4.4.1 Connection of battery charger and battery monitor circuit The battery monitor circuit (05P0607) monitors battery voltage. If battery voltage drops to 22 V, [LOW] indicator comes on and the buzzer sounds. With “BATT CHARGER switch” set to “AUTO”, the charger starts charging the battery when the battery voltage drops to 24.5 to 25.0 V, and stops charging when the battery is charged by 28.0 to 28.5 V automatically. If the switch is set to “MANUAL”, the battery is charged in continuity. The