[perlgod]

About 7 hours on an oldish ThinkPad (T530) on a full charge:

  $ apm
  Battery state: high, 99% remaining, 430 minutes life estimate
  A/C adapter state: not connected
  Performance adjustment mode: auto (1200 MHz)

[Philipp__]

Wow that’s good! I want to get used x220 and new 9 cell battery. If I could pull of 7-9h battery life I would consider it a great success. Btw i would be using only StumpWM, Firefox and Emacs. For media consumption I got MacBooks.

[carlesfe]

On my x230 with the 44wh battery I get around 4-5 hrs with normal usage