Battery dying on clip zip

There’s other factors that affect battery life too. Things like Backlight brightness and/or “time on” setting, how often you yourself turn the backlight on to check the artist of the song playing, or switch tracks, etc., whether or not you use the EQ (yes, anything other than normal EQ will consume more power), whether or not there is a micro SD card inserted and how often a song from the card is played, and how old the unit is, meaning how many times has it been charged and discharged. Lithium batteries lose capacity and charge life gradually over time, so one that is a few years old and has been used regularly will not have nearly the battery life as it did when it was new.