charlie0129/batt

Battery charge stuck at 100%

Closed this issue · 4 comments

djkz commented

On macbook air M2, when the daemon is running, the charge shows 100%, even when it's completely unplugged and been running off the battery for a while.

Any way to debug what's causing that, logs also show battery charge at 100%:
time="2023-04-16 09:44:24.906" level=debug msg="batteryCharge=100, limit=75, chargingEnabled=true, isPluggedIn=false, maintainedChargingInProgress=false"

charlie0129 commented

So do you mean the daemon always says it's 100% charge but the actual battery charge you see is not 100%? Or do you mean after running batt, your Mac is always at 100%?

do you mean after running batt, your Mac is always at 100%?

If that's the case, I think you can use your Mac longer to let it drain to see if it works. Apple Silicon Macs do have long battery life. batt shouldn't have the ability nor designed to affect the battery charge your Mac reports.

do you mean the daemon always says it's 100% charge but the actual battery charge you see is not 100%?

Since batt gets battery charge from a SMC key called BUIC, although it should work, it could be M2 have a different key than M1. I think it can be solved by using another way to get battery charge.

PS, What version of batt are you using? Can you try the latest version?

djkz commented

Using the latest version, after installing the daemon system constantly reports 100% charge, on the Os X UI widget and using pmset.

I've ran it for a while on the battery just to make sure that it's not actually fully charged, that thing is a beast but pretty sure an hour of video would at least kill 1% of the charge.

charlie0129 commented

Hmm, that’s really strange. It shouldn’t be able to do that…

So it only reports 100% charge AFTER installing the daemon? There are a couple of ways to debug came to my mind:

  • Will uninstalling the daemon revert the behavior? If so, that’s something interesting.
  • Have you tried rebooting, or resetting SMC, just to rule out some other issues.
  • Can you run batt status to see the wattage of your battery to see how much it is actually discharging?
djkz commented

Seems to work now, one thing that might have caused it is when I launched the daemon I was plugged in and at 100%, when starting on the battery it seems to pick it up correctly.

Will uninstalling the daemon revert the behavior? If so, that’s something interesting.

it didn't immediately reset the percentage, but once it got charged up completely it seemed to start managing the power correctly again.

  • 👍1