Three half size AA batteries, shrink-wrapped together with two wires and a two pin connector. 3.6 Volt NiCad Cordless Phone Battery. Fits models; AT&T 4905, AT&T 4935, AT&T 4952, AT&T 5491, Bell South 670X, Bell South 700, Bell South 884, Cobra Batteries, Cobra CP2507, Cobra CP469, Cobra CP482S, Cobra CP483, Cobra CP485S, Cobra CP82, Cobra CP83, Cobra CP85, Cobra CP86, Cobra CP865, Cobra CP86S,