Couldn’t that be calculated on paper?
Regardless, there still is the trade-off: adjust the pitch tighter with a small battery hit; or keep the pitch as is with the longer battery life. Note that the pitch target was improved with the Clip+ from the Clip.
Personally, I think that an estimated 14-1/2 hour battery life for something this small is pretty bloody amazing and allows for, essentially, a full day of play. And the loss of 1/2 an hour is not major. But it could be a marketing issue, perhaps, and I don’t know what the majority of users would feel.