So i have had my galaxy s9 for around a year, and usually my battery works fine, but recently My battery has been draining (i think, 1% lost in 2-3 minutes) and whenever i plug my phone into the charger (had for a few months) instead of saying the usual 3hrs 20 minutes from 1%, it says 5-9 hours, i am not sure if this is a glitch or a genuine problem with my battery.
