nc8000
Headphoneus Supremus
Say what? I can muster that if I keep backlight turned off and shuffle on. If I mess with it to change tracks (turning backlight on), I also get around 4-5 hours. Stock battery, FLAC, low gain, ~140-170 volume, gapless on, slow roll off.
I never get much over 5 hours even in best case. This with the Japan cell Samsung or the stock Pisen or Mugen 2500 mah