macOS Big Sur update 10.13 - Battery drain

App & System Services Core OS macOS

Created Nov ’20

Replies 18

Boosts 0

Views 4.8k

Participants 14

Greeting fella Big Sur users!
After the update I notice a HUGE difference between my previous (macOS Catalina) and latest (macOS Big Sur) battery drainage. My battery health lost 7 percentage immediately and the battery is draining 3x times faster than before.
Example: I use the Preview all the time to open pdf files. I monitor my time on the MacBook and most of the time on 70 percent I had roughly 13:42 hours left. Now the (after the update) time reduced to 4 hours or so. I also compared battery drainage on both OS and Big Sur is eating a lot more on the same config. (2019 13 inch stock MacBook )
I'm looking forward to any suggestions or solutions!

Answered by KK4 in 646517022

I have the exact same problem. Huge battery drain with Big Sur. Also there is no way to check "Battery Health". It is no longer available on the Battery menu. Macbook Pro 2015 15"

Boost

saboteurX OP

Feb ’21

Same here, Macbook Pro 13' with Touch Bar, from 6 hours minimum to 2 hours max.
This is simply unacceptable, apple can't encourage people to upgrade without letting them know they will have ⅓ of the power they had before.

EW94 OP

Feb ’21

Yes - another user with severe battery drain here, on my MBP 2015 13" whilst in sleep mode. I see in the Usage History that I put it in sleep mode at 9.30pm but it doesn't start really draining until 9am the next morning when it will lose 50% charge in just over 4 hours.

Catalina OS it used to lose 1-5% battery if that if left in sleep mode.

Gurdeep OP

Apr ’21

With MBP 2020 13 in model, facing same issue. During hit and trail found out that when I logout my apple id, battery works fine during sleep. Emails are updated and everything goes well. However once I login with apple id the problem starts again. May be software glitch related to icloud update in background.