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Kawasaki KZ1300-A1 Quick Reference Manual Page 230

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MAINTENENCE--ELECTRICAL
BATTERY
The battery
supplies
the
current
to the starter motor
and
serves
as a back-up
source
of power to operate the
electrical equipment whenever the engine
is
turning over
too slowly for the
alternator to
supply
sufficient power.
With proper
care, the
battery
can
be expected to
last
several
years
,
but it may be completely ruined
long
before
that if
it is mistreated. Following a few simple
I'ules will greatly extend
the life
of the battery.
1. When the level of the electrolyte in the battery is
low, add only distilled wlter to each cell, until the
level is at the upper level line mlrked on the outside
of the battery. Ordinlry tap water is not I substitute
for distilled water and will shorten the life of the
battery.
2. Never Idd sulphuric acid solution to the blttery.
This will make the electrolyte solution too strong
and will ruin the blttery within I very short time.
3. Avoid quick-charging the battery.
A quick-charge
will damage the battery plates.
4. Never let a good battery stand for more than 30 days
without giving it a supplemental charge, and never
let a discharged battery stand without charging it.
If a battery stands for any length of time, it slowly
self-discharges.
Once it is discherged, the plates
sulphate (turn white), and the battery will no longer
take a charge.
5. Keep the battery well charged during cold weather
so that the electrolyte does not freeze and crack open
the battery.
The more discherged the battery
be-
comes, the more easily it freezes.
6. Always keep the battery vent hose free of obstruc-
tion, and make sure it does not get pinched, crimped,
or melted shut by contact with the hot muffler. If
battery gases cannot escape through this hose, they
will explode the battery.
7. DON'T INSTALL THE BATTERY BACKWARDS.
The negative side is grounded.
Electrolyte
The electrolyte is dilute
sulphuric
acid.
The standard
specific
gravity of the
electrolyte
is 1.280 at 20°C
(68°F).
The
water
in this
solution changes to
a gaseous mixture
due to
chemical action in
the battery
and
escapes,
which
concentrates
the acid in a
charged
battery
.
Conse-
quently, when
the
level of the electrolyte becomes low,
only distilled
water should
be added. If
sulphuric
acid
is
added
,
the
solution will
become too strong
for
proper
chamical action
and
will
damage
the
plates. Metal
from
the damaged plates
collects
in the bottom of the battery
.
This sediment
will
eventually
cause
an internal short
circuit.
The
specific
gravity of
the
electrolyte is measured
with
a hydrometer and is
the
most accurate indication
of the
condition
of the battery. When using
the
hy-
drometer,
read the electrolyte level at the bottom of
the meniscus (curved surface of
the fluid).
Fig. K2
shows
the relationship between the
specific
gravity of
the
solution
at
20°C (68°F)
and the percentage of
battery
charge.
Since
specific
gravity
varies with temper-
ature
,
and
since
the temperature of the
solution
being
checked
is likel
y
to be other than
20°C (68°F);
the
formula given below should be used to compute the
equivalent specific gravity for any temperature. When
the temperature goes up
,
the
specific gravity goes down,
and vice
versa.
oCelsius
S20=St
+
[0.0007
(t-20)
I
oFahrenheit
Ssa=St
+
[0.0004
(t-68)]
St=specific gravity at the present temperature
S2o=specific gravity
at 20°C
S6I=specific gravity at 68°F
t=present
temperature
of solution
Generally speaking,
a
battery should be charged if a
specific gravity reading
shows
it
to
be discharged to 50%
or
less
of
full
charge.
Hydrometer
Read here
Specific Gravity/Battery Cherge Relationship
aD
?;
>
~
<.:)
u
;;:
u
4l
0-
V'l
1.32
1.28
1.24
1.20
1.16
1.12
1.08
1.04
1.00
/
o
/"
/
V
".,
L
V
L
/"
V
\
Full Charge 1.280 (20°C)
20
40
60
80
100
Battery Charge
%
230

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