One battery is provided with the Gigaset 4000 Micro, while two are provided with the Gigaset 4000 Comfort. The batteries are supplied uncharged. They are charged in the handset. 

Note:    Please observe the safety notes on the back cover. Only use approved batteries (). Gigaset 4000 Comfort: Always replace both batteries at the same time and only use two batteries of the same type/ from the same manufacturer! Open the battery compartment in a dust-free environment only. Your telephone directory entries and all settings remain stored even if you remove the batteries. The date and time settings will be reset.

Opening the battery compartment 

Press down on the ridged surface and slide the cover from the battery compartment. 

Inserting batteries 

Insert the correct battery/batteries. 

Closing the battery compartment 

Put the cover back in place and slide it onto the battery compartment until it engages.