Nokia 1506 User Manual page 70

Important: Battery talk and standby times are
estimates only and depend on signal strength, network
conditions, features used, battery age and condition,
temperatures to which battery is exposed, use in digital
mode, and many other factors. The amount of time a
device is used for calls will affect its standby time.
Likewise, the amount of time that the device is turned
on and in the standby mode will affect its talk time.
Charging times
The following charging times are approximate
Charger options
BL-4C 860 mAh Li-Ion battery
Talk and standby times
Function
Talk time (with standard battery)
Standby time (with standard battery) Up to 10 days
70
AC-8C
Up to 3 hours
Digital
Up to 3.25 hours