Introduction
The headphones not charging or needing to be charged constantly can be due to a faulty battery. This guide will help educate users on how to remove and replace a faulty or broken battery. The process is moderately difficult, it requires the use of the standard #00 Philips screwdriver and a new battery which can be received from a Sennheiser facility.
Tools
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Use the #00 Philips screwdriver to unscrew the four 8mm screws.
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Grab the cover and carefully pull off to view inside of headphone.
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Grasp the white box and pull to detach the wires connected to battery
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Pull the battery off from its light adhesive.
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Conclusion
To reassemble your device, follow these instructions in reverse order.
