I've had my Mini2 for a few years now and seem to have had a persistent problem. The battery shows 98% when it's fully charged (which makes sense) but when it's unplugged and left on, it stays at 98%. If I check back after a long time, it'll be at 1%. Has anyone experienced this or knows why the battery indicator jumps from 98 to 1%? Any way to reset this? I've already tried the full drain and recharge method to "recalibrate" the internal/software voltage conversion.