The battery sizes on most satellites are very small due to weight considerations and probably more so in starlink , and is designed to last few hours at best,

The battery sizes on most satellites are very small due to weight considerations and probably more so in starlink , and is designed to last few hours at best, so how it is charged first time is not likely significant . I had mentioned elsewhere I am sidestepping the carbon footprint of undersea cable laying to building and launching satellites as they are fixed upfront and not per packet sent. However I am pretty confident laying cables and digging all the other infra to your home and all the ISPs connects is definitely more carbon intensive than building and sending satellites on reusable rockets.