Specifications: VARTA Type 4922 Reference IEC 6LP3146 Battery Size 9V Height 48.5 mm Weight 46.0 g Electrochemical System Primary Alkaline Manganese (ZN/MNO2) Voltage 9 V OVERVIEW Powerful energy for power-hungry devices, e.g. remote controls for toys, smoke detectors etc. Clear communication of recommended use by way of pictograms "Single Press Out" enables easy opening of the pack and good storage for unused batteries