Chosen Solution
Has anyone figured out how to open the headset to access the battery for replacement? Replacement batteries seem to be available https://www.ebay.com/c/10013570523 but I have no idea how to open the headset.
It comes apart in layers. Here are the pics. The Black leatherette cover of the earfoam just pulls off from the backside of it..just be careful!
This is closest to the answer I found: https://www.reddit.com/r/plantronics/com…
Very useful instructions, followed to the letter and worked perfectly. My battery was also only lasting about 2 hours. I found a replacement on alibaba, installed in about 30 minutes. From fully charged it’s now lasting about 14 hours! Yo Marc, thank you for the tip about the foam having a backing film! That definitely saved me damaging mine. Be careful when working down through the layers, as there are cables running through the middle which you don’t need or want to disturb in order to access the battery. Replacing the leatherette cover is relatively simple (as long as you haven’t damaged it in removal, I suppose) - just turn the thing inside-out, place it over the earpiece and roll it back the right way out while in position. Then the edges just need gentle encouragement to sit in the slot neatly.
