I fell asleep listening to the 1/23/23 #playlist https://www.minorkey.net/minor-key-playlists/minor-key-net-playlist-1-23-23 when I woke up it was STILL playing, it is so long. My Astell&Kern KANN ALPHA was at 1% 😯 🥴 😬 I never let it get below 70% before plugging it into the charger. Normally it is plugged into the charger at all times unless I'm mobile around the house. This #AstellAndKern is suppose to have a 12 hour battery life, but that is completely NOT true. It's buggy besides that, but the sound quality is so great, it's all forgivable.