Lucent Technologies Round Cell Batteries
Issue 3 December 1999 Installation 6 - 15
Specific Gravity Readings
Procedure
Caution
When taking specific gravity readings, cover the bottom of the tube on
the hydrometer with a paper towel while moving it from cell to cell to
avoid splashing or throwing the electrolyte.
Specific Gravity Reading
Step Action
1
Insert the hydrometer tube into the cell through the vent funnel.
Note: Be sure that the top of the hydrometer float does not
touch the stop in the hydrometer bulb since this would cause
an erroneous reading.
2
Slowly fill and empty the hydrometer a few times before
recording readings in order to wet the float, mix the electrolyte,
and equalize the temperature of the hydrometer and the
electrolyte.
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