Before charging, disconnect the positive and ground from the battery, first the ground wire.
Before charging, check the electrolyte level and add distilled water if necessary.
Before charging, the battery must have a temperature of at least 10°C. Allow a frozen battery to thaw before charging. A charged battery freezes at -65°C, a half-charged battery at -30°C, and a discharged battery at -12°C.
Charge the battery only in a well-ventilated area. When charging the battery in the car, keep the hood open.
During normal charging, the charging current is approximately 10% of the capacity. (For a 50 Ah battery - about 5.0 A). Under this condition, the charging time can be taken as 10 hours.
Connect the positive pole of the battery to the positive pole, the negative pole of the battery to the negative pole of the charger.
During charging, the electrolyte temperature should not exceed +55°C, otherwise, interrupt charging or reduce the charging current.
Charge until gases begin to flow freely from all the cans and until, in three consecutive measurements after one hour, the density of the electrolyte and the voltage stop increasing.
After charging, check the electrolyte level and add distilled water if necessary.
The original material is here: www.mitsubishiman.ru
Caution: Do not run the engine with the battery disconnected, as this will damage the electrical equipment.
Fast charging / Jump starting assistance
Fast charging and starting the engine from the cigarette lighter, using a fast charger, can only be done as an exception, since the battery then gives off or receives high currents for a short time. Batteries that have been stored for a long time cannot be charged using a fast charger. Follow the battery storage instructions.