- Acid-protective grease, such as BOSCH pole grease.
- Steel wire brush for cleaning poles and terminals.
You need to have in stock: distilled water.
Cleaning the battery terminals
During regular inspection of the vehicle, also clean the battery terminals and connecting terminals, and then lubricate them with acid-proof grease.
Checking the electrolyte level
In a serially installed battery, the amount of electrolyte added once is usually sufficient for its entire service life. However, the electrolyte level should be checked regularly.
Warning! Do not make open fire near the battery. Risk of explosion!
The liquid level should be approximately 5 mm above the lead plates, i.e. approximately reach the marking on the outside of the battery. If the level is low, add distilled water to the required level. To do this, unscrew the plugs with a coin or a large screwdriver, and add distilled water to each battery cell separately.
Attention! Use only distilled water for refilling.
Check the battery voltage, see paragraph 20.17.