There are a total of:
1) 27 LED strips (mostly 50 cm long except for a few at 1m long) powered by one 9V battery for each strip
2) 10 LED bulbs (0.5 cm) powered by six AA batteries
3) 1 LED bulb (5 cm I think...) powered by eight AA batteries (12V)
For the 5mm bulbs, they can last around 2 weeks. For the strips, they can last for a few days. For the 5cm LED bulb, I do not know it lights up only when I trigger it...