Battery draining overnight

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Level 1

10 points

Battery draining overnight

Apologies if this problem has already been addressed. I searched the forum and wasn't able to find the discussion.

The battery on my MacBook Pro is draining overnight. The battery is 100% when I close the lid and at 0% in the morning. I unplug all external devices and close all programs at night. I checked the battery level for the last 24 hours and 10 days and the graph is blank. I see green on the chart from when I plugged in my MacBook at 11:30 this morning. I'm not sure if that is because the battery completely drained. The battery health shows normal.

I would appreciate any suggestions.

Thank you,

Ruth

MacBook Pro (15 inch, 2019)

mac OS Monterey 12.5.1

MacBook Pro 15″, macOS 12.5

Posted on Sep 3, 2022 09:23 AM

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Answer 1

Top-ranking reply

Tesserax

Level 10

157,236 points

Sep 3, 2022 09:45 AM in response to ragoodman

Although not common, it may be possible that your notebook's battery is defective.

However, before "giving up" on this battery, let's double-check a few things first:

Start with this support article: Check the condition of your Mac notebook’s battery - Apple Support
In addition, I suggest trying the coconutBattery app, as well: CoconutBattery. Ref: CoconutBattery review: Be informed on the health of your Mac, iPhone, and iPad batteries - Macworld << Think of it as a "second opinion."

Apple does not consider a notebook's battery requires replacement unless it cannot maintain, at least, an 80% charge after 1000 full recharging cycles.

Ref: Get help with your Mac notebook battery - Apple Support

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Answer 2

ragoodman Author

Level 1

10 points

Sep 4, 2022 10:51 AM in response to Tesserax

Thank you for your recommendations. I read through the Apple Support article you recommended. The only change I made to align with the recommendations in the article was to turn off Enable Power Nap while on battery power. Unfortunately there is no usage history for the last 24 hours or last 10 days, possibly because the battery totally drains at night. Battery health still indicates normal. I'll try the coconutBattery app to see if I can get more information on the battery. My mac is plugged in while I'm using it because I use an external monitor. Once it is fully charged, I will disconnect to see if how fast the battery drains. At night, the external monitor and external hard drives are all disconnected.

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Answer 3

allen_31

Level 2

337 points

Sep 6, 2022 12:23 AM in response to ragoodman

There are multiple different reasons that causes the Mac battery draining fast issue. However, to fix the problem, you can try the below fixes:

1. Restart your Mac

2. Install latest macOS updates

3. Check battery usage in System Preferences

4. Reset PRAM/NVRAM and SMC

5. Turn off Power Nap

Hope this will help you resolve the issue!

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Answer 4

ragoodman Author

Level 1

10 points

Sep 6, 2022 08:55 AM in response to allen_31

Thank you both for your recommendations. Turning off power nap seems to have resolved the issue. I still have the question as to why this suddenly happened. Possibly due to the latest software upgrade? It just seems odd all of a sudden my battery started draining at night. I never had this issue before.

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Battery draining overnight

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