The battery fluid must reach at least the lower mark (there are two of them on the body), but it is good to cover the upper edges of the plates.
If the fluid level has dropped, remove the plug.
If there are difficulties, you need to lift the cap up with a narrow screwdriver. Unscrew the bottom of the cork with pliers.
You can hook a large notch on the corrugation with a screwdriver and turn the upper part of the cork to the left until it stops with a tool, then unscrew the cork.
Pour distilled water into a charged battery up to the upper mark or to a level located at a distance of 15 mm above the upper edges of the plates.
In a heavily discharged battery, it is necessary to fill in such an amount of water that the plates on top are covered. When recharging, the liquid level rises significantly.
Only after charging, additionally pour liquid up to the upper mark.
The amount of water in the filling tank must be precisely dosed, otherwise the accumulator will overflow.
If the battery is overfilled, acid flows out near the plug, resulting in corrosion and acid crystals on the surface of the battery or where the battery sits.
Instruction. The battery should not be filled with acid, but only demineralized (ion exchange) water called distilled. Tap water, rainwater, and boiled water contain electrically conductive salts and other substances that will destroy the battery.
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