Charging is wireless, wired will be better. 1. The suction of the vacuum cleaner charged first will not be strong. The maximum absorption rate of the charged vacuum cleaner is only 15-20W. And the plugged one can reach at least 150W or more, generally about 300W or more, which can reach more than 400W. Therefore, the charged vacuum cleaner can not be used to suck up large garbage, but it is still no problem to suck up dust.
2. In terms of use time, wireless use time seems to be around 15-20 minutes. And that's if the manufacturers are exaggerating a bit. The actual time may be shorter, usually 10-15 minutes. So it is recommended to buy a model with 2 sets of batteries, so that the use time can be doubled.
3. If you use both your home and your car, you'd better buy a high-power, long-standby model.
4. To clean easily, it is best to buy the dust collection method is a bucket.