I agree with you. I placed a piece of tap on the base at the far right of the push-to-talk button to prevent locking the button. The primary reason I bought one was because of the 110V adapter but the novelty wore-out quickly and I went back to the stock mic.Ah…I’ve owned three of these Mics. Not because they’re great but I wanted the different colors. I believe if you use the adapter it automatically senses that and disables the battery. I could be mistaken but don’t think so.
It’s a good mic but it’s no D-104. If I recall, I was always accidentally locking down the push to talk button and found it quite annoying. It’s also more directional than it appears.