Waeco PerfectCharge MCA1215 Handbuch Seite 48

Technical description MCA1215 – MCA2440
6.3 Battery charging function
The charging characteristics are referred to as modified IU0U characteristics.
U/V
1 2 3 4 5 6
I/A
U
I U0 U
100 %
I
6 %
t
1: I phase (bulk)
At the beginning of the charging process, the flat battery is charged with a
constant current (100% charge current) until the battery voltage reaches the
charging voltage. The charging current decreases when the battery has
reached this charging level.
2, 3, 4: U0 phase (absorption)
Now the three-stage absorption charging process (U0 phase) begins, where
the duration depends on the battery. The voltage remains constant (U0). In
the first 2 minutes, the charging of the battery is determined. Then the main
charging phase begins when the battery is fully charged.
Once the battery is completely charged, or the charging current is below 6 %
of the rated charging current for 15 minutes, the U0 phase has finished.
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EN