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4. It can no longer provide 1 hour of talk-time following a full charge (a battery will
reach a near-full charge condition after AC power has been on for 24 hours
continuously).
5. When it no longer can provide at least 16 hours of standby time following a full
charge (a battery will reach a near-full charge condition after AC power has been on
for 24 hours continuously).
Battery Replacement
1. Before you begin, make sure that you have purchased a new battery.
2. Place the antenna down into the down position, or if you are using an external
antenna, disconnect the antenna.
3. Disconnect the SAU-1900E’s AC power supply from the wall outlet, and then from
the back/top of the SAU-1900E.
4. Disconnect all telephone lines that are plugged into the back/top of the SAU-1900E.
5. If you have installed your SAU-1900E using the desktop installation, skip to step 14.
Otherwise, you will need a small, Phillips head screwdriver.
6. Place a soft cloth on a flat work surface, such as a table.
7. Holding onto the top of the SAU-1900E with one hand, push the bottom of the SAU-
1900E up gently until you feel it unlock.
8. Pull the SAU-1900E gently toward you. It should come off the wall plate.
9. Unplug the short telephone cable that is plugged into the wall plate.
10. Remove the short telephone cable from the bracket by pulling the cable through the
small opening in the bracket between the prongs. Save this cable, you will need it to
reinstall the SAU-1900E.
11. Place the SAU-1900E on the soft cloth, with the bracket side up and the screws
toward you.
12. Unscrew the screws that are holding the bracket in place.
13. Move the end of the bracket where the screws were located up slightly, and then pull
the bracket toward you to remove the bracket.
