Wireless charging coil in clothing

A system, comprising:

• a processor;
• and
• memory storing an application, which, when executed by the processor, performs an operation for charging an electronic device based on user movement, the operation comprising:
• monitoring activity of a user to estimate an amount of power generated by piezoelectric fabric disposed in an article of clothing worn by the user, the piezoelectric fabric being configured to generate electrical energy in response to movement of the user and the generated electrical energy being stored in a power supply device, and the power supply device being configured to provide power to a charging coil disposed in the article of clothing for charging the electronic device;
• selecting a user exercise predicted to generate sufficient power using the piezoelectric fabric to reach a threshold power level, in response to determining the estimated power is insufficient to charge the electronic device to the threshold power level;
• and
• outputting a prompt on the electronic device to advise the user to perform the user exercise.

A computer program product for charging an electronic device based on user movement, the computer program product comprising:

• a computer-readable storage medium having computer-readable program code embodied therewith, the computer-readable program code executable by one or more computer processors to:
• monitor activity of a user to estimate an amount of power generated by piezoelectric fabric disposed in an article of clothing worn by the user, the piezoelectric fabric being configured to generate electrical energy in response to movement of the user and the generated electrical energy being stored in a power supply device, and the power supply device being configured to provide power to a charging coil disposed in the article of clothing for charging the electronic device;
• select a user exercise predicted to generate sufficient power using the piezoelectric fabric to reach a threshold power level, in response to determining the estimated power is insufficient to charge the electronic device to the threshold power level;
• and
• output a prompt on the electronic device to advise the user to perform the user exercise.