HP Compaq NC4000 User Manual

2–28 Hardware and Software Guide
Power
Calibrating a Battery Pack
This section describes when and how to calibrate a battery pack.
When to Calibrate
Even when a battery pack is heavily used, calibrating it should
not be necessary more than once a month. It is not necessary to
calibrate a new battery pack before first use. Calibrate the battery
pack under the following conditions:
■ When battery charge status displays seem inaccurate.
■ When you observe a significant change in battery run time.
■ When the battery pack has been unused for one month
or more.
How to Calibrate
To calibrate a battery pack, you must fully charge, fully
discharge, and then fully recharge the battery pack.
Charging the Battery Pack
A battery pack can charge whether the notebook is off or in use,
but it will charge faster when the notebook is off.
To charge the battery pack:
1. Insert the battery pack into the notebook.
2. Connect the notebook to an AC outlet or an optional adapter
or charger. (The battery light on the notebook is turned on.)
3. Leave the notebook connected to external power until
the battery pack is fully charged. (The battery light on the
notebook is turned off.)

HP Compaq NC4000 Specifications

General

Processor cache	1 MB
Processor model	-
Processor frequency	1.4 GHz
Processor cache type	L2
Processor front side bus	400 MHz
Processor core voltage (AC)	0.956 - 1.388 V
HDD speed	5400 RPM
HDD interface	Ultra-ATA/100
Optical drive type	No
Card reader integrated	Yes
Total storage capacity	40 GB
Compatible memory cards	SD
Number of HDDs installed	1
Pixel pitch	0.264 x 0.264 mm
Display diagonal	12.1 \
Display brightness	130 cd/m²
Display resolution	1024 x 768 pixels
Native aspect ratio	4:3
Display number of colors	16.78 million colors
Type	PC
Modem speed	56 Kbit/s
Power supply type	AC/DC
Power requirements	90 - 264V, 47/63Hz
Wireless technology	Wi-Fi
Graphics card family	AMD
Compatible operating systems	Windows XP
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Memory slots	2x SO-DIMM
Internal memory	0.25 GB
Internal memory type	DDR-SDRAM
Maximum internal memory	1 GB
Audio system	PS
Pointing device	Touchpad
Cabling technology	10/100/1000Base-T(X)
Networking features	Gigabit Ethernet
Operating system installed	Windows XP Professional
TV-out type	S-Video
Charging port type	DC-in jack
USB 2.0 ports quantity	2
Firewire (IEEE 1394) ports	0
Cable lock slot type	Kensington
AC adapter power	65 W
Number of battery cells	6
Operating shock	40 G
Operating altitude	0 - 3048 m
Non-operating shock	240 G
Operating vibration	0.5 G
Non-operating altitude	0 - 9144 m
Non-operating vibration	1 G
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	10 - 35 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 90 %
Certification	UL, CSA, VDE/TUV
Product color	Black, Silver
Country of origin	China

Weight and Dimensions

Depth	233.7 mm
Width	279.4 mm
Height	27.9 mm
Weight	1590 g