Battery Specification; Dry-Storage Battery - Putting Into Operation; Electrolyte Level Check; Battery Charge Level Check - Vaz 21213 Repair Manual

Fig.7-2. Fuses
Battery
Specification
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . 6ëí-55Ä, maintenance-free
Maximum voltage,volt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maximum capacity (at 20-hour
discharge rate and initial electrolyte
temperature of (27±2)°ë, ampere-hour . . . . . . . . . . . . . . . . . . . . . 55
20-hour discharge amps rate . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.75
Cold start amps rating (with running starter motor
and electrolyte temperature of -18°ë) . . . . . . . . . . . . . . . . . . . . . . 255
Fault diagnosis
Cause
Battery discharge in operation
1. Alternator drivebelt slipping
2. Battery surface dirty
3. Damaged insulation in electrical
equipment system (discharge rate
exceeds 11 mÄ with loads discon-
nected)
4. Too many accessories fitted by
vehicle owner
5. Alternator faulty
6. Electrolyte contaminated
7. Short-circuits between plates
8. Electrolyte level below top plate
edge
Electrolyte on battery cover
1. Too high electrolyte level caus-
ing spillage
2. Electrolyte leaks through frac-
tures in battery case
3. Electrolyte boiling due to
excessive alternator voltage
4. Electrolyte boiling through plate
sulfation
138
Remedy
1. Adjust belt tension
2. Clean battery surface
3. Locate battery leak and remedy
the situation
4. Disconnect new electrical con-
sumers
5. Check alternator
6. Charge battery, drain electrolyte,
flush, fill with new electrolyte and
recharge battery
7. Renew battery
8. Restore electrolyte level
1. Replenish electrolyte as required
2. Replace battery
3. Replace alternator
4. Replace battery

Dry-storage battery - putting into operation

The vehicles are factory-fitted with ready-to-use batteries, i.e.
batteries filled with electrolyte and fully charged.
Replacement batteries can be supplied dry, without elec-
trolyte. In order to operate such battery, first remove any provi-
sional plugs or masking tape. Then using a funnel (made of glass
or acid-resistant plastic), slowly fill the battery with electrolyte (at
3
25°ë) of 1.28 g/cm for normal climates or 1.23 g/cm
All procedures required to activate the battery should be per-
formed at the ambient temperature of (25±10)°ë.
Allow 20 minutes for the internal plates and separators to sat-
urate well in electrolyte. Then check the battery voltage without
loads.
The battery is ready for use when its voltage reading is at
least 12.5 volts. At values below 12.5 volts but over 10.5 volts, the
battery should be recharged to the output voltage which is spec-
ified by the manufacturer. The battery is rejected when the volt-
age is equal or below 10.5 volts.
The saturation of internal plates and separators normally
results in a lower electrolyte level. Therefore, top up the battery
with electrolyte of the original specific gravity before refitting it to
the vehicle.
Always re-charge the battery after it is filled with electrolyte in
the event:
- the battery will be initially operated in heavy duty conditions,
in cold weather, at frequent engine starts, etc.;
- the battery has been stored for over 12 months from the
date of manufacture.
Electrolyte level - checking
Electrolyte level in all battery cells must be maintained
between the «MIN» «MAX» marks on the translucent battery
case. Never try to use the battery with the electrolyte level below
the «MIN» mark.
In the course of vehicle operation the electrolyte level gradu-
ally decreases due to water evaporation. Only distilled water
should be used to top up the battery.
If spillage is suspected to be the cause for low electrolyte
level, always add electrolyte of the same specific gravity as that
remaining in the battery cell. When overfilled, remove excessive
electrolyte using an ebony-tipped rubber bulb.
Battery charge level- checking
Always measure the battery charge with a hydrometer (are-
ometer) during servicing or in the event of the battery failed in
operation. At the same time measure the temperature in order to
account for temperature correlation (Table 7-3) of hydrometer
readings.
3
for tropics.