9Insert one AA/LR6 battery as follows.1 Open the cover.Slide the battery compartment coveras shown by the arrows to open thecover.2 Insert the battery.Insert the battery with the negativeterminal first, all the way in.3 Close the cover.Close the cover and slide it as shownby the arrows.Battery LifeThe receiver can be used for about 39 hours under default settings witha new AA/LR6 alkaline battery (based on Canon testing standards).Battery life varies depending on the positioning interval for locationinformation, as well as GPS signal conditions (p.19).Inserting the BatteryUsing AA/LR6 batteries other than the alkaline type may cause improperbattery contact due to the irregular shape of battery contacts.NiMH and Li-ion AA/LR6 batteries can also be used.