Victron energy Blue Smart 12/7 Manuel page 6

(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) terminal from the battery charger to the
POSITIVE (POS, P, +) ungrounded post of the battery.
Connect the NEGATIVE (BLACK) terminal to the chassis or
engine block of the vehicle, away from battery. Do not
connect the terminal 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) terminal from the battery charger to the
NEGATIVE (NEG, N, –) ungrounded post of the battery.
Connect the POSITIVE (RED) terminal to the chassis or
engine block of the vehicle, away from the battery. Do not
connect the terminal 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 terminal from the chassis of the vehicle, and
finally remove the terminal from the battery terminal.
h) See "charge alogorithms" for length of charge information.
15. 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) Connect the POSITIVE (RED) charger terminal to the
POSITIVE (POS, P, +) post of the battery.
c) Do not face the battery when making the final connection.
d) 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.
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