Mi Portable Air Pump 1S Xiaomi is relaunching its Mi Portable Air Pump mini tire inflator in an improved 1S version which notably integrates a USB-C port. The battery-powered electric compressor, which fits into a backpack, still keeps its promises. Equipped with an identical 2000 mAh battery, the Xiaomi mini electric compressor allows you to re-inflate bicycle, scooter, car or motorcycle tires, as well as balls, without a power outlet within reach. Its compactness allows it to be stored in a backpack or under the saddle of certain motorcycles. It will then be of great help in adjusting tire pressure during a journey or dealing with a puncture. Its format is much less restrictive than other models requiring a cigarette lighter socket to operate. Almost identical to the previous version, is it worth falling for this Xiaomi Mi Portable Air Pump 1S, or can we still turn to the remaining stocks of the first model? This is what we verified by testing this inflator in all usage situations.