what type of batteries does this camera use? The 123/3v lithium only lassst 1 1/2 days,

Perhaps if you are letting these cameras run constantly you will use the batteries up rather quickly. They take regular camera batteries and not expensive. The idea is to monitor motion when someone enters the premises when you are not there or first enter your home, not to be used as constant motion watching all day and and all night as people wander around the premises. Just turn them on when you leave and off when you enter. Problem should be solved.