Nx cr9v p pp3 style battery enix prl9002 u9vl p this battery is used mainly for home protection smoke detectors security and medical applications where frequent battery changes are inconvenient or impractical although this battery can be used in any 9v device p p the battery provides immense power and endurance through extreme temperatures lasts up to 10 times longer than carbon zinc batteries 100 free of mercury lead cadmium other codes associated with this battery are pp3