ZPDA (250-3100)                  Batteries             Faxback Doc. # 2638
  

Your unit is shipped with three AA batteries for main power and two CR2032
lithium button cell batteries for memory backup already installed.

BATTERY LIFE

NOTE: Use of Lithium batteries versus Alkaline batteries in the Z-PDA, will
      NOT effect battery life or performance in this device.  There are no
      significant differences in operating life between alkalines and 
      lithium batteries.

The life of the battery that comes with the unit starts when the battery is
loaded at the factory.  The life you get from the battery might be shorter
than normal because of the time the unit spends on transport and on the
shelf.

  Main Battery Life: Approximately 100 hours
Backup Battery Life: 5 years if main batteries replaced as soon as they
                     become weak.  2 months if dead main batteries are
                     left in the unit.

We recommend you not use rechargeable batteries to power your unit, and 
never try to recharge the supplied batteries.

Replace the main batteries:

- Whenever the unit displays a low battery power message.
- If the screen remains blank when you turn on power or reset the unit.
- Every year, regardless of how often you use it.
- Replace the backup batteries at least once every five years, or when the
  unit displays a low-backup battery power message.

Put a reminder in the DATE BOOK to let you know when to replace the
batteries.

To save power, the display automatically turns off if you do not use it for
six minutes.  To turn it back on, pull the power switch toward the bottom 
of the unit.  When you turn it back on, it returns to the application you 
were using.

Note: You can change the automatic turn off time. See Chapter 11.


HINTS

Incorrectly installing the batteries can cause them to burst or leak and
damage the unit.  Observe the following precautions when you install
batteries.

- Be sure to observe proper polarity (+ and -) when you install the
  batteries.
- Never mix batteries of different types.
- Never mix old and new batteries.
- Never leave weak or dead batteries in the unit.
- Do not expose the batteries to direct heat, let them become shorted, or
  try to take them apart.
- If a battery leaks, immediately clean out the unit's battery compartment.
  Take care to avoid having the battery fluid touch your skin.  If it does
  so, flush skin thoroughly with water.
- Keep batteries out of the reach of small children.  If swallowed, consult
  with a physician immediately.

MAIN BATTERIES

The unit uses three AA batteries for main power.  For longest life, we
recommend you use alkaline batteries.

To replace the main batteries:

1. Turn off the power.
2. Slide the battery compartment cover in the direction indicated by the
   arrow.
3. While pressing down on the lock switch, slide the lock switch and main
   battery cover in the direction indicated by the arrow.  The main battery
   cover also moves when you move the switch.
4. Remove the main battery cover.
5. Remove the old batteries and replace them with new ones.
6. Place the main battery cover over the batteries.  The square cut-out on
   the cover should fit over the raised square on the lock switch.
7. Return the lock switch to its original position. The main battery cover
   also moves.
8. Replace the battery compartment cover by sliding it into place.

Note: If you do not correctly return the main battery cover and the lock
      switch to their original positions, you can not close the battery
      compartment cover.

BACKUP BATTERIES

The unit uses two lithium batteries (CR2032) to protect the information in
its memory when the main batteries are removed or dead. Replace the
batteries at least once every five years, or when the unit displays a low
battery message.

Caution: To prevent possible loss of information, do not remove the backup
         batteries and the main batteries at the same time.

To replace the backup batteries:

1. Turn the power off.
2. Slide the battery compartment cover in the direction indicated by the
   arrow.
3. Remove the two screws that hold the backup battery cover in place, and
   then remove the cover.
4. Remove the old batteries and replace them with new ones, making sure that
   their positive (+) sides are facing up.
5. Replace the backup battery cover and secure it with two screws.
6. Replace the battery compartment cover by sliding it back into place.

(clh-09/28/93)