Ran out of battery (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ran out of battery</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for died that I've seen before include "Ceased to live" , "faded" , "Pegged out" , "Expired" , "Passed away" .)