I’m not fully in the loop, but I believe Bambu is pretty blatant about taking everything from the open source community and never giving back. And Josef Prusa even claims that Bambu Labs intentionally uploaded stolen models to Prusa’s site, Printables, in order to see how Prusa handles it - so Bambu can reverse engineer Prusa’s internal processes and clone them to Bambu’s new website, MakerWorld
From my knowledge, it’s kinda the opposite - when a device first runs out of battery, it’s almost always the case that only one of the batteries is truly dead. So if you find that one dead battery and swap it out, you’ll be good again for a surprisingly long while