As posted above, letting your battery get below 30% reduces its lifespan. Taking it down to 1% wasn't a great idea. I doubt doing it once will matter, but you should re-read the advice I posted above, and stop worrying about the numbers so long as the battery life is ok.
The battery/laptop has systems to never let the batt get down below ~lowest/safe~ voltage levels .
1% IS NOT actually 1% . The batt systems wont let it actually get that low ,
REAL 1% WILL destroy lithium batts . That 1% could in fact be any voltage level . Its near meaningless.
% are arbitrary values depending on the software.
Its voltages that matter, you probhably will never see cell voltages so its just some useless % value you'll see.