Skil HD529401 Owner's Manual page 91

c. Align the raised ribs of the battery pack with the slot in the
charger.
d. Insert the battery pack into 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), replace a new charger or replace the battery pack, as
required.
Defective Battery Pack
If the charger detects a problem, the red Defect Indicator will begin
flashing. Remove and re-insert the battery pack in the charger. If
the Defect Indicator flashes a second time, try charging a different
battery pack.
a. If a different battery pack charges normally, have the first
defective battery pack serviced by an Authorized SKIL Service
Station.
b. If a different battery pack also indicates "defective," the charger
may be defective. Have the charger serviced by an Authorized
SKIL Service Station.
15