Should I keep my macbook pro m3 pro plugged in all the time, even at breaks, when I use it in several sessions a day?

You can leave your computer plugged in when convenient to do so or when necessary. Leaving the computer plugged in will not damage the computer or the battery. Leaving the computer plugged in will reduce the rate of accumulation of battery cycles. There is no need to use a third party app/tool to manage the battery. The MacOS does a good job of managing the computer's charging/power system.

In My case, I use my MacBook Pro M3 almost 10-14 hours a day letting my power adaptor plugged in even after fully charged all the time. But My Macbook's Battery Health down to 99% at 28 cycle within 6 months of purchasing.

Thank you.

My suggestion would be to avoid plugging in once MacBook not in use.

+1 on Bob's excellent advice.

You paid Apple to include built-in battery/power management hardware and software that are quite sophisticated and may work poorly or not all all in the presence of useless third-party utilities.

What Apple provides prevents over-charging and abnormal degradation of the battery's chemistry, and can learn and implement intelligent charging routines based on your use patterns.

Were it my Macbook Pro, and based on my using Macbook Pros since 2008, I would:

• remove the add-on
• give the Mac a couple of days to learn your usage patterns
• not obsess over the battery.

<< and only unplug it when I go to bed. >>

When you go to bed ai the absolute BEST time to plug it in! Your Mac will look at you recent history, notice it is your slack time of the 24 hour day, and slowly and gently, over most of the time you are expected to be asleep, adjust the battery level to perfection.

Your Mac is NOT a $10 toy that will self destruct if left on the power adapter. Charging is under computer control. The power adapter can not 'force itself' on your Mac. Your Mac decides when to change and how.