BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual

Page: 312 / 427

Section 06 ELECTRICAL
Subsection 04 (BATTERY)
MMR2004-132_06_04A.FM
06-04-3
EXAMPLE NO. 1
Temperature below 25°C (77°F):
Hydrometer Reading: 1.250
Electrolyte temperature:
-
7°C (20°F)
Subtract .019 Sp. Gr.
Corrected Sp. Gr. is 1.231
EXAMPLE NO. 2
Temperature above 25°C (77°F):
Hydrometer Reading: 1.235
Electrolyte temperature: 38°C (100°F)
Add .008 Sp. Gr.
Corrected Sp. Gr. is 1.243
CAUTION: Do not install a partially charged bat-
tery on a snowmobile since the casing might
crack at freezing temperature. The following
chart shows the freezing point of the electrolyte
in relation to the temperature corrected specific
gravity.
Voltmeter Test
Skandic WT/SWT/SUV 550/SUV 600
The sealed and maintenance free battery has to
be tested with a voltmeter.
Battery testing requires a voltmeter that can mea-
sure DC voltage. Connect a voltmeter parallel to
the circuit being tested, observing polarity; other-
wise, wrong voltmeter reading will appear.
There are two types of battery tests: unload and
load.
An unload test is made on a battery without dis-
charging current. It is the simplest and most com-
monly used method.
An load test is more accurate.
Unload Test
Skandic WT/SWT/SUV 550/SUV 600
Check charge condition by using voltmeter. Volt-
meter readings appear instantly to show the state
of charge.
Load Test
All Models
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 bat-
tery voltage; if battery is in good condition, it will
have at least 10.5 Vdc.
BATTERY STORAGE
Skandic LT E
Disconnect and remove battery from the vehicle.
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) or petroleum jelly on ter-
minals.
TEMPERATURE
CORRECTED SPECIFIC
GRAVITY
BATTERY
CHARGE
1.265
1.215
1.165
1.125
1.110 Fully charged
3 /4 charged
1 /2 charged
1 /4 charged
Discharged
TEMPERATURE
CORRECTED SPECIFIC
GRAVITY
FREEZING POINT
OF ELECTROLYTE
1.265
1.225
1.200
1.150
1.110 - 59°C
- 37°C
- 27°C
- 15°C
- 3°C
(- 75°F)
(- 35°F)
(- 17°F)
(+ 5°F)
(+ 27°F)

WARNING
Connect the positive lead to the battery‘s pos-
itive terminal, and the negative lead to the
negative terminal.
STATE OF CHARGE VOLTAGE READING
100%
75% - 100%
50% - 75%
25% - 50%
0% - 25%
12.8 - 13.0 V
12.5 - 12.8 V
12.0 - 12.5 V
11.5 - 12.0 V
11.5 V or less