bug: charging info is not accurate

[ossilator]

Issue type

Feature not working as intended

Device

Xiaomi 11T Pro (vili)

crDroid version

crDroid 11

Exact version / Build date

11.5/2025-05-17

Bug description

for several weeks (months?) now, the charging info shown on the ambient display makes no sense anymore.

for the voltage, it's now showing the battery voltage, rather than the input/charger voltage. that might make sense as such, but it makes it a lot harder to identify whether the charger operates in fast charging mode, i.e., whether it's operating at raised voltage (9 or even 20 volts). additionally, the voltage is affected by #641.

for the current, it's showing ... something that appears kinda random, but always way too low.

for example, now on my desktop's usb port, it's showing 7.9V and usually something between 50 and 500mA (each time i plug it in something else), with a resulting power below 2.5W, which is obviously too little. the same happens with regular chargers, whether they support fast charging or not.

with the matching xiaomi charger, it showed something like 12A 68W. at the battery, it should be something on the order of 28A, for the expected 120W.

Steps to reproduce

1. enable extended battery info on AOD/lock screen
2. plug into charger while not fully charged

Relevant log (logcat/build log)

nothing particularly interesting in the logcat.

but then there is this:

vili:/ $ dumpsys battery
Current Battery Service state:
  AC powered: false
  USB powered: true
  Wireless powered: false
  Dock powered: false
  Max charging current: 188000
 Time when the latest updated value of the Max charging current was sent via battery changed broadcast: 0
  Max charging voltage: 8010000
  Charge counter: 1428000
  status: 2
  health: 2
  present: true
  level: 68
  scale: 100
  voltage: 8010
 Time when the latest updated value of the voltage was sent via battery changed broadcast: 0
 The last voltage value sent via the battery changed broadcast: 8010
  temperature: 290
  technology: Li-poly
  Charging state: 0
  Charging policy: 0
  Capacity level: -1
  Maximum capacity: 2242000
  Design capacity: 5000000

this reflects /sys/class/power_supply/battery/current_now & co, and corresponds with the info shown on the display, so the bogus current is clearly a kernel/driver problem.

the values in /sys/class/power_supply/usb/ seem reasonable (5V 500mA while connected to desktop).

Screenshots or videos

No response

Solution

No response

Additional context

No response

Acknowledgements

• I've checked device is officially supported (for device specific reports and not source related).
• I'm running latest version available on crdroid.net for this device
• I have searched the existing issues and this is a new and no duplicate or related to another open issue.
• I have written a short but informative title.
• I filled out all of the requested information in this issue properly and understand that not doing so will automatically result in closing of ticket.

[swiitchOFF]

Values shows on screen not accurate (Not important)
Off screen it's charge fine and fast well (important)

[ossilator]

well, it's important when i can't trust how fast it is charging (wrong charger, bad cable, etc.).
also, if it's not important, then why would the feature even be there?

[swiitchOFF]

[gwolf2u]

Values shows on screen not accurate (Not important) Off screen it's charge fine and fast well (important)

can't fix via overlay?
just check node

[swiitchOFF]

video_2025-07-04_13-07-34.mp4

Fixed

[gwolf2u]

61000W not good
Check divider (needs /1000)

[swiitchOFF]

using 120w charger

[gwolf2u]

And yet stats are wrong still
61kW charger lol 😂

[swiitchOFF]

another test soon