Fluke 199C/S FE 192,196,199 C Users Manual - Page 93

Extending Battery Operation Time, User Options, Do not disconnect the battery charger during

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Extending Battery Operation Time Typically, NiMH batteries always meet the specified operating time. However, if the batteries have been extremely discharged (for example, when empty batteries were stored for a long period) it is possible that the battery condition has deteriorated. To keep the batteries in optimal condition, observe the following guidelines: • Operate the test tool on batteries until the symbol appears at the bottom of the screen. This indicates that the battery level is low and that the NiMH batteries need to be recharged. • To obtain optimal battery condition again, you can refresh the batteries. During a battery refresh, the batteries will be fully discharged and charged again. A complete refresh cycle takes about 12 hours and should be done about four times a year. You can check the latest battery refresh date. See section "Displaying Calibration Information". 8 Maintaining the Test Tool Extending Battery Operation Time To refresh the battery, make sure that the test tool is line powered and proceed as follows: 1 Display the USER key labels. 2 Open the User Options menu. A message appears asking whether you want to start the refresh cycle now. 3 Start the refresh cycle. Do not disconnect the battery charger during the refresh cycle. This will interrupt the refresh cycle. Note After starting the refresh cycle, the screen will be black. 85

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Maintaining the Test Tool
Extending Battery Operation Time
8
85
Extending Battery Operation Time
Typically, NiMH batteries always meet the specified
operating time. However, if the batteries have been
extremely discharged (for example, when empty batteries
were stored for a long period) it is possible that the battery
condition has deteriorated.
To keep the batteries in optimal condition, observe the
following guidelines:
•
Operate the test tool on batteries until the
symbol
appears at the bottom of the screen. This indicates
that the battery level is low and that the NiMH
batteries need to be recharged.
•
To obtain optimal battery condition again, you can
refresh
the batteries. During a battery refresh, the
batteries will be fully discharged and charged again.
A complete refresh cycle takes about 12 hours and
should be done about four times a year. You can check
the latest battery refresh date. See section “Displaying
Calibration Information”.
To refresh the battery, make sure that the test tool is line
powered and proceed as follows:
1
Display the
USER
key labels.
2
Open the
User Options
menu.
A message appears asking whether you want to start the
refresh cycle now.
3
Start the refresh cycle.
Do not disconnect the battery charger during the
refresh cycle. This will interrupt the refresh cycle.
Note
After starting the refresh cycle, the screen will be
black.