The process of charging the sensor requires a wireless charger, a USB cable, and the sensor. 

How to charge sensor

• Plug the charger cable into the wireless charger micro USB port.
• Plug the other end of the charger into any USB port outlet. 
• Place the sensor in the center of the wireless charger where the logo is located with the logo facing up on the sensor. 

• The completion of the charge should take from about 45 min to an hour. 
• The sensor battery can last for seven days on standby, but battery life differs based on usage. Normal usage can last from six through eight hours.