Schumacher Automatic SP1 - Manual (Page 11)

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NOTE: This charger is equipped with an auto-start feature. Current
will not be supplied to the battery clips until a battery is properly
connected. Meaning, the clips will not spark if touched together.
Using The Quick-disconnect Cable Connectors
Connect any of the three output cable assemblies to the charger.
Make sure to place the charger on a dry, non-flammable surface like
metal or concrete.
NOTE: Never connect the clamp and ring terminal connectors
together for use in other applications, such as external battery or
other power source charging, or to extend the output cable length, as
reverse polarity and/or overcharge conditions will occur.
50 Amp Battery Clips
Connect the end of the charger output cable to the end of the 1.
50 Amp Battery clips cable.
Follow the steps in sections 6 and 7 to connect the output clips
2.
to the battery.
After a good electrical connection is made to the battery, plug
3.
the power cord into a grounded 120V AC electrical wall outlet.
Permanent Ring Connectors
To permanently attach to a battery, loosen and remove each nut 1.
from the bolt at the battery terminal.
Connect the red POSITIVE connector ring to the POSITIVE
2.
battery terminal.
Connect the black NEGATIVE connector ring to the NEGATIVE
3.
battery terminal.
Replace and tighten the nuts to secure.
4.
Connect the cable to the end of the charger output cord. Take 5.
care to keep the wires and plug away from metal and moving
parts.
Plug the charger power cord into a grounded 120V AC electrical
6.
wall outlet.
12V Accessory Plug
Connect the end of the 12V Accessory Plug Cable Quick- 1.
Connect to the charger.