89
ELECTROLYTE LEVEL CHECK
In general, detailed informations for service provided by
battery manufacturers are very scarce. As a conservative
rule, electrolyte level must always be above the top of
the lead plates (+/-1 cm - slighlty less than half of an
inch). Electrolyte is a mix of sulfuric acid and water. If
level is decreasing, acid concentration is not supposed
to deplete with evaporation. Water alone must be added,
but it is a good practice to check also the specific gravity
with a hydrometer. Follow these indications :
Unscrew completely the vent plugs and check level with
a flashlight in each and every orifice.
Use a syringe filled with distilled water to top up the
compartment where electrolyte level is too low.
Check gravity in each cell. A reading below 1.215 requires
either charging the battery or to replace it.
If the lead plates are not sulfated and still in good
condition, charging will improve specific gravity.
Specific Gravity
Charge
1.260
100%
1.230
75
%
1.200
50%
1.170
25%
1.140
Very low capacity
1.110
Discharged
NOTE !
Never shake the battery during the process of adding
electrolyte !
If the battery electrolyte level cannot be adjusted
(maintenance free battery type), do not use or charge
the battery if the fluid level is below the lower limit level.
If the battery has been left unattended for an extended
period of time, it is likely that the battery has entered in
a deep discharge process. In such a case, voltage read
would be around 7 Volts or so.
In such a case, it would be very unlikely for the battery to
recover and it is to fear that any charge attempt will fail.
Nevertheless, if a new compatible battery is not available
at the nearest selling store, it is possible to try this
(without any guarantee) :
• Empty the electrolyte,
• Rinse the battery with spring water,
•
Empty the spring water and fill with distilled water,
• Give a several hours charge,
• Empty the water,
• Fill the battery with new electrolyte ready to use,
• Charge the battery.
S08
MAINTENANCE
Summary of Contents for N13.700 CR3 HD
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