Innovative switching technology for the best charging performance in the smallest housing. You can select the charging current in two steps, 5 or 10 A, depending on the battery capacity. The charger switches off automatically when the charge-end voltage of 13.8 V is reached. When the battery voltage falls to a preset level, it is automatically charged again to the charge-end voltage of 13.8 V. This ensures that your battery is always full and that its life is extended. The battery may be left connected to the charger permanently. The charging status is indicated by three LEDs. ....(continued here)