Charging the battery (Focus Turnier 1)

A dismantled or "hibernating" battery should be charged once a month. In completely discharged batteries, sulfuric acid crystallizes and settles on the walls of the cells. As a result, over time the cells "glass" and become unusable. In addition, discharged batteries freeze at sub-zero temperatures; below -4°C they can even burst. But if they are fully charged, frost is not a problem for them. If the battery to be charged must remain on board for now, disconnect the negative cable (connection to ground) to maintain the charge.

Stages of work

Disconnect the negative wire (connection to ground) from the battery. Connect the charger's positive (red) to the positive pole, the negative wire (black) to the negative pole of the battery.

The charging current should initially be equal to approximately 10% of the battery capacity (e.g. 4.0 A for a 43 Ah battery) and then drop automatically during the charging process.

During charging, tiny gas bubbles consisting of hydrogen and oxygen are formed above the cells. The mixture escapes from the vents or from the central gas outlet into the atmosphere. We are talking about highly explosive detonating gas. Be careful in closed rooms: if a sharp smell hits your nose, then the concentration has become explosive.

Therefore, always ensure that the work area is well ventilated. This is especially true when high charging currents are flowing. The detonating gas can be ignited by sparks generated when connecting and disconnecting the charger or battery cables. Follow safety precautions.