Warning: Never short-circuit the battery - this means that the positive and negative poles must not be connected directly. When short-circuited, the battery heats up and may burst. Do not expose the battery to an open flame. Battery electrolyte is corrosive and must not come into contact with eyes, skin or clothing. If it does, immediately rinse the area where the electrolyte has come into contact with plenty of clean water.
Before charging, disconnect the wires from the battery terminals, first the ground wire.
Before charging, check the electrolyte level and add distilled water if necessary.
Thaw a frozen battery before charging. A charged battery freezes at approximately -65°C, a half-charged battery at approximately -30°C, and a discharged battery at -12°C.
A battery that has been in a discharged state for a long time (deep discharge), when charging it with a regular charger, it may not charge completely or even not charge at all. In this case, you should use an electronic charger, because due to the low charging current, the battery will not heat up as much.
Before charging check battery voltage without load.
- Unscrew the plugs from the battery and place them on the holes. This will prevent electrolyte from splashing onto the varnish when gases are released during charging.
Charge the battery only in a well-ventilated area. When charging the installed battery, the rear door of the car must be open.
During normal charging, the charging current value is approximately 10% of the battery capacity value. (That is, with a battery capacity of 50 Ah, the charging current is approximately 5 A). Then the approximate charging time of the battery can be taken as 10 hours.
Connect the positive pole of the battery to the positive pole of the charger, and the negative pole of the battery to the negative pole of the charger.
During charging, the electrolyte temperature should not exceed +55°C, otherwise, stop charging or reduce the charging current.
- Charge the battery until all its elements actively release gas and until 3 measurements taken at 1-hour intervals show that the electrolyte density and voltage no longer increase.
- After charging, check the electrolyte level and top up with distilled water if necessary.
- Check the density of the electrolyte. If the density of the electrolyte in one or two adjacent elements is noticeably lower (for example, 5 elements show a density of 1.26 g/ml, and in one it is 1.18 g/ml), then the battery is faulty and should be replaced.
- Allow the gases to escape for about 20 minutes, then tighten the caps.
Caution: Do not start the engine with the battery disconnected, as this will damage the electrical system.
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