ISDT Q6 PLUS Operating Instructions Manual page 10

Task Setting
The working mode of the charger is series charging; you must therefore connect it to the output
line of the battery while charging. For a lithium battery, it is highly suggested that the balanced
interface should be connected to carry out balanced charging to accurately monitor the voltage
of each cell and balance the ones with bad consistency.
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When selecting storage functions, automatic charging task can be initiated if the battery is
lower than the preset storage voltage; likewise, automatic discharging task can be initiated if
the battery voltage is higher than the preset storage voltage. To save time during charging
and discharging tasks, the voltages of cells should not be accurately balanced; however, it is
normal phenomenon that there may be some errors between cell voltage and preset value as
the tasks are completed[Unclear (very confusing).
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Activation and restoration functions of excessive discharged battery
When the charging task begins, a 0.1 A current should be applied to activate and restore the
battery if the cell voltage is tested to be lower than the pre-charge voltage; on the other hand,
it should be adjusted to a rated voltage for charging when the cell voltage is higher than the
pre-charge voltage. This design can protect excessively discharged batteries, as well as
conduct activation and restoration.
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The charger is equipped with a function of measuring the cells' internal resistance, which is
only applied when conducting balanced charging. The cell voltage should be measured and
calculated within 2 to 3 minutes after the charging task has been initiated. The battery internal
resistance can slightly vary under di erent electric quantities while the measured resistance
value is usually relatively low as the electric quantity is large.
The charging current should be adjusted instantly as the charger measures the internal
resistance of the battery; therefore, it is normal phenomenon for acute change of current to
occur during charging.
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