GPS 72H Owner’s Manual AppendixBattery InformationWARNING: Do not use a sharpobject to remove user-replaceablebatteries. Contact your local wastedisposal department to properlyrecycle the batteries.Optimizing Battery LifeUse premium batteries for optimalperformance and maximum batterylife.Consider the following suggestionsto maximize battery life:Avoid excessive use ofthe backlight, which willsignificantly decrease battery life.Select a shorter backlighttimeout. See page 24.Turn off GPS when not using.•••Cleaning the DisplayScreenUse a soft, clean, lint-free cloth. Usewater, isopropyl alcohol, or eyeglasslens cleaner. Apply the liquid tothe cloth and then gently wipe thedisplay screen with the cloth.Resetting the GPS 72HIf your GPS 72H stops functioning,you can remove and then reinstall thebatteries to reset the device.