G.T.Power A620, Operating Manual

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You can set up the current and the voltage of the battery pack to be charged. The current will be
used for charge or discharge the battery to reach the ' storage ' level of voltage.
The screen shows the present situation during charge process. To stop charging press Batt type/
Stop key once.
7.5 Discharging Lithium battery
The value of discharge current on the left side of screen may not exceed 1C for a maximum safety
and the
final voltage on the right should not be under the voltage level that is recommended by the
battery manufacturer to avoid deep discharging.
To start to discharge, press
Start/ Enter key for more than 3 seconds.
(Discharge current:0.1~5.0A)
This shows the present state of discharge. To stop discharging press Batt type/Stop key once.
7.6 Voltage balancing and monitoring during the discharge
The processor monitors the voltage of individual cells during 'storage-mode' and 'discharge' of Lithium battery pack. It tries to
normalise the voltages to be equal. For this feature, the individual plug of the battry pack should be connected to the individual
port of the charger.
If the voltage of any one or more cells varies abnormally during the procedure, It terminates the process forcibly with the error
massage. If this happens, the battery pack contains the bad cell, or the bad connection of the cable plug. You can easily know
which one cell is bad by pressing INC button at time of showing the error message