Periodic checking and restoration of electrolyte levels.
Checking the condition of the battery case by inspection.
Battery cleaning, corrosion removal (white deposits) on the battery mounting parts and terminals (photo) with an aqueous solution of soda ash.
Checking the reliability of the terminal fastening on the poles.
Checking the battery charge with a hydrometer. Maintenance-free batteries have a built-in color indicator. A blue spot in the indicator window indicates that the battery is fully charged; when the indicator becomes discolored, the battery should be charged.
8.6 Tightening the battery terminal
7.4b If air does not pass through the valve, locate the leak by spraying the tire with a soap solution
7.8 Checking tire pressure using a pressure gauge
The normal specific gravity of the electrolyte at 27°C is 1.27 (with a correction of ±0.04 for every ±10 change in temperature°).
The battery is considered partially charged if the specific gravity of the electrolyte at 27°C is 1.240.
The battery is charged with a current of 4-6A. Charging stops 3-4 hours after the voltage on the battery stops increasing.
8.7a Battery pole corrosion
8.7b Removing the terminal from the battery
[The material is taken from a web resource: NISSANBOOK.RU]
8.7v Clean the battery terminal until the surface is shiny
8.7g The terminal should also be thoroughly cleaned without removing excess material