You'll get the hang of taking the battery out and in. It takes some finesse and fine hand movement to initially align it when installing and then when it is positioned into the many splines; and then it gets a final hard whack for the last sliver of engagement.
You'll get it fixed. Will your local shop work on it? If not, to go all the way back to Phoenix will be inconvenient.
From what I've seen, when people have problems with their Specialized, Specialized steps up and fixes things. That's a big reason I went with a major brand, as I figured electric bikes aren't a mature product with a set design, best to go with a big player who will stand behind their product.
Our bikes have more sensors than many bikes for smoothness; cadence, speed,and torque. When it works, as it has for Jan and my bikes perspective, the whole pedaling experience is as smooth as butter, seamless integration and such a silk smooth operation, every day we can't wait to ride again.
Hope you get your's working as it's supposed to soon!