Dramatic battery drain while asleep?

[wct097]

I've never had a MacBook Pro drain battery like my M1 Max MBP. My old Ivy Bridge Intel MBP can sleep for weeks and not lose much charge, but my M1 Max is nearly always dead if sleeping off charger for a week.

I shut the lid before my connecting flight around 2pm Friday with about 80% battery. Wednesday morning before heading to the office I opened it to see if I needed to bring my charger to find it at 18%. That's like 10% per day just sleeping. That can't be normal, right?

 

[usagora]

You may want to check your power settings to be sure Power Nap isn't enabled for when running on battery power or any other setting that would allow the MBP to be "doing things" while sleeping:

Turn Power Nap on or off on Mac

Choose whether Power Nap is on or off when your Mac is connected to a power adapter or using battery power.

support.apple.com

 

[Fishrrman]

Things are going on "in the background" while it sleeps, using up energy.
You need to find out what they are.

If you're not going to use the laptop from Friday until the following Wednesday, why not just shut it down completely?

 

[creativesmith]

Can you check to see if the system is trying to make WiFi connections during sleep? Perhaps, turn off WiFi before putting the MBP to sleep. See if that makes any difference. Though not a solution, a step toward isolating the cause.

 

[wct097]

I'll chase down power options to see what is set. Thanks for the suggestions.

If you're not going to use the laptop from Friday until the following Wednesday, why not just shut it down completely?

I don't know Friday when I'll be using it again. Could be an hour, could be a week. Ultimately, closing the lid and moving on without pre-planning is a normal methodology that every other laptop I've owned for the past two decades was capable of.

 

[usagora]

Can you check to see if the system is trying to make WiFi connections during sleep? Perhaps, turn off WiFi before putting the MBP to sleep. See if that makes any difference. Though not a solution, a step toward isolating the cause.

And disable Bluetooth as well for good measure.

 

[Samorap]

I've never had a MacBook Pro drain battery like my M1 Max MBP. My old Ivy Bridge Intel MBP can sleep for weeks and not lose much charge, but my M1 Max is nearly always dead if sleeping off charger for a week.

I have the same problem with my M1 MBP. I rarely use it because it's a backup in case my 2012 MBP dies. The M1 is always dead after a week of no use. My other 2008 MBP is at 64% battery capacity after a whole month of no use.

I just plugged the M1 up to the charger. Energy Saver says it will be fully charged in 9 hours!

 

[wct097]

So I can't find "Power Nap" on this machine. The Apple doc for it says I should see it or "options" under the battery preferences but that simply isn't the case. Apparently it isn't a thing for Apple Silicon machines. I did turn off bluetooth.

I have the same problem with my M1 MBP. I rarely use it because it's a backup in case my 2012 MBP dies. The M1 is always dead after a week of no use. My other 2008 MBP is at 64% battery capacity after a whole month of no use.

I just plugged the M1 up to the charger. Energy Saver says it will be fully charged in 9 hours!

Pretty much the same experience. My 2012 has a standby time measured in months with the lid closed. My M1 Max is measured in days. It's a really poor experience for my type of usage. My primary machine is a desktop and both of my MBPs are backups or for when I'm on the road. It isn't unusual for them to not be used for weeks at a time and the M1 will always be dead, or close to it, if not plugged in.