Charging A New Battery Pack; Charging An In-Use Battery Pack; Obtaining Accurate Charge Information - HP Compaq NC6140 Hardware Manual

Battery Pack

Charging a New Battery Pack

Fully charge the battery pack while the notebook is connected to
AC power through the AC Adapter.
A new battery pack that has been partially charged, but not fully
charged, can run the notebook, but the battery charge display may
be inaccurate.

Charging an In-Use Battery Pack

To prolong battery life, charge the battery pack only at room
temperature.

Obtaining Accurate Charge Information

To increase the accuracy of the battery charge display, calibrate
the battery pack. If a battery pack has not been used for 1 month
or more, calibrate the battery pack instead of simply charging it.
For calibration instructions, see "Calibrating a Battery Pack" later
in this chapter.
3–4 Hardware Guide