SeaDoo 3D Manual page 189

Section 07 ELECTRICAL SYSTEM
Subsection 02 (CHARGING SYSTEM)
Most hydrometers give a true reading at 21°C
(70°F).
1. Specific gravity 1.265
In order to obtain correct readings, adjust the
initial reading by adding .004 points to the hy-
drometer readings for each 5.5°C (10°F) above
21°C (70°F) and by subtracting .004 point for
every 5.5°C (10°F) below 21°C (70°F).
This chart will be useful to find the correct reading.
ELECTROLYTE
TEMPERATURE
°C °F
38 100
32 90
27 80
21 70
16 60
10 50
4 40
- 1 30
EXAMPLE NO. 1
TEMPERATURE ABOVE 21°C (70°F):
Hydrometer reading: 1.250
Electrolyte temperature: - 1°C (30°F)
Subtract .016 Sp. Gr.
Corrected Sp. Gr. is 1.234
176
OPERATION TO
PERFORM
.012
Add to the
.008
reading
.004
CORRECT READING
.004
Subtract
.008
from the
.012
reading
.016
EXAMPLE NO. 2
TEMPERATURE ABOVE 21°C (70°F):
Hydrometer reading: 1.235
Electrolyte temperature: 38°C (100°F)
Add .012 Sp. Gr.
Corrected Sp. Gr. is 1.247
SPECIFIC GRAVITY READING USING
A HYDROMETER
STATE OF
CHARGE
100%
75%
50%
25%
0%
Load Test
This is the best test of battery condition under a
starting load. Use a load testing device that has
an adjustable load.
Apply a load of 3 times the ampere-hour rating of
the battery. At 14 seconds into the test, check
battery voltage; if battery is in good condition, it
will have at least 10.5 Vdc.
Battery Storage
CAUTION: Battery storage is critical for battery
life. Regularly charging the battery during stor-
age will prevent cell sulfation. Keeping the bat-
tery in vehicle for storage may lead to con-
tacts degradation/corrosion and case damage
if freezing occurs. A discharged battery will
freeze and break in area where freezing point
is experienced. Electrolyte leakage will dam-
age surrounding parts. Always remove battery
from vehicle for storage and regularly charge
to keep an optimal condition.
Disconnect and remove battery from watercraft as
explained in REMOVAL.
Check electrolyte level in each cell, add distilled
water up to upper level line.
CAUTION: Do not overfill.
The battery must always be stored in fully charged
condition. If required, charge until specific gravity
of 1.265 is obtained.
CAUTION: Battery electrolyte temperature
must not exceed 50°C (122°F). The casing
should not feel hot.
Clean battery terminals and cable connections us-
ing a wire brush. Apply a light coat of dielectric
grease (P/N 293 550 004) on terminals.
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ELECTROLYTE TEMPERATURE
27°C (80°F) 4°C (40°F)
1.26/1.27 1.27/1.28
1.21/1.22 1.22/1.23
1.16/1.17 1.17/1.18
1.12/1.13 1.13/1.14
1.10 or less 1.11 or less
smr2005-058