LIR li-ion botton battery 1,LIR2450 Lithium battery 2,Qulity guarantee. 3,Best service. Specificationsli-ion battery feature high energy density, high capacity, ... ion battery (3.7V, LIR2450):1) Type: Button Li-ion; Bluetooth/MP3 Polymer Li-ion; Mobile Phone Polymer Li-ion; Li-ion Button; Notebook Computer/DVD/PDA Polymer Li-ion. ... Packing standard safty packing 3.6v Li-ion LIR2450 Botton cell battery