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MI 3152(H) EurotestXC (2,5 kV) General description
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1.3 Battery and charging
The instrument uses six AA size alkaline or rechargeable Ni-MH battery cells. Nominal
operating time is declared for cells with nominal capacity of 2100 mAh. Battery condition is
always displayed in the upper right display part. In case the battery is too weak the instrument
will be turned off automatically.
The battery is charged whenever the power supply adapter is connected to the instrument.
Internal circuit controls charging and assures maximum battery lifetime.
Refer to chapters 3.2 Connector panel and 4.4.2 Battery indication for power socket polarity
and battery indication.
Notes
The charger in the instrument is a pack cell charger. This means that the battery cells
are connected in series during the charging. The battery cells have to be equivalent
(same charge condition, same type and age).
If the instrument is not to be used for a long period of time, remove all batteries from the
battery compartment.
Alkaline or rechargeable Ni-MH batteries (size AA) can be used. METREL recommends
only using rechargeable batteries with a capacity of 2100 mAh or above.
Unpredictable chemical processes can occur during the charging of battery cells that
have been left unused for a longer period (more than 6 months). In this case METREL
recommends repeating the charge/discharge cycle at least 2-4 times.
If no improvement is achieved after several charge / discharge cycles, then each battery
cell should be checked (by comparing battery voltages, testing them in a cell charger,
etc.). It is very likely that only some of the battery cells are deteriorated. One different
battery cell can cause an improper behaviour of the entire battery pack!
The effects described above should not be confused with the normal decrease of battery
capacity over time. Battery also loses some capacity when it is repeatedly charged /
discharged. This information is provided in the technical specification from battery
manufacturer.
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