As lemonie says - depends on the battery and the lights. Generally with a 2032 battery or two (nonspecific, could be any), and depending on the led, you can get anywhere from 24 hours to a week of useful light. Some continue to glow (if barely) for 2+ weeks up to a month.
Select as Best AnswerUndo Best Answer
Thank you Frollard! Your reply was very helpful and much appreciated.
You're welcome! If its not too much trouble, fire off the 'best answer' (if you think I deserve it) ;)
What battery, which lights? L