Which power source(16A or 6A) should i use for my laptop charging having adaper input 2.5A & output 6.7A?

I'm using a Dell adapter:

• Input: 100-240V~2.5A(2,5A) 50-60Hz


• Output: 19.5V(19,5V)==6.7A(6,7A)

I always connect it to 230V 50Hz 16A in my home and 6A in my office.

Is it safe for my laptop? Please comment your views.