IBM ThinkPad T40 series Service And Troubleshooting Guide

Replacing the battery
1. Turn off the computer, or enter hibernation mode. Then disconnect the ac
adapter and all cables from the computer.
Note: If you are using a PC Card, the computer might not be able to enter
hibernation mode. If this happens, turn off the computer.
2. Close the computer display, and turn the computer over.
3. There are two battery latches. Slide the one above the battery to the left to
unlock it 1. Then slide the other one to the left and unlock it 2. Hold
the second latch in the unlocked position as you remove the battery.
4. Install a fully charged battery.
Replacing the battery
Chapter 2. Solving computer problems 37

IBM ThinkPad T40 series Specifications

General

Processor	Intel Pentium M (1.3 GHz - 1.7 GHz)
Chipset	Intel 855PM
Hard Drive Interface	ATA-100
Modem	56K V.92
Release Year	2003
RAM	256 MB - 2 GB (DDR SDRAM)
Storage	30 GB - 80 GB (HDD)
Display	14.1"
Graphics	ATI Mobility Radeon 7500 or 9000
Optical Drive	DVD-ROM/CD-RW Combo
Operating System	Windows XP Professional
Weight	2.2 kg (4.9 lbs)
Battery	Li-Ion
Wireless	Intel PRO/Wireless 2100
Ethernet	10/100 Mbps
Ports	2 x USB 2.0, VGA, RJ-11, RJ-45, Audio In/Out
Dimensions	311 mm x 255 mm x 26.6 mm (12.24" x 10.04" x 1.05")