How much heat the coil continuously produces during operation. This determines whether the accessory needs cooling and affects how long sessions can safely run. Higher thermal load means more energy is wasted as heat instead of becoming magnetic field. Expressed as average power dissipation in milliwatts (mW), calculated from coil resistance and current.
The report estimates how much a coil heats from its own electrical losses and sorts the result into three bands: low below 150 mW, moderate from 150 to 500, and high at 500 and above. This is an electrical estimate, not a measured coil temperature.
