MBP16 battery drain

[Kuzbad]

I've had my MBP16 for about a week now (i9 / 16gb ram / 8gb video upgrade). All of my libraries (photos, music) are fully synced, so I'm not seeing background activity going on, but I'm seeing very rapid battery drain, even when closed.

MBP was plugged in all last night. I took it to work with me, and used it for about 30-40 minutes doing nothing but Excel, Safari, and terminal. Battery life is down to 76%.

I closed the lid, kept it closed, and opened the computer 3 hours later. The battery is down to 64%. It lost more than 10% reported charge while closed for 3 hours.

I've had one Safari window open using it to upload one file to a website, and that's it, and in ~10 minutes of usage I'm down to 59%.

Is this normal??

(I did have the issue some others have seen where coconutBattery reported a much lower max capacity for the battery at first, but that resolved itself within a day or so. 3 cycles currently.)

EDIT: Forgot to note--I have powernap disabled.

 

[outlawrock]

I have the MBP16, 32GB RAM, 2TB SSD, 8 cores,
AMD Radeon Pro 5500M 4 GB
Intel UHD Graphics 630 1536 MB

Battery is being great for me, in general. 7 or 8 hours if just web surfing, emailing, etc.
Charging with the 96w adapter is not as fast as I was expecting, so might have something going on there.

I started from the installed Catalina and installed apps, copied files, etc. Didn't do a recover from a backup. Past experience is that recover is not clean / can cause problems. So if you did a recover possibly consider wiping, installing by hand, copying by hand.
Or if you have 64GB that might eat a lot more battery... Or you have an app using the non-integrated graphics.

 

[matram]

Just finished an 8-hour workshop with light note taking in MS Word. More than 50% of the battery left at the end of the day.

Time remaining on battery at start of the workshop was 17+ hours and that seemed to be about right.

 

[ascender]

Does activity monitor give you any clues?

My experience on the base model has been like other people - for light use (office, mail, music, web browsing ) I'm getting 10 hours+ easily with the display at about 60%.

I have noticed a wee bit of drain, I do have power nap on and Backblaze runs overnight, but yours doesn't look right.

 

[HalfOnWhole]

Mine is similar. I have power nap turned off for battery. I closed the lid and unplugged it and it lost 95% of battery being closed for about 1.5 days. I did a recovery from day 1 from a 13 inch.

 

[panadoro]

I've had my Base model i7, 16 RAM, 500GB for 7 days. At first I was getting a max of 6-7 hours with light browser use. I used Migration to set up from my previous MacBook. I could not see anything draining the power in Activity Monitor. Called Applecare, tried an SMC reset, a bunch of other things, and the only thing left is a complete wipe and start again from scratch. As it's under warranty, I was thinking of returning it for a new machine. However, today, inexplicably it's improved hugely, it's at 60% since being used for 8 hours. The battery is showing a futher 7 hours left on istat, Coconut and Battery Life 3. Maybe it's finished its background indexing. I will see how long it lasts today. There's another useful thread on this very subject.
https://forums.macrumors.com/threads/battery-life-on-macbook-pro-16.2212813/

 

[panadoro]

Update on my battery on the i7 base model, I'm now getting 14 hours on basic light use, browsing, Word and Mail. It took 8 days to reach this point, but now I'm happy.

 

[Donnation]

OP your battery is definitely not normal. Something is causing it to drain much faster than normal.

 

[idkew]

OP, did you ever follow up with Apple?

 

[Kuzbad]

OP, did you ever follow up with Apple?

OP your battery is definitely not normal. Something is causing it to drain much faster than normal.

I don't know what changed, but maybe another week or even two after I posted here, things seemed to settle down. I'm getting very solid battery life right (including when closed).

Today, I unplugged my MBP around 6AM EST. I just opened it for the first time, just shy of noon EST, and the battery is reporting 100%.