Dacia 1304 2004, Repair Manual

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80
BATTERY - FRONT HEADLIGHTS
80 - 3
E
LECTROLYTE Q UANTITY OF
DENSITY
[ g/cm
3
]
SULFURIC ACID
[ cm
3
]
1,23 290
1,25 328
1,27 368
1,29 412
To prepare electrolyte of a certain density, for each liter of distilled water, add a quantity
of sulfuric acid as per a.m. table.
BATTERY CHARGING
The batteries are charged in special rooms, well ventilated, where the working
temperature shall be of
20 – 25° C.
The dry-discharged batteries
shall be filled with electrolyte with 1,26 g/cm≈ density
at a temperature of
15 – 25 °C
until the level of the electrolyte is
10 – 15 mm
over the
upper edge of the separators; after a
2 – 3 hours
pause, during which the electrolyte
penetrates the plates, check again the level, and refill with electrolyte of same concentration.
The battery prepared in this way, shall be charged by a continuous current source
(rectifier), which will be connected with the ( + ) terminal at the ( = ) terminal of the battery
and the ( - ) terminal at the ( - ) terminal of the battery.The charging shall be performed
only when the electrolyte temperature is not higher than 30°C, and the battery will be
immersed in a cooling vessel, with the level at 2/3 from the battery height.
The battery charging is performed in two stages, the battery without plugs, as follows:
- stage I -
adjust the charging current
( I
I
) to 10 %
of the battery nominal capacity
( I
I
= C n / 10 ) - and shall be maintained at a constant value until the voltage per element
reaches
2,4 V
. The temperature of electrolyte shall not be over
30° C
; in this case the
charging shall be stopped in first stage
I
and follows the charging in second stage
II.
- stage II -
adjust the charging current
( I
II
) to 5 %
of the battery nominal capacity
( I
II
= C n / 20 )
and shall be maintained until the end of charging, when can be notice an
active gas emission from all elements, the electrolyte density increases to 1,28 c / cm≈ and
the voltage reaches at 2,6 – 2,75 V / element, these values being necessary to remain
constant during 3 hours, in case of a good battery.
BATTERY
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