PulseTech HD-BT12 Bench Top Charger (746X850) - Manual (Page 7)

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15. FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE. A
SPARK NEAR BATTERY MAY CAUSE 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 negative post is grounded to chassis (as in most vehicles), see
(e). If positive post is grounded to the chassis, see (f).
e) For negative-grounded vehicle, connect POSITIVE (RED) clip from
battery charger to POSITIVE (POS, P, +) ungrounded post of battery.
Connect NEGATIVE (BLACK) clip to vehicle chassis or engine block away
from battery. Do not connect clip to carburetor, fuel lines, or sheet-metal
body parts. Connect to a heavy gage metal part of the frame or engine
block.
f) For positive-grounded vehicle, connect NEGATIVE (BLACK) clip
from battery charger to NEGATIVE (NEG, N, -) ungrounded post of battery.
Connect POSITIVE (RED) clip to vehicle chassis or engine block away from
battery. Do not connect clip to carburetor, fuel lines or sheet-metal body
parts. Connect to a heavy gage metal part of the frame or engine block.
g) When disconnecting charger, turn switch to off, disconnect AC
cord, remove clip from vehicle chassis, and then remove clip from battery
terminal.
16. FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE. A
SPARK NEAR THE BATTERY MAY CAUSE BATTERY EXPLOSION. TO
REDUCE RISK OF A SPARK NEAR BATTERY:
a) Check polarity of battery posts. POSITIVE (POS, P, +) battery
post usually has a larger diameter than NEGATIVE (NEG, N, -) post.