LED String Lights Ultra-Thin RED, Bat. Op. Pack of 9, 18 lights each LED String Lights Ultra-Thin RED, Bat. Opp. Pack of 9, 18 lights each. 62" of lights on 22" of lead from battery box, each string takes 3 AA batteries. This is lot of 9 string lights!! Great quality from Bethlehem Lights! Controls have phasing, timer, steady on, and off.