0 Astro and DC 40 Owner’s ManualAppendixBefore storage, charge the battery toapproximately 50% of capacity andstore it in a cool, dry location wheretemperatures are not expected toexceed typical household levels.Do not store a fully depleted batterybecause it may not recharge after anextended period of storage.After storage, fully charge thebattery again before using theDC 40.Maximizing Battery LifeUsing the Astro Battery SaveOptionFrom the main menu, selectAdvanced > Settings > System >GPS > Battery Saver.•••Decreasing the BacklightExtensive use of screen backlightingcan significantly reduce battery life.You can adjust the backlight brightnessand decrease the backlight timeout tomaximize battery power.1. Quickly press .2. Adjust the brightness.Adjusting the Backlight TimeoutFrom the main menu, selectAdvanced > Settings > Display >Backlight Timeout.Decreasing the Update rate of theDC 401. Press DOG > MENU.2. Select Show Info.3. Press MENU.4. Select Change Comm. Settings.5. Change the update rate.