A7
Rescuing Drained Battery
When charger is connected to a battery, before the start of charging process, the charger automatically detects the
voltage of the battery. If voltage is below 4.5V (for 12V battery) and 16V (for 24V battery) the
INVATEC
SC-7 charger will
not start due to its internal safety circuit. It initiates pulse charging mode if the voltage is in the range of 4.5V±0.25V to
10.5V±0.25V (for 12V battery) and 16V±0.25V to 21V±0.25V (for 24V battery). Once voltage of battery rises to
10.5V±0.25V (for 12V battery) or 21V±0.25V (for 24V battery) charger changes over to previously selected charging
mode. Now the battery can be charged faster and safely. Most drained batteries can be charged and used again using
this procedure.
MODE 4 (14.7V/7A)
This mode is suitable for charging 12V batteries with capacity range from 14-230Ah in cold conditions or charging several
AGM batteries. Connect the output terminals of the charger to the battery with right polarity. Connect the power cord to
the power outlet to begin charging.
Press the selection button
⑭
to select Mode 4 (LED 5). After executing this operation the corresponding LED
display
⑤
will light up. If no further process is activated, the electronic system will automatically start the charging
with a current of 7.0A ±10%. Charging shall continue in several stages:
⑩→
⑪→
⑫→
⑬
until battery is
fully charged upto 14.7V±0.25V. At this stage all intermediate charging status LEDs display
⑩
,
⑪
,
⑫
will turn
on one by one, until LED display
⑬
will turn on. The Trickle current is now available to battery for maintenance.
MODE
BOOST
MODE 5 (13.6V/5A)
a) Maintenance of 12V batteries :
This mode is suitable for maintenance of 12V batteries with a capacity range from
14-230Ah. The charger delivers a constant voltage of 13.6V. This is maintenance mode for applications where maximum
capacity from the battery is required such as Golf Carts, Floor Sweepers etc.
Connect the output terminals of the charger to the battery with right polarity. Connect the power cord to the power outlet
to begin charging.
Press the selection button
⑭
to select Mode 5 (LED 6). After executing this operation the corresponding LED
display
⑥
will light up. If no further process is activated, the electronic system will automatically start the
maintenance charging at constant voltage 13.6V±0.25V with a output current of 5.0A ±10% by indicating
⑥
flashing “on-off” cycle in one second. The charger has overload protection feature in this mode. If output voltage falls
below 4.5V, the charger returns to
⑨
mode.
b) Power Supply :
INVATEC
SC-7 battery charger is also used as a power supply, without attaching a battery in this
mode. The charger delivers 13.6V/5A. In this mode Spark free function is inactivated. However reverse polarity protection
still works.
Press the selection button
⑭
continuously for 3 seconds to select Mode 5 (LED 6). After executing this operation
the corresponding LED display
⑥
and LED display
⑧
will light up simultaneously. If no further process is
activated, the electronic system will automatically begin as a “Power Supply” with output voltage of 13.6V±0.25V and
output current of 5.0A ±10%
MODE
MODE
MODE 6 (16V/1.5A)
To recover severely discharged 12V batteries due to stratified acid with capacity range from 14-230Ah this mode is
applied. A fully charged battery gives faster result. High voltage may cause some water loss. For optimal efficiency,
battery must be disconnected.
Connect the output terminals of the charger to the battery with right polarity. Connect the power cord to the power outlet
to begin charging.
Press the selection button
⑭
to select Mode 6 (LED 7). After executing this operation the corresponding LED
display
⑦
will light up. If no further process is activated, the electronic system will automatically begin boost
function by delivering voltage 16.5V±0.25V with a output current of 1.5A ±20%. This stage is indicated by flashing
⑦
“on-off” cycle in one second. If battery is deep-discharged (4.5V),
⑦
may continue indicate upto 3 hours (max).
Recovery attempt is made at high voltage of 17V (max) at 1.5A. This process would terminate as soon as battery could
accept normal charging and it would be indicated by flashing
⑦
of with frequency of “on” 0.5 second, “off” 1
second.
BOOST
BOOST
BOOST
MODE
