Dometic MCP1204 Bedienungsanleitung Seite 15

PerfectCharge MCP1204/1207 Technical description
6.3 Battery charging function
The battery charger operates in eight phases (fig. 3, page 4).
1: Desulphation
Sulphated batteries are revived in the desulphation phase. The current and voltage
pulse, so that sulphate is decomposed into its amorphous structure. The battery
capacity is restored.
2: Soft start
The charging capability of the battery is tested using the power consumption in the
soft-start phase. When the battery is defective, the charging process is aborted.
3: I phase (bulk)
The empty battery is charged with constant current (100 % charge current). As soon
as the battery voltage has reached the charge voltage, the charge current decreases.
4: U0 phase (absorption)
The voltage remains constant during the U0 phase (U0). Once the battery is com-
pletely charged, the U0 phase has finished.
5: Analysis
The float charge of the battery is checked in the analysis phase. If the voltage drops
too quickly, the battery can not retain the charge and must be replaced.
6: Reconditioning
The voltage is increased again in the reconditioning phase in order to generate
controlled gas formation in the battery. This gas formation prevent acid stratification
(different concentrations of acid in the battery cells).
7: U phase (float)
The battery switches to float charging in the U phase. The battery voltage is retained
at 100 %.
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