Sennheiser HD 4.50 Battery Replacement

ID: 141869

Description: This guide will demonstrate how to replace a...

Steps:

1. Locate the side designation on the headband-earpiece junction.
2. The battery is on the left side.
3. The motherboard is on the right side.

4. Remove the ear pad from the left ear cup.
5. Refer to the Ear Pad Removal guide for more guidance.

6. Use a Phillips #00 screwdriver to remove the four 10 mm screws holding the ear cup cover in place.
7. Use an opening tool to pry open the cover.
8. Remove the cover.

9. Use a spudger to pry the battery from the plastic case.
10. The battery is held down by a strong adhesive, so it will give resistance. You can apply a few drops of high concentration (>90%) isopropyl alcohol to the base of the battery to loosen it.

11. Using tweezers, pull the white battery connector upwards out of its socket.
12. Remove the battery.
13. Silicone sealant and foam tape has been used to segregate the two compartments. This will rip when the cable is removed. It can be replaced with fresh silicone if desired.