Is it bad to leave 2021 MacBook Pro Charging All the Time with Dell U3223QE USB-C?

[stuff99]

Hello everyone,

Hope all is well. I just got a Dell U3223QE with USB-C charging to connect my 2021 MacBook Pro to the display. I notice it always powers my laptop. I was just wondering is it bad that this cable is always actively charging my laptop?

Would this degrade my battery?

Please advise.

Thank you in advance.

​

 

[jav6454]

Yes it will, but if you cycle it according to Apple's guidelines you'll be fine.

 

[izzy0242mr]

Hello everyone,

Hope all is well. I just got a Dell U3223QE with USB-C charging to connect my 2021 MacBook Pro to the display. I notice it always powers my laptop. I was just wondering is it bad that this cable is always actively charging my laptop?

Would this degrade my battery?

Please advise.

Thank you in advance.

​

I use the AlDente app to limit my battery from going above or below 70%, and then occasionally charge it down and back up once in a while.

 

[Fishrrman]

Regardless of the "new software" (both Apple's power management and 3rd party) designed to limit battery charging when plugged in, I -STILL- would not leave a Mac laptop "plugged in all the time".

Perhaps it's the "troglodyte" in me, but I still recommend taking a MacBook "off power" 2 or 3 times a week to "exercise" the battery. And also, to REMOVE external power from it at night when it's either shut down or sleeping...

 

[izzy0242mr]

Regardless of the "new software" (both Apple's power management and 3rd party) designed to limit battery charging when plugged in, I -STILL- would not leave a Mac laptop "plugged in all the time".

Perhaps it's the "troglodyte" in me, but I still recommend taking a MacBook "off power" 2 or 3 times a week to "exercise" the battery. And also, to REMOVE external power from it at night when it's either shut down or sleeping...

I see so much conflicting stuff about this. Wish someone would do a legit study or something, although maybe the tech changes too fast for it to be worth it?

I just remember like a decade ago the rule was "let your battery die completely to properly calibrate it every now and then." Same people back then said "don't keep it plugged in." Now the rule seems to be "don't let your battery die/get too low, that's bad for its health." And lots say "batteries do best around 60-80%."

So I guess my question is: shouldn't batteries do better being at like 70% if you're gonna stay plugged in a lot? Does "exercising" the battery scientifically do good? And for leaving it plugged in overnight, if you use an app like AlDente, it specifically shows the battery isn't being used (powered by adapter) *and* the battery isn't charging. So doesn't that mean there's really nothing happening to the battery at that point?