Francesco Montanari
Head-Fier
Keep in mind the battery gauge will become more accurate after a few charge cycles. That said it's optimistic to expect the full 12-hours battery life (advertised for playback of CD-quality music anyway). If you're playing high-res flac or DSD files the processor has to work harder and therefore eats up more battery. Also if your screen is on a lot, and set to high brightness, it will suck your battery dry. Keep it off as much as possible (unless you're into following lyrics), and set it only as bright as you need to clearly see the display. Hammer it with all guns blazing, sonto speak, and you'll probably find your battery life will drop substantially.
PS. It's rare that I need to use my N3 on long trips, so as long as it lasts a few hours each day and I can top it up every other day, I'm happy. Heck I'm charging my phone twice a day, so 2-3 times per week for a device is a luxury!
Thanks a lot for your answer.
BTW My N3 is always off with brightness on default setting (level 2). The strange thing is the stand by battery drain... With no use it drops 2/3% per hour