Press and hold two buttons simultaneously for 3 seconds until the logo lights up.

Press and hold two buttons simultaneously for 3 seconds until the logo LED turns off.

You have 3 options here:

 1) Use AC adapter for fast charging.

 2) Use micro-USB or wireless charger for standard charging. 

 NOTE: Micro-USB charging is faster than wireless charging, recommended USB adapter output power 10W(5V, 2A).

  3) For wireless charger it is recommended to use USB adapter with minimum of 10W (5V, 2A) output power.

There are 2 indicators that will help you understand that your Yecup is charging

1. Near the battery bar in the App you will see lightning icon. 
   
2. When the cooling & heating functions are not used and your Yecup is connected to any charging source, the LED on your Yecup will blink green.
   

There are 2 indicators that will help you understand that your Yecup is fully charged

1. Charging indicator in the App will become full.
   
2. The LED on your Yecup will become steady green while it's turned off.