MI 3109 EurotestPV Lite
Safety and operational considerations
10
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 2100mAh 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 behavior 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.
