictures) on how it is done with EVs.