tery automaticallywhen it’s fully charged. It normally takes about four hours to
fully charge the battery.The instrument can be operated while th e battery is be-
ing charged.
CAUTION:DO NOT leave the AC adapter plugged in for more than 24
consecutive hours or, the battery life could be degraded.
The battery pack can be used for aminimum of 500 charge-discharge cycles
before needing to be replaced. Replacement battery packs are availablefrom
the manufacturer.The battery pack can be easily removed and replaced in the
fieldby following this procedure:
1. Power the 1522 off and unplug the AC adapter.
2. With the 1522 facing down, lift the stand to expose the battery cover (see
Figure 5). Remove the battery cover screw with a small Philip’s screw-
driver. Remove the battery cover to access the battery pack.
3. Remove the battery pack by gently disconnecting the battery plug from
the connector.Note the orientation of the battery plug on the
connector.
4. Attach the polarized plug of the new battery pack onto the connector in
the same direction as before (see Figure 5 on page 25). Place the battery
pack in the battery compartment.
5. Replace the battery cover and screw.
6. Plug in the AC adapter and charge the new battery for a minimum of
four hours for its initial charge.
WARNING:Used batteries must be disposed of properly. Check your lo-
cal regulations for additional information. Never dispose of batteries in
fire as this may result in explosion with the possibility of personal injury
or property damage.
6.2 DC Power Source
The DC powersource provides power to charge the battery. It can also be used
to powerthe 1522 while the battery is being charged. The AC adapter provided
withthe 1522 is intended to be used for these purposes. Use only the AC
1522 Handheld Thermometer Readout
User’s Guide
26