Philips Sonicare 7800 Replacing Battery Does The Philips Sonicare Elite 7300 Have To Be Fully Charged Before Working?

Does the Philips Sonicare Elite 7300 have to be fully charged before working? - philips sonicare 7800 replacing battery

My mother bought me a few days (I had braces and my teeth are yellow work lol) and suddenly stopped. Brilliance is in the background, all green, so you can contact? It is common, even on foot.