Shure SB920, Li-Ion Battery, For ADX2 and ADX2FD handheld transmitters, 8.82 Wh, 3.6 V, 2500m AH, Dimensions: 20.8 x 23.7 x 72.8 mm, Weight: 54g@+*Notes on disposal:* Due to the current battery law, you are obliged as the end consumer to return all used batteries and cells. Disposal with household waste is not permitted! Batteries that contain hazardous substances are marked with a crossed dustbin and with the chemical symbol (Cd = cadmium; Hg = mercury; Pb = lead) of the contained hazardous heavy metal. Used- and rechargeable batteries can be returned free of charge in store, at other points of sale for batteries, or at officially designated public points for disposal management.@+@+