I am with you on this. I went with this as I personally feel I don't want another battery device to maintain and charge.

I also want to make sure that those who use the keypad are 99% at their home desk because we can nail that experience better than building a mobile variant right now. I'm planning a mobile version (keyfob/earpiece) for the future that would cover a wider audience's needs.

However, perhaps eventually there will be a battery variant; from an engineering perspective, it adds complexity to make sure that it lasts and handles different environments. I thought about adding battery and giving customers a wireless charging pad so that it can just sit on it. But I told myself, for v1, let's just make it stationary just like mechanical keyboards; reliable, simple, minimal.