I received and over-the-air software update pursuant to NHTSA Campaign Number 24V623. This update imposed a demand on the electrical system sufficient to deplete the 12v battery in the vehicle and damage it to the degree that it required replacement. This software update was incomplete, and further updates are still required, so the newly-replaced battery is now at risk. As a result of this software update, the efficiency of the vehicle has been severely compromised. For example, my trip to an from work yesterday totaled 14.3 miles, according to the odometer. That resulted in a drain of 26 miles from the high voltage battery, so the vehicle now consumes approximately 40% more electricity to accomplish the same travel, or , the range has decreased by approx 40%.