charging a new MAC PRO IOS Monterey

A feature introduced into Big Sur & Monterey was to preserve the number of Full Battery Cycles - there was an Algorithm coded into the macOS.

It is perfectly Normal for Big Sur , Monterey to Pause / Suspend charging the battery beyond 80% and hold it at that level.

One can nudge / over-ride this by clicking the Battery Icon on Desktop Top Bar and allow charging beyond 80%.

From observations, it will Pause / Suspend again once reading 90%.

Same procedure to over-ride and will charge to 100%

cyndybaran wrote:

It takes more than 12 hours (more like 15) for my new MAC to fully charge. Is that normal? the MAC is brand new.

If you are near the mains leave it plugged in, if you need the portability then run on battery only. THis is how you extend the working life of your battery.

You can expect a 1000 cycle count.

Determine battery cycle count for Mac notebooks - Apple Support

Let the software work for you, you do not have to micro manage the battery charging...

About battery health management in Mac notebooks intel— introduced with macOS10.15.5

About battery health management in Mac notebooks - Apple Support

w/ silicon

About battery health management in Mac notebooks - Apple Support

cyndybaran wrote:

It takes more than 12 hours (more like 15) for my new MAC to fully charge. Is that normal? the MAC is brand new.

If it is mandatory you need 100% you can always from the drop down:

if you do not see the BATT in the menu bar, add it in:

>System Preferences>Battery>Battery

Customize your Mac with System Preferences - Apple Support

Agree with previous posting- it is not required to keep the Battery @ 100% all the time.

Doing some will shorten the life of the battery.

Like any battery - it does need exercis , running on Battery Power at least 1 or 2 times a month to keep it in good shape.

You are welcome.

Do come back to the Apple Support Communities ( ASC )  in the future, if / or when additional questions may arise