23 Connect the positive lead (+) of the battery charger to the positive terminal (+) of the battery first and then the negative lead (–) to the negative terminal (–). After charging, switch off the battery charger and then disconnect the negative terminal (–) and subsequently the positive terminal (+). For normal charging, the battery leads may remain in place. Fast charging should only be used in an emergency. For "fast charging" both battery leads must be disconnected, otherwise the electronics may become defective. Using electrical components, such as the cab heater or refrigerator when the engine is not running, power will be drawn from the batteries.
Approximately half the battery capacity is required to start the engine. If this is the case over a protracted period, particularly during low temperatures, the result may be that the electrics have used so much power that there is not enough to start the engine. If the larger consumers, such as the cab heater, refrigerator, coffee percolator, microwave oven or tail-lift are used, it is recommended that you obtain batteries of a higher capacity in consultation with your dealer. Thaw out frozen batteries before charging them. Remove all the filler caps before charging. Warnings and Safety Regulations Battery capacity } Charging