【SAFER CHARGING & MULTI-PROTECTION】 The back of the wireless phone charger has heat-emission holes in the design to help dissipate temperature while charging. Moreover, it comes with overcharge, over-current and over-voltage protection, temperature control, and foreign object detection. Guards your device's battery against overcharge damage. For better charging experience, please use a QC2.0 or 3.0 adapter (NOT INCLUDED) as the power supply for fast wireless charging.