what it mean "Power source is adapter" in macbook pro. Do battery stop providing power when it is charging?

ravindra244 wrote:

i mean, if i use macbook all the time , does it affect battery cycle.

Of course. The more you use your computer on battery power the more often you will need to charge it so the number of cycles will increase more quickly. If you leave the computer plugged in the rate of accumulation of battery cycles will be lower since the batter is not being discharged as quickly or as often.

ravindra244 wrote:

i mean, if i use macbook all the time , does it affect battery cycle.

About Mac notebook batteries

https://support.apple.com/en-us/HT204054

Determine battery cycle count for Mac notebooks

https://support.apple.com/en-us/HT201585

About battery health management in Mac notebooks— 10.15.5

https://support.apple.com/en-us/HT211094

About lithium-ion batteries

https://www.apple.com/batteries/why-lithium-ion/

Yes. With the charger connected the power source is not the battery. Sort of obvious, don't you think?