4.5.15. Service of the rechargeable battery

At least once in two weeks delete with dry rags dust and dirt from a surface of a monoblock and its cover. If on a cover incidentally there was an electrolyte, remove it with the pure rags moistened with water solution of soda. Then dry wipe a cover surface.

Prevention
In order to avoid pollution of electrolyte clear a cover surface only at densely wrapped up traffic jams.

You watch that traffic jams were always densely screwed in mouths of cans. At least once in 2 weeks check purity of openings for gas discharge in traffic jams (if they in them are executed) or in cover sidewalls. The contamination of these openings will cause increase in pressure of gas in the battery that can lead to its damage.
For prevention of oxidation of plugs of the battery and tips of wires regularly clear plugs and tips (the requirement of manufacturer — each 30 thousand km), grease them with technical vaseline or jellied lubricant. You watch density of connection of tips of wires and conclusions.

Good advice
Instead of technical vaseline or usual jellied lubricants it is the best of all to apply the conducting copper-bearing lubricants which are available on sale to protection of conclusions and tips against oxidation.

Periodically check reliability of fastening of the battery on the car, if necessary bring up him in order to avoid emergence of cracks on a monoblock.

Good advice
For reduction of the vibrations which are transferred to a battery monoblock install the battery on a rug from acidproof rubber.

If the battery served, then periodically (the requirement of manufacturer — each 15 thousand km) check electrolyte level in battery elements.

Note
At batteries with the cover, general for all elements, equipped with a condenser cavity it is allowed to check electrolyte level once in 2 months.

Electrolyte level in all elements has to be 5-10 mm higher than the top edge of separators that corresponds to a level arrangement between tags of "MIN" and "MAX" on a wall of the translucent case of batteries of other producers.

Good advice
To check electrolyte level over the top edge of separators conveniently glass tubule with a diameter of 4-5 mm. Lower it in an element against the stop in a separator and, having closed the free end of a tubule a finger, take out from an element.

For restoration of level of electrolyte add only the distilled water. If it is precisely established that slopping is the reason of low level, then add electrolyte of the same density, as remained in a battery element. If level is higher than norm, pump out electrolyte a rubber pear with an ebonite tip.

Prevention
It is strictly forbidden to add in the rechargeable battery the concentrated acid!

If in use there were problems with launch of the engine, check density of electrolyte of the rechargeable battery or tension on its plugs in not loaded state. For check of density of electrolyte use the areometer or the float-operated indicator of density of electrolyte which can be got in autoshop. The electrolyte density corresponding to degree of state of charge of the battery is specified in tab. 4.3. Tension on plugs of the battery can be measured by any voltmeter of a direct current with a limit of measurement of 20 V (the similar voltmeter is a part of all autotesters or multimeters which are available on sale).

Table 4.3 Parameters for check of degree of state of charge of the rechargeable battery