Electrically heated aerosol-generating system

A method of controlling an electrically heatable aerosol-generating device comprising a heating element and a rechargeable power supply configured to power the heating element, the method comprising:

• providing power to a heating element from the rechargeable power supply;
• and
• preventing power being supplied to the heating element when a temperature reading is below a pre-determined lower temperature threshold.

A controller for recharging a rechargeable power supply of an electrically heatable aerosol-generating system, wherein the controller is configured to:

• provide a charging current of less than about 0.1 C to the rechargeable power supply when a temperature reading is within a first pre-determined range,
• provide a charging current of greater than about 0.1 C to the rechargeable power supply when the temperature reading is within a second pre-determined range, and
• prevent charging of the rechargeable power supply when the temperature reading is above a pre-determined temperature.