Caution: Running the engine with the battery disconnected is not permitted, as this will damage the vehicle's electrical system.
Safety instructions: Never short-circuit the battery, which means that the positive (+) and negative (-) poles are not connected directly. If short-circuited, the battery will heat 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.
The battery can be charged without removing it from the vehicle, however, before charging, the ground (-) wire and the positive (+) wire must be disconnected from the battery terminals.
Attention: This will erase the "operating parameters" from the memory of the electronic control unit of the injection system, and the anti-theft code and tuned radio stations from the memory of the radio. Therefore, before disconnecting the battery, be sure to read the instructions in the chapter "Removal and installation the battery".
Before charging, check the electrolyte level and add distilled water if necessary.
Thaw a frozen battery before charging. A charged battery freezes at a temperature of approximately -65°C, a half-discharged battery at approximately -30°C, and a discharged battery at -12°C.
* Unscrew the plugs from the battery or press them with a narrow screwdriver and place them on the holes. This prevents electrolyte from splashing onto the varnish when gases are released during charging.
The battery is charged only in a well-ventilated area. When charging the installed battery, the engine compartment hood must be open.
Connect the positive terminal of the battery (+) to the positive terminal of the charger, and the negative terminal of the battery (-) to the negative terminal of the charger.
During charging, the electrolyte temperature should not exceed +55°C, otherwise, stop charging or reduce the charging current.
If the battery has been in a discharged state for too long, it may not charge completely or at all. In this case, the battery should be charged with a very weak current for a longer period of time, and finally, the density of the electrolyte should be checked.
* During normal charging, the charging current is approximately 10% of the battery capacity (That is, with a battery capacity of 50 Ah, the charging current is approximately 5 A). The estimated charging time is 10 hours.
* Charge the battery until all its elements actively release gas and until three measurements taken at intervals of 1 hour show that the density of the electrolyte and the 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 element 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 or press the caps.