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+<!-- Generated file, you may edit and discard src/inc/sony-wf1000xm3-battery.md :) -->
+<span class="date">
+2025-01-10
+</span>
+<h1 id="sony-wf-1000-xm3-battery-replacement">Sony WF-1000 XM3 battery
+replacement</h1>
+<p>I’ve had these since 2021, while they are a bit bulky I am happy with
+them and use them mostly around the city to listen to podcasts and the
+occasional bit of music.</p>
+<p><img
+src="/media/content/sony-wf1000xm3-battery/headphones.jpg" /></p>
+<p>After they would first slowly show signs of not holding their full
+charge anymore, the batteries completely died on me after some 3 years.
+I was fully prepared to have to throw them out when I learned that the
+batteries are just standard cells and can be easily swapped.</p>
+<p>Before you start, get the following:</p>
+<ul>
+<li>CP1254 A3/LIR1254 3.6V batteries</li>
+<li>plastic spudger</li>
+<li>(optional) 2 picks</li>
+<li>phillips head 000 screwdriver</li>
+</ul>
+<p>Ok, let’s go:</p>
+<p><img src="/media/content/sony-wf1000xm3-battery/01_pry_open.jpg"
+class="sm left" alt="pry open" /> <img
+src="/media/content/sony-wf1000xm3-battery/02_lid_off.jpg"
+class="sm right" alt="lid off" /> Use a spudger or ideally two guitar
+picks and wedge them in to the thin gap between the top cover and the
+base of the earphones. Don’t worry about breaking anything. As long as
+the material of your tools is plastic, you won’t damage anything. This
+is by far the most tedious step of the process (if you don’t have the
+picks). There is a little bit of adhesive behind the lid, so once you
+get the halfs to seperate you might have to widdgle a little.</p>
+<p><img src="/media/content/sony-wf1000xm3-battery/03_screws_out.jpg"
+class="sm left" alt="screws out" /> <img
+src="/media/content/sony-wf1000xm3-battery/04_lift_top.jpg"
+class="sm right" alt="lift top" /> With the phillips head remove the two
+screws that secure the visible part in place and then carefully lift it
+out, flip it over. There is a ribbon cable connecting the touch sensor
+and LED on the top to PCB deeper inside the earpiece.</p>
+<p><img src="/media/content/sony-wf1000xm3-battery/05_battery_out.jpg"
+class="sm left" alt="battery out" /> To remove the old battery I found
+it easiest to push the spudger into the little gap in the plastic where
+the ribbon cable connects to the top part. It is also glued in; be
+careful not to pull out the contact points as well. If possible try to
+preserve the glue, it will come in handy when securing the new battery
+in place. I also scraped off what was stuck to the old battery and
+pushed it back into the housing.</p>
+<p><img src="/media/content/sony-wf1000xm3-battery/06_battery_in.jpg"
+class="sm right" alt="battery in" /> Before putting in the new battery
+make sure to check the writing on it or use the shape as a reference to
+figure out which side is the negative pole. Put that side down, touching
+to the contacts. The replacement batteries I got where a different brand
+and had all the labeling on the plus pole. While the original VARTA
+branded batteries had it exactly reversed. On my first attempt I didn’t
+pay attention and put them in the wrong way around.</p>
+<figure>
+<img src="/media/content/sony-wf1000xm3-battery/battery_comparison.jpg"
+alt="battery comparison" />
+<figcaption aria-hidden="true">battery comparison</figcaption>
+</figure>