Managing Battery Power

Power

5 VDC Port

This port connects the Dolphin 7400/7450 to DC power for powering peripheral devices and charging the main and backup batteries. Power is fed through the RS-232 communications port.

Batteries

CAUTION: Use only the 3.6V battery packs provided by HHP. The use of any other battery pack in the Dolphin 7400 terminal will void your warranty and may result in damage to the Dolphin terminal or battery.

There are two batteries in the Dolphin:

Internal NiMH Backup Battery

Located inside the Dolphin, this battery backs up the RAM and clock when the NiMH main battery is discharged or removed from the terminal. The internal backup battery is not user replaceable.

NiMH Battery Pack

The battery pack is the primary power source for operating the Dolphin terminal.

Internal NiMH Backup Battery

The Dolphin’s internal backup battery prevents the terminal from being reset if you need to remove and replace the main battery pack. The battery retains RAM data and allows the real-time clock to remain operational for up to 30 minutes when the battery pack is removed. For the initial charging cycle, it is recommended that the terminal be charged for approximately 8 hours to allow adequate charging time for the back-up battery. Not doing so may result in the terminal becoming unstable should the unit lose power and the backup battery is required.

If the backup battery becomes discharged of power after the initial charge cycle, it will require a minimum of 5 hours of charging time to perform and maintain the system as described above.

The internal backup battery is charged by the Dolphin’s main battery pack when an external power source such as the Dolphin HomeBase, is not available. If the terminal is left without the main battery pack for more than 30 minutes, the internal backup battery will need to be recharged.

Note: Data and programs stored in FLASH remain safe even if the internal backup battery fails. However, you must reset the real-time clock using the Windows® CE Time and Date function.

Follow these guidelines to maximize the life of the Dolphin’s backup battery:

•Keep a charged NiMH battery pack in the Dolphin. The internal battery will prematurely discharge if there is not at least a partially charged battery in the terminal.

•Put the Dolphin in the HomeBase when the terminal is not in use.

Main Battery Pack

The 3.6V, 2700 mAh Nickel-Metal-Hydride (NiMH) battery pack is the primary power source for the Dolphin. Other NiMH batteries may be approved by HHP to work with your Dolphin. Contact HHP for more information.

The 2700 mAh NiMH battery is designed to operate in a temperature range of -10 to 50° C (14 to 122° F). For maximum performance, charge the batteries between 10 and 35° C (50 and 95° F).

Data and files saved on the Dolphin 7400/7450 terminal may be stored in RAM, so it is important to maintain a continuous power supply to the terminal. When the main battery pack becomes low, the Low Battery Charge icon will appear in the notification tray at the bottom of the screen. The Critical icon will appear when the battery is critically low. There is also a Low Battery icon that will appear when the back-up battery is low.

Letting the back-up battery become fully discharged will cause the terminal to lose all data in RAM. Therefore, you should keep a charged battery pack in the Dolphin at all times to conserve the internal back-up battery. When you remove a battery pack, insert another charged pack in the Dolphin. The internal battery will prematurely discharge if there is not at least a partially charged battery in the terminal.

A battery status indicator will display in the notification tray when the battery is low or critically low. If there is no indicator, the battery is adequately charged.

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