Dolphin® 9500/9550 Mobile Computer User’s Guide3 - 11Managing Battery PowerData and files saved on the Dolphin 9500/9550 terminal may be stored in RAM, so it is important to maintain a continuous powersupply to the terminal. When the main battery pack becomes low, the Low Battery Charge icon appears in the notification tray atthe top of the screen. The Critical icon appears when the battery is critically low. There is also a Low Battery icon that appearswhen the backup battery is low. For details about these icons, see Status Icons on page 4-25.Letting the backup battery become fully discharged causes the terminal to lose all data in RAM. Therefore, you should keep acharged battery pack in the Dolphin at all times. The internal battery discharges prematurely if there is not at least a partiallycharged battery in the terminal. When you remove a battery pack, insert another charged battery pack in the Dolphin.The battery status indicator displays in the notification tray when the battery is low or critically low. If there is no indicator, thebattery is adequately charged.If the main battery is low and the terminal is in suspend mode, pressing the SCAN or Power button does not wake the Dolphin9500/9550 terminal; you must replace the discharged battery with a fully charged battery.Default Critical and Low Battery PointsThe Dolphin 9500/9550 is programmed to display warnings when the battery reaches critical and low battery points. There aretwo entries defined in the registry:[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Power]“CriticalBatt”=dword:a“LowBatt”=dword:19“CriticalBatt”=dword:aThis sets the Critical Battery point to 10 percent (a hex = 10 decimal). The critical battery setting is the point at which the customeris warned that the battery charge is very low. This warning is posted every 3 minutes until the situation is corrected.“LowBatt”=dword:19This sets the Low battery point to 25 percent (19 hex = 25 decimal). The low battery setting is the point at which the user is notifiedthat the battery is low. The user is notified only once for a low battery.Setting Critical and Low Battery PointsDevelopers can reset these parameters in the registry from 0 (no warning) to 99 (would nearly always warn). Warnings do notappear when the terminal is on external power.
