5. Charging
The battery charger is now in the Standby operating mode and the “SLOW”, “STD” and
“POWER” LEDs are illuminated. This is the standard charging mode and as soon as the
START button is pressed, the charger switches immediately into the 12V, 3A RMS,
STANDARD battery charging mode.
If you require an alternative selection, proceed as follows:
Step 1 – Select the desired charge current: “SLOW” (3A
RMS) or “FAST” (9A RMS).
Step 2 – Select the battery type: “STD” or “DEEP”.
STD indicates a common lead acid battery, calcium
battery, Maintenance Free battery, e.g. Gel Cell, VRLA,
AGM & etc.
DEEP stands for Deep Cycle batteries.
Step 3 – Press the “START” button to begin charging the battery.
Battery Fault – A few seconds after switching on to the operating mode, the LED indicator
“FAULT” will illuminate if the following occurs:
A. Low battery voltage - < 3 V
B. High battery voltage - > 15 V (12 V battery)
C. Battery short circuit or battery cell short circuit
Under these conditions, the battery charger will stop charging. In the event of A, B or C, the
battery may be defective and we advise you to consult your nearest battery service centre.
When the LED “FULL” illuminates, the battery is completely charged. The battery charger
now switches to the Float mode and doesn’t require your attention until the next time it is
used. The DFC900N battery charger will automatically maintain your battery.
6. When charging is complete
Switch off the mains supply, unplug the charger, and disconnect the leads from the battery
posts. Inspect the liquid levels in each cell and top up. If necessary, using the correct fluid.
Replace the caps. Any surplus fluid around the cell tops should be wiped off (this should be
done with extreme care as it may be acidic/corrosive).
Where appropriate, if the battery has been removed for charging, replace it and reconnect
the cables.
It is essential to keep your battery regularly charged throughout the year, especially during
the winter months. In the winter the effectiveness of your car battery is reduced by the cold.
Oil is thick. Engines are difficult to start and the heater, windscreen wipers and lights are all
draining power. It is at this time that batteries have to be at peak power. If your battery is
not regularly maintained and kept fully charged, it can cause problems and a possible
breakdown.
Listed are some helpful hints on how to keep your battery healthy in conjunction with your
Battery Charger.
Faulty Cells
Batteries are usually made with six cells. One of these cells can deteriorate or get damaged.
If, after several hours charging your battery is still flat, you should test the battery. Take
hydrometer readings from each cell in the battery. If one reading is lower than the others,
this could indicate a faulty cell. If necessary, get an Auto-Electrician to check your battery.
One faulty cell is enough to ruin your battery.
