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Cobra 427 - Lucas 12 Volt Battery; Battery General Information; Taking Hydrometer Readings

Cobra 427
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LUCAS 12 VOLT BATTERY
TYPE FRT.9A
(
GENERAL INFORMATION -THE BATTERY
Occasionally check the condition of the battery by taking hydrometer
readings of the specific gravity of the electrolyte in each of the cells. Read-
ings should not be taken immediately after "topping-up" the cells. The
specific gravity readings and their indications are as follows:
1·280 - 1·300. Battery fully charged.
About 1·2\
O.
Battery about half discharged.
Below \·\50. Battery fully discharged.
These figures are given assuming the temperature of the solution is
about 60°F.
HOLD TUBE
VERTICALLY
DO NOT DRAW
IN roo MUCH
/ ELECTROLYTE
fLOAT MUST
BE fREE
TAKING HYDROMETER READINGS
The readings for all cells should be approximately the same. If one
cell gives a reading very different from the rest, it may be that acid has
been spilled or has leaked from this particular cell or there may be a short
circuit between the plates. In this case the battery should be examined
by a Service Depot or Agent.
(
EVERY 1,000 MILES, OR MONTHLY
BATTERY. Remove the filler plugs from each of the cells of the
battery and, if necessary, add sufficient distilled water to bring the electro-
lyte level with the tops of the separators, thereby replacing water which
has been lose by evaporation. A Lucas Battery Filler will be found useful
for topping-up. This ensures that the correct level is automatically
obtained and also prevents distilled water from being spilled on top of the
battery. Its use is particularly recommended on cars where visual examin-
ation of the electrolyte level is difficult. Do not use tap water. Never use
a naked light when examining the conditions of the cells and never over-fill
the cells when topping-up.
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