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External start/
stop
The external start/stop option prevents spark formation at the charging plug if it
is disconnected during charging. Special contacts inside the charging plug re-
gister a disconnection from the charging socket. These contacts are leading in
comparison to the main contacts. An immediate charging stop is triggered. There
is therefore no wear on the main contacts and the level of safety against oxyhy-
drogen ignition is increased.
Charging lights Suitable external indicators can be connected to the connections inside the
device, as shown in the figure, to indicate the state of charge or the operating
status of the battery charger. The working voltage of each external indicator
must be 13 V, and the sum of the current drawn by all external indicators must
not exceed 0.5 A.
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