This obviously depends on many different factors: what type of ball pressurizer you are using, playing style, brand of balls, and so on. However, as a comparison — without a tennis ball pressurizer, 20% of the pressure in the balls will be gone after only about an hour of play, and then steadily decreases from there.
When using a high quality tennis ball pressurizer such as Pressurebox, with high quality tennis balls such as Wilson or Tretorn, the playing experience is close to new balls after a few sessions, and even after 10 sessions the height of the bounce is usually good.
The results will not be the same for everyone, every time. The balls will obviously look a little different after such a long time — the logo will no longer be visible, for instance — but the playing experience will in most cases still be good. For padel the playing time is longer again, because play has even less effect on the felt.
Related reading: how an automatic ball pressurizer works, and our range of padel ball pressurizers.
