Charging the battery pack (For HC-4500 users)
Turn off the unit.
You cannot charge the installed battery pack while the unit is turned on.
2. Plug the supplied AC adaptor into an AC outlet, and then connect the AC
adaptor plug to your unit. Your unit should now start charging and the
Notification indicator on the unit become amber.
The charging process takes about 3 hours. When the Notification indicator
goes off, the battery pack is fully charge.
Disconnect the AC adaptor from the AC outlet as well as the unit.