Victron energy Blue Smart IP65 Manuel page 6

14. 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.
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