Product Manual

4. Operation
4.1. Battery charging
After applying mains power and remote shut down is not active, the display will show the following:
All icons of the screen will be visible to check the correct functioning of the display.
• The back lighting of the display is ON.
• Next the firmware version number will be displayed.
• Finally, the actual state is displayed on the screen:
• By using Voltage sensing, the actual battery voltage is shown.
Output Voltage Charge current
Battery charger mode State of charge
When the mains plug is blinking, the mains voltage is below normal and the
charger is reducing the maximum charge current.
• By using Voltage sensing, the actual battery voltage is shown.
4.2. Seven stage charge curve for lead-acid batteries
Figure 3 Voltage and current during different states in battery charging.
4.2.1. Bulk
Entered when the charger is started or when the battery voltage falls below 13.2 V / 26.4 V (due to a heavy load) during at least 1
minute. Constant current is applied until gassing voltage is reached (14.4 V / 18.8 V).
4.2.2. Battery Safe
If absorption voltage is set higher than 14.4 V / 18.8 V, the rate of voltage increase beyond 14.4 V / 18.8 V is limited to 7mV/14mV
per minute, in order to prevent excessive gassing.
Skylla-IP65
Page 11 Operation