The different stages of the TC/CC/CV process are:

• TC phase: cells discharged below 2.9 are 'woken up' by a lower current.
• CC phase: when 2.9V is reached, the cell is charged with a constant current of 0.5-1A.
• CV phase: when the cell is almost charged, the charger switches to charging with decreasing current until the voltage of 4.2V across the cell is reached. When 4.2V is reached, the charging process is complete - the battery is fully charged. 

LCD Display functions:

Current indications:
Operating/Charging status
Charging
Battery voltage
The load used to charge the cells