20
ENG
9 Using the Charger
9.1.1 I phase (bulk)
The "STATUS" LED constantly lights Red.
In the rst stage of the charging process, the depleted battery is charged with a
constant current until the battery voltage reaches I phase setting voltage (13.5V/27.0V or
13.8V/27.6V). When the battery reaches this voltage level, the charging current gradually
drops. When the current drops down to 80%, the charger switches over to Uo phase setting
voltage (14.0V/28.0V or 14.4V/28.8V or 14.8V/29.6V). Typically the battery is charged to
70-80% of its capacity.
9.1.2 Uo phase (absorption)
The "STATUS" LED constantly lights Orange.
This main charging phase could be set to the maximum of 4/6/8 hours or unlimited, and
the current rises again to its maximum value. The current remains constant as long as the
battery voltage is below Uo phase setting voltage (14.0V/28.0V or 14.4V/28.8V or
14.8V/29.6V). After reaching the setting voltage, it remains constant. However, the current
drops again. Within this main charging phase, the battery is charged to 95% of its capacity.
Note
The charging voltage and the period for the main charging phase (Uo phase) can be selected using the
switch eld S1.
9.1.3 U phase (oat)
The "STATUS" LED constantly lights Green. If the current decreases to 10% or under the
rated current or if the time limit of 4/6/8 hours is exceeded, then the charger switches over
to economy charging (13.5V/27.0V or 13.8V/27.6V).
Note
Batteries may be charged separately from each other if the chargers have double charging or three-fold
charging connections. The outputs are separated internally by diodes, thus the weaker battery will be
always rst charged to the charging level of the stronger battery.
Attention
The maximum battery capacity should NOT exceed the specied capacity, otherwise the
functions of the individual charging phases could be inuenced.
9.1.4 8-day conditioning
If the battery charger stays at U phase for 8 days, it will switch back to 3-stage charging
IUoU, and stay at Uo phase for 60 minutes to revive the battery.
Note
1. 8-day conditioning will be terminated whenever equalization function or half power mode is
activated.
2. When the charger is in the equalization stage or half power mode, 8-day conditioning will NOT be
triggered.