articles/2025/TLP-recalibration-error-on-Thinkpad-X220.html


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<h2>TLP recalibration error on Thinkpad X220</h2>
<h3>2025-04-08</h3>
<h4>Error: cannot read charge level of battery BAT0</h4>
<p>My attempt to recalibrate the battery on my X220 failed. Hunting for info I found <a href="https://github.com/linrunner/TLP/issues/793">this on github</a>
<p>It's a TLP bug that was fixed a couple of weeks ago. The solution was to install the git versions of tlp.</p>
<code>yay -S tlp-git tlp-rdw-git</code>
<p>Now I can plug in my X220 to the mains and run tlp recalibrate BAT0 overnight.</p>
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