Repair of Sennheiser Momentum True Wireless earbuds I have a pair of Sennheiser Momentum True Wireless (MTW3) earbuds that had been lost for a while. Once I found them, they had been laying around for a while and the battery was completely drained. I tried to charge them, but they did not charge at all. They are completely dead.
Here they are.
What I could see, there was no obvious way to open them up. I could not find any screws or anything that could be used to open them up, so I used my hot air gun to heat them up any potential glue.