Skil BY519901 Guide D'utilisation page 15

d. Insert the battery pack onto the charger (Fig. 2).
e. The charger will communicate with the battery pack to evaluate
the condition of the battery pack.
f. The charger will charge the battery automatically.
Please refer to the charger manual for detailed charging operation.
NOTICE: If the battery pack cannot accept a charge, the contacts
of the charger or battery pack may be contaminated. Clean the
contacts of the charger or battery pack (e. g. by inserting and
removing the battery several times or scrubbing with a cotton swab
and alcohol), or replace the battery pack, as required.
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