I already had a tire inflator but it was only 12vdc so it only worked when the car engine was running and I was wondering about the drain on my battery, especially now in the pandemic time when I don't drive that much. Since, in my experience, I only inflate tires at home and in the garage, I chose a device that runs on household electricity. Not only does this device work with either power source, but it also has two large buttons to select which source is being used. As with all tireβ¦