Car found in uncertain place, when battery lead dropped (4)
I believe the answer is:
limo
'car' is the definition.
(limo is a kind of car)
I cannot understand how the remainder of the clue works.
(Other definitions for limo that I've seen before include "Luxurious car (colloq.)" , "vehicle" , "Luxury car" , "Set of rooms" , "Stretched car (abbr)" .)