NEC 750C - Manual (Page 22)

Getting Familiar with Your MobilePro 750C 2-9
It takes approximately 4.5 hours to recharge a fully de-
pleted battery pack regardless of the system power state.
NOTE
Through normal use, the capacity of a battery
pack will gradually decline. Should you notice that
the battery does not stay charged as long as ex-
pected, it is probably necessary to replace the bat-
tery with a new one. Please refer to the section
“Battery Replacement” in this chapter. A battery
pack should recharge approximately 300 times dur-
ing the life of the battery.
Battery Replacement
Note the following when replacing batteries:
T If the main battery becomes weak, the MobilePro auto-
matically turns off. Recharge or replace the main battery
immediately if the power goes off.
T When replacing the back-up battery, always use a
CR2032 battery.
! WARNING
Only use a CR2032 battery as your back-up battery.
Installing another battery type can result in an ex-
plosion or fire.
See “Battery Precautions” later in this chapter, for
more battery handling information.
T If you fail to replace a depleted main battery for an ex-
tended period of time and the back-up battery is weak,
the contents of the MobilePro memory may be lost.