Battery Cycle Count (UNFINISHED)

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Christian edited this page Jun 15, 2026 · 5 revisions

Temporary notes for: https://github.com/froonix/ec-research/blob/main/documentation/lenovo/h8/pages.md

X200/X230/T440p/T450s, possible candidates for cycle count...

Page 0x01 (BAT0) / 0x11 (BAT1)
Offset: 0xa4
Width: 16-bit

Verified with 4 batteries, 9 more to go!

See _BIX() at T480 ACPI dumps.

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