Roger 3 on Charging advice

I just bought a Roger 3 and am also new to this forum so excuse me if this is in the wrong topic.
Question: Is it better for the life of the battery to wait until the battery is almost empty before charging or can I charge intermittently without reducing the life of the battery?

https://www.google.com/search?client=firefox-b-1-d&q=lythium+battey+charging+