d22f196b Check of degree of state of charge of the battery

As the acid which is contained in the rechargeable battery is poisonous, be careful during the work with the rechargeable battery.

Acid causes burns of skin and corrosion, do not allow its hit on clothes or details of the car.
In case of hit of acid from the rechargeable battery on skin, in eyes or on clothes immediately wash away it flowing water.
Electrolyte density
Measure electrolyte density by the areometer.
If density is less than norm, charge the rechargeable battery.
The standard density of electrolyte according to indications of the areometer: 1,22–1,29 (at 20 °C).