You get a light that blinks when it's at sub 20% batteries. Not like it fucking matters anyway since you just plug it in for 30 minutes and you're good for 1+ week of usage.
Also I'm not sure if you're aware but you don't need to install any bloatware for the superlight series.
Get the Onboard Memory Manager standalone .exe and run that to set your dpi and polling rate ONCE then never touch it again.