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8 | Function description
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Step 1 "Analysis": An analysis is performed to determine whether
a battery is connected and the battery voltage is within the valid
range.
Step 2 "Check": The connected battery is checked for deep
discharge.
Step 3 "Recovery": Depending on the battery charge level and the
necessity, the battery is pre-charged (if the battery voltage is lower
than 4 V). This process can take up to 24 hour.
Step 4 "I-phase (charge voltage adjustment)": The battery is
charged at a constant current (I-phase) until 14 volts is reached.
Step 5 "U-phase (charge current adjustment)": The battery voltage
is held constant and the charging current adapts to the charge level
in the battery. The fuller the battery, the lower the charging current.
Step 6 "Test": 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 that the battery has a high internal resistance
or low residual capacity.
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