just experienced a suddenly drain issue--elipsa is fully charged and just finished sideloading 2k books. before elipsa screen finishing import after disconnected with USB, elipsa suddenly shut down and asking for charging battery. after connecting to USB, it booted up immediately with fully charged battery sign. not sure if it's software bug or hardware issue
i saw someone complained this from search:
https://www.reddit.com/r/kobo/commen...sa_background/
update: returned first one and bought another, same issue. returned second one and bought third one which has earliest serial number. this earliest manufactured one has no such issue.