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16.8. Rechargeable battery

On cars the lead starter rechargeable battery 6ST-55P or its analogs is installed.

The battery consists of six consistently connected accumulators placed in separate compartments of the general case (positive and negative lead plates are divided by separators). Compartments are filled with electrolyte – solution of sulfuric acid in the distilled water, with a density of 1,27-1,28 g/cm3.

Technical characteristic

Rated voltage, In

12
Capacity at the 20-hour category and temperature of electrolyte of 25 °C, Ah
55
Volume of electrolyte, l
3,6
Charge current, And
5,5

The case of the rechargeable battery is manufactured of translucent plastic with marks of admissible level of electrolyte.

Maintenance of the rechargeable battery consists in check of level and density of electrolyte. If the level of electrolyte is badly visible – we are guided on the lower edge of a jellied opening.

We measure density by the areometer. Having added water, consider that so far water completely will not mix up with electrolyte, indications of the areometer will be underestimated.

Degree of state of charge of the rechargeable battery can indirectly be determined by tension on its plugs (see the table).

Tension of the rechargeable battery, In

Degree of state of charge, %
12,6
100
12,0
75
11,6
50
11,3
25
10,5
0

We wipe the external surfaces of the battery with the rags moistened with solution of baking soda.

During the work with the rechargeable battery strictly follow safety regulations. Systematically check reliability of fastening of plugs on battery conclusions.