14. DC CONNECTION PRECAUTIONS
a) Connect and disconnect the DC output clips only after removing the AC cord from the electric outlet.
Never allow clips to touch each other.
b) Attach clips to battery and chassis as indicated in 14(e), 14(f), 15(b), and 15(d).
15. FOLLOW THE FOLLOWING STEPS WHEN THE BATTERY IS INSTALLED IN A VEHICLE. A SPARK
NEAR THE BATTERY MAY CAUSE A BATTERY EXPLOSION. TO REDUCE RISK OF A SPARK NEAR
BATTERY:
a) Position AC and DC cords to reduce risk of damage by hood, door, or moving engine part.
b) Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
c) Check polarity of battery posts. POSITIVE (POS, P, +) battery post usually has larger diameter than
NEGATIVE (NEG, N,–) post.
d) Determine which post of battery is grounded (connected) to the chassis. If the negative post is grounded to
the chassis (as in most vehicles), see (e). If the positive post is grounded to the chassis, see (f).
e) In case of a negative-grounded vehicle, connect the POSITIVE (RED) clip from the battery charger to the
POSITIVE (POS, P, +) ungrounded post of the battery. Connect the NEGATIVE (BLACK) clip to the chassis
or engine block of the vehicle, away from battery. Do not connect the clip to the carburetor, fuel lines, or
sheet-metal body parts. Connect to a heavy gage metal part of the frame or the engine block. Connect the
AC cord to the socket.
f) In case of a positive-grounded vehicle, connect the NEGATIVE (BLACK) clip from the battery charger to the
NEGATIVE (NEG, N, –) ungrounded post of the battery. Connect the POSITIVE (RED) clip to the chassis or
engine block of the vehicle, away from the battery. Do not connect the clip to the carburetor, fuel lines, or
sheet-metal body parts. Connect to a heavy gage metal part of the frame or the engine block. Connect the
AC cord to the socket.
g) When disconnecting the charger, disconnect the AC cord, remove the clip from the chassis of the vehicle,
and finally remove the clip from the battery terminal.
h) See “charge alogorithms” for length of charge information.
16. FOLLOW THESE STEPS WHEN THE BATTERY IS OUTSIDE OF THE VEHICLE. A SPARK NEAR THE
BATTERY MAY CAUSE BATTERY EXPLOSION. TO REDUCE RISK OF A SPARK NEAR THE BATTERY:
a) Check the polarity of the battery posts. The POSITIVE (POS, P, +) battery post usually has a larger diameter
than the NEGATIVE (NEG, N, –) post.
b) Attach at least a 24-inch-long 6-gauge (AWG) insulated battery cable to NEGATIVE
c) (NEG, N, –) battery post.
d) Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P, +) post of the battery.
e) Do not face the battery when making the final connection.
f) When disconnecting the charger, always do so in reverse sequence of the connecting procedure and break
the first connection while as far away from battery as practical.
g) A marine (boat) battery must be removed and charged on shore. To charge it on board requires equipment
specially designed for marine use.
