- Definition
- The Baseline Power Profile (BPP) is the original Qi charging profile, in which a receiver is placed on a transmitter by hand and the two coils are aligned by the user rather than by magnets.
This page defines the term. For what it means in practice, see Qi2 explained: what the magnetic profile changes in practice.
What it is
BPP is the profile that made wireless charging mainstream. The user places a device on a flat pad; the transmitter detects the receiver, negotiates a power level, and charges. There is no magnet and no mechanical constraint beyond "put it roughly in the middle".
It carries the lowest power ceiling of the Qi profiles, because the system has to assume the worst case for alignment and keep the thermal budget under control regardless of where the device actually landed.
Why it still matters
BPP is not obsolete. It is what most public charging surfaces, furniture-integrated chargers, and older accessories implement, and it is the profile that any Qi receiver retains for backwards compatibility.
The consequence is a compatibility one: a charger that implements only the magnetic profile will not charge a device that implements only the baseline profile, and vice versa.