3. Remove the bung from the AC/DC adaptor socket.
4. Connect the AC/DC adaptor and switch on.
5. The charging cycle will commence and last approximately 17 hours. Follow the progress using the
charge status LED as shown in Figure 2.
NOTE: The instrument ambient temperature should be between +10ºC (50ºF) and +40ºC (105ºF)
during the charging cycle.
Figure 2: charge status LED progression
Battery type
DET3TA, DET3TC, DET3TD, DET4TD2, DET4TC2: 8 x AA (LR6) 1.5V Alkaline.
Megger part number: 25511-841.
DET4TR2, DET4TCR2: 8 x AA (LR6) 1.2V NiMH 1800mAhr.
Megger part number: 25985-031.
Battery replacement
Battery replacement
Warning: Do not operate instrument with the battery cover removed.
Warning: Incorrect battery cell polarity can cause electrolyte leakage, resulting in damage to the
instrument. If the battery condition indicator does not show a full charge when battery cells are new, a cell
may be reversed.
Warning: To avoid damage by leaking electrolyte or deep discharge, do not leave cells fitted in an
instrument, which will remain unused for extended periods of time.
1. To avoid the possibility of electric shock, switch instrument OFF and disconnect the instrument
from any electrical circuits.
2. The rear cover must not be opened if the test leads are connected.
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