https://bugzilla.kernel.org/show_bug.cgi?id=196701

            Bug ID: 196701
           Summary: no battery info on thinkpad tablet 10
           Product: ACPI
           Version: 2.5
    Kernel Version: 4.13.0-0.rc5
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Battery
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

Created attachment 258009
  --> https://bugzilla.kernel.org/attachment.cgi?id=258009&action=edit
dmesg.txt

There's no battery info on thinkpad tablet 10, this is a baytrail tablet.
Dmesg shows multiple
[    0.403022] i2c i2c-0: i2c read failed
Tracing that back to the source we end up in acpi_gsb_i2c_read_bytes()
I assume this might be related to the missing battery info.
ACPI battery is somewhat detected
[    3.182363] ACPI: Battery Slot [BAT0] (battery absent)
The battery is present indeed.

Attaching full dmesg, let me know what else you need.

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