Battery Charging Equipment; Installation Of Battery - BOMBARDIER ski-doo Tundra Scandic 2004 Series Shop Manual

Charging a Very Flat or Completely
Discharged Battery
Unless this procedure is properly followed, a good
battery may be needlessly replaced.
– Measure the voltage at the battery posts with
an accurate voltmeter. If it is below 10 volts, the
battery will accept current at very low rate, in
term of milliamperes, because electrolyte is
nearly pure water as explained above. It could
be some time before the charging rate increas-
es. Such low current flow may not be detect-
able on some charger ammeters and the bat-
tery will seem not to accept any charge.
– Only for this particular case, set the charger to
a high rate.
NOTE: Some chargers have a polarity protection
feature which prevents charging unless the charg-
er leads are connected to the correct battery ter-
minals. A completely discharged battery may not
have enough voltage to activate this circuitry, even
though the leads are connected properly. This will
make it appear that the battery will not accept a
charge. Follow the charger manufacturer's instruc-
tion telling how to bypass or override this circuitry
so that the charger will turn on and charge a low-
voltage battery.
– Since the battery chargers vary in the amount
of voltage and current they provide, the time
required for the battery to accept measurable
charger current might be up to approximately
10 hours or more.
– If the charging current is not up to a measurable
amount at the end of about 10 hours, the bat-
tery should be replaced.
– If the charging current is measurable before the
end or at the end of about 10 hours, the battery
is good and charging should be completed in
the normal manner as specified in Activation of
a new battery.
– It is recommended that any battery recharged
by this procedure be load tested prior to return-
ing it to service.
BATTERY CHARGING
EQUIPMENT
The battery charger should have an adjustable
charging rate. Variable adjustment is preferred,
but a unit which can be adjusted in small incre-
ments is acceptable.
MMR2004-132_06_04A.FM
Section 06 ELECTRICAL
Subsection 04 (BATTERY)
The battery charger must be equipped with an am-
meter capable of accurately measuring current of
less than one ampere.
If the present charger is not adjustable to the prop-
er current values, a rheostat can be connected in
series with the battery to provide adjustment. 12
ohm, 50 watt rheostat, such as OHMITE — 0314
or MALLORY 50K 12P, are available from electron-
ic parts supply shops and they are suitable for use
with most chargers if the peak current is to be held
below 2 A.
If you need an accurate ammeter, we recommend
the use of: SHURITE — 5202 (0 to 3 A) or — 5203
(0 to 5 A) available from electronic parts supply
shops.
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3
A00E0DA
1. Charger
2. Rheostat 12 Ω 50 W
3. Ammeter
4. Battery
For a service application and a permanent installa-
tion, both ammeter and rheostat can be built into
a small box adjacent to your charger.
CAUTION: Adequate ventilation MUST be pro-
vided to cool the rheostat.

INSTALLATION OF BATTERY

All Models
Ensure vent tube is properly installed on battery el-
bow.
Connect vent tube to vehicle fitting on front frame.
Route RED positive cable behind retaining strip
and connect it to positive battery terminal. Con-
nect RED wire (coming from ignition switch).
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06-04-7