Nokia 8860 Owner's Manual page 95

Please refer to the chart below for charging times in the rear charging
slot.
Battery Option
Extended NiMH
Battery 600 mAh
(BMP-1A) Chrome
Extended NiMH
Battery 600 mAh
(BMP-1D) Black
Note: Please note that if you are charging a battery in the rear charging slot
while another battery occupies the front slot, please allow an additional
two hours for a "maintenance" charge for the battery in the front slot.
Please see page 87 for charging times for the front charging slot.
If you're charging a battery in the front charging slot, charging is
indicated by the scrolling battery bars on the right side of your phone's
display. When the scrolling stops, the battery is approximately 80%
charged. A battery will be fully charged a couple of hours after the
scrolling stops.
Also, you may notice a light indicator on the stand, which is used for
charging a spare battery. A green light indicates a battery is at least 80%
full; the red light indicates a battery is charging.
Leather Belt Case (CBK-5)
Using this leather case with your phone may protect the chrome from
scratches.
CGE-1 Rear Slot Charging Times
Using ACP-7U
When
front
slot empty occupied
6 hrs
30 min
6 hrs
30 min
[ 90 ]
Using ACP-8U
When When
front front
slot empty
8 hrs 4 hrs
30 min 10 min
8 hrs 4 hrs
30 min 10 min
When
front
occupied
5 hrs
25 min
5 hrs
25 min