Summary form only given, as follows. This paper presents a new digital predistorter (DPD) to compensate for nonlinear distortion present in Envelope Tracking (ET) Power Amplifiers (PAs) driven by slew-rate limited versions of the real signal's envelope. Unfortunately, the use of slower versions of the real signal's envelope generates nonlinear memory effects. This paper shows experimental results that prove that is possible to compensate for these nonlinear memory effects.