Understanding EV Vampire Drain: How Much Range Is Lost While Parked and How to Minimize It

Electric vehicles steadily consume a small amount of battery power even when sitting idle, a phenomenon commonly known as vampire or phantom drain. Background computer systems, cellular connectivity, and battery temperature regulation typically siphon off one to two percent of charge per day, though severe weather can increase that figure. Owners can curb unnecessary standby energy loss by dialing back constant monitoring features like Tesla's Sentry Mode and moderating mobile app check-ins during long periods of parking.