Panasonic NEXTIVA KT-TGP 600 User Manual page 6

At the time of shipment, the batteries are not charged. You will need to charge the batteries for about 6
hours before using the handset for the first time (Figure 1-5).

The charge indicator will turn off when the batteries are fully charged.

It is normal for the handset and charger to feel warm while the batteries are charging.
Figure 1-5: Handset and Charging Cradle
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