How come the battery life of my mp4 is much less than stated in the specifications?
That is because your battery is not fully charged. To fully charge the mp4, turn off the mp4 and leave the mp4 plugged to the USB port for about 3 hours. This is the fastest way to charge it. It can also be charged while turned on, however, it will not be able to charge to 100% while on, only up to about 90% after 3 hours. Check here for benchmark of real life X8 battery life under different conditions. For mp3 playback, turn off the screen if you want longer battery life.
