"Sizzlers" are charged with four or two D battery chargers called the "Juice Machine" and "Goose Pump" respectively. Later, the "Power Pit" was introduced—which was an electric charger that plugged into any household AC outlet and resembled a race track garage or pit stop. A 90-second charge of the tiny internal NiCad battery gives up to five minutes of useful run time. It was claimed by advertisers that the 90-second charge time was "the longest minute and a half in a kid's life" as they waited impatiently for the car to charge sufficiently to get back into the race.