MVK 11 / 02
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Jede Verfügungsbefugnis wie Kopieren und Weitergaberecht liegt bei FEIN
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FEIN - Repair - Tool
8.3. ALG 20 - Battery charger
(! Excerpt from the Battery charger ALG 20 operating instructions!)
Notes
Among other things the charging process is controlled by a temperature sensor in the battery. The
charging process has been harmonized to the respective cell type of the battery (NiCd/NiMH) by
special coding.
The temperature sensor in the battery ensures that no quick charge is carried out at temperatures
of the battery of below 5 Celsius and over +40 Celsius.
If the battery reached an overtemperature during the previous discharging process or if it has been
stored too cold (red flashing LED), the quick charge system starts up automatically as soon as the
battery temperature is within the charging temperature range.
Given an extreme total discharge, the charging process may be delayed by several minutes after
pushing on the battery (red flashing LED).
If the battery is not charged despite normal temperature, it has to be considered safe that the
battery is defective.
When the battery is fully charged, the charger will switch from quick charge to float charge
automatically, and the green LED is lit. Repeated placement of the charged battery will lead to
overcharging, has a negative effect on the service life, and thus has to be avoided.
New unformatted batteries and/or totally discharged batteries which have to be formatted reach
their full capacity after 3 to 5 charging / discharging cycles.
Depending on the battery capacity the charging time of the FEIN battery charger ALG 20 is between
20 and 60 minutes.
If the battery decreases in capacity within a short period of time despite correct charging, the end
of its service life is reached.