ELECTRICAL AND ECU
Battery Components and Functions
12/05
6LY3 Service Manual
12-7
© 2007 Yanmar Marine International
Precautions for Battery Storage
The life of a battery depends on the way it is
handled. After about 2 years its performance will
deteriorate and replacement will be necessary.
A battery will discharge about 0.5% per day when
not in use. It must be charged one to two times a
month while in storage.
Figure 12-9
Figure 12-9
If charging with the engine alternator is insufficient
because of frequent starts and stops, the battery
will rapidly lose power. Charge the battery as soon
as possible when it is used under these conditions.
An easy-to-use battery charger is available from
Yanmar. Take proper care of the battery by using a
battery charger
(Figure 12-10, (1))
and
hydrometer.
Figure 12-10
Figure 12-10
1 – Battery Charger
When the specific gravity drops to about 1.16,
charge the battery up to a specific gravity of 1.26
(24 hours).
Before putting the battery in storage for long
periods, charge it for about 8 hours.
Di
s
ch
a
rge P
er D
a
y (
%
)
N
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m
b
er of D
a
y
s
After Ch
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0006
3
5
3
(1)
0006269
