On Mac OS, battery status of some connected devices is shown when clicking on the Bluetooth menu, then hovering over a device's entry in the list.
On iOS, some connected devices show a tiny battery status in the top bar.
I wish my TextBlade sent the battery status to the hosts(s) so it would show up in this way.
An alternative would be a special chord reserved for showing the status using the lights in the SpaceBlade. Right now, I briefly disconnect & reconnect to monitor the battery.
@waytools – please don't devote any cycles to this request until general release & shipping are well underway.