ProCharger compact Bedienungsanleitung Seite 44

Charging
The battery is first charged at a constant current (I-phase) until the
end-of-charge voltage (14.3V) is reached.
The voltage is then held constant (V1-phase) and the charging current
adapts to the level of charge in the battery.
The fuller the battery, the lower the charging current.
If the charging current falls below about 100mA (see Note N3 on
P. 45), the charging process is halted and the charger switches
automatically into test mode.
The test draws a defined load current from the battery.
If the voltage of the loaded battery falls back to its rated value, this
indicates a high internal resistance or a high level of sulphation.
If the battery does not pass this test the charger considers it „faulty".
The device switches itself off, and the „Fault" („Defekt") and „Done"
(„Fertig") LEDs flash. If all the test criteria are satisfied after charging
and the battery is found to be „Healthy", the charger switches the
„Done" („Fertig") LED on and enters maintenance mode. At the same
time, the „Charge" („Laden") LED goes out, and the „Desulphation"
(„Entsulfatierung") LED is turned on. This means that the battery is
charged and ready to operate, and it can be disconnected from the
charger. If, however, the battery remains connected to the charger,
the program will discharge the battery for a period of 15 minutes
with a current of about 30 mA. After 15 minutes, or after the battery
voltage has fallen below the rated value (12V), trickle charging will
be started. The „Desulphation" LED („Entsulfatierung") will be swit-
ched off at this point, and the „Charge" LED („Laden") switched on.
The program then applies trickle charging for a period of 15 minutes.
The charging current is now adjusted so that the battery
voltage is automatically maintained at 13.8V. After 15 minutes, the
„Desulphation" program („Entsulfatierung") starts again. This cycle is
repeated until the charger is disconnected from the battery.
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