I just bought an external monitor, LG 27UK850, for my Macbook Pro. These are connected using a Thunderbolt cable, and there is automatic charging of the MBP while they're connected. But it's not ideal to have my lithium-ion battery MBP at 100% charge all the time. So...is there a way to stop this automatic charging?
MacBook Pro 13″, macOS 10.13
There is not, and there is no need to stop charging.
But it's not ideal to have my lithium-ion battery MBP at 100% charge all the time.
In macOS 10.15.5, Apple introduced Battery Health Management. One of the things that does is run your Mac on the battery occasionally, even when it's connected to AC power. An example from one of my Macs is below, in the right panel green indicates AC power, blue is the current charge and the highlighted 'blip' is when the Mac ran the battery down to ~93% then charged it back up, all while on AC.
So, your Mac will take care of it's battery, giving it the light, occasional usage it needs to maintain health.
There is not, and there is no need to stop charging.
But it's not ideal to have my lithium-ion battery MBP at 100% charge all the time.
In macOS 10.15.5, Apple introduced Battery Health Management. One of the things that does is run your Mac on the battery occasionally, even when it's connected to AC power. An example from one of my Macs is below, in the right panel green indicates AC power, blue is the current charge and the highlighted 'blip' is when the Mac ran the battery down to ~93% then charged it back up, all while on AC.
So, your Mac will take care of it's battery, giving it the light, occasional usage it needs to maintain health.
The menu bar icon will show charging when it is charging. But it doesn't happen often – Li-based batteries need only occasional use (1-2 times/month) to maintain health. So if you are occasionally running on battery, the Mac will not need to use the battery while on AC.
The advice to run the battery down fairly low is outdated.
Excellent, thanks. Just confirming: What you say is true despite the fact that the menu bar shows a constant "100%" charge?
Also, does the dip ever go below 93% or so? (I've read that it's beneficial to run battery down to 30% or so occasionally...but maybe this isn't so?)
Anyway, thank you for the good advice.
interrupt full battery charge from eternal monitor?
