Plot holes
Couldn't they have stolen, bought or borrowed some batteries from the neighbors cars? Or stopped by a gas station and bought some car batteries?
Couldn't they have recruited the help of soldiers or police officers from the nearest station?
Moving an unstable nuclear reactor when they could just guarantee the power supply and wait for hours, or even days, to get all the help they needed is just stupid. They could have moved the reactor to a safer place inside the building and