Electrical system
46
Battery charging
IMPORTANT! Always connect the battery
charger directly to the battery positive (+) and
negative (–) poles.
When a battery charger is used in a 2 V system, the
battery voltage rises quickly to around 2.9 V, and
then rises slowly to 3.8–4.4 V when gas starts to
form. The charge current should be reduced by the
charger when gas starts to appear. Charging at a
high rate and intensive gassing results in the follow-
ing:
• The life of the battery is reduced
• The capacity is reduced
• There is a risk of a short circuit in the battery
• There is a risk of explosion
The following parameters determine the duration of
the charge period:
• The state of discharge when charging is com-
menced.
• The capacity of the charger (how much current
can be supplied from the charger).
• The size of the battery (capacity in Ah).
• The temperature of the battery. Longer charging is
required if the battery is cold. The battery cannot
absorb a high charge current at low temperature.
It is better to charge at 0 A for 5 hours than 50 A for
hour even if the total charge is 50 Ah in both cases.
The battery has difficulty in absorbing a high current.
NOTE! A moderate amount of gas is normal. Towards
the end of charging, the voltage rises quickly to
5–6 V. This value is not exceeded even if charging
is continued.
Risk of explosion
Gas is formed in the battery during charging. A short
circuit, naked flames or sparks in the vicinity of the
battery can cause a powerful explosion. Ensure
proper ventilation, especially if the battery is charged
in a closed area.
WARNING! Always disconnect the charge cur-
rent before removing the cable clamps.
Relationship between AWG, inch, mm and mm
2
Extra alternators
For information about extra alternators see
Sales
Guide Marine Propulsion Diesel Engines and the
Power take-off chapter in this publication.
EVC–Electronic Vessel Control
For in formation about how to install the EVC system
see manual
Installation, Electronic Vessel Control
EVC.
AWG
Diameter
Area
No
inches mm
mm
2
22
0,0253 0,6438
0,3255
2
0,0285 0,7229
0,404
20
0,032 0,88
0,576
9
0,036 0,96
0,6527
8
0,04
,024
0,823
7
0,045 ,5
,039
6
0,05 ,29
,309
5
0,057 ,45
,65
4
0,064 ,628
2,082
3
0,072 ,828
2,624
2
0,08 2,053
3,3
0,09 2,305
4,73
0
0,02 2,588
5,26
9
0,4 2,906
6,633
8
0,29 3,264
8,367
7
0,44 3,665
0,54
6
0,62 4,5
3,3
5
0,82 4,62
6,77
4
0,204 5,89
2,5
3
0,229 5,827
26,67
2
0,258 6,544
33,63
0,289 7,348
42,4
0
0,325 8,25
53,47
2/0
0,365 9,266
67,43
3/0
0,4
0,4
84,95
4/0
0,46
,68
07,2
Содержание D11 series
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