Issue 1.03-8 Installation3. Replace the cover and slide it up until it latches onto the handset.SECTION 8 C HARGING B ATTERIES8.1 Charging the Handset BatteriesThe rechargeable batteries must be fully charged before using the handset for thefirst time.1. Place the handset in the charging unit.2. Make sure the Handset Charging LED indicator lights. If the HandsetCharging LED does not come on, check to see if the AC adapter isplugged in and that the handset is making good contact with thecharging contacts on the charging unit.Figure 3-9 Replacing the Battery CoverIMPORTANTCharge the batteries without interruption for at least 10 hours.NOTE The Handset Charging LED turns blue during and after charging thehandset with the battery.Figure 3-10 Handset Charging LED IndicatorHandset ChargingLED Indicator