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ThinkPad T40 Series High Capacity Li-Ion Battery - Overview

 T40 Series High Capacity Battery (08K8197)

At a glance

The ThinkPad T40 Series High Capacity Li-Ion Battery (08K8197) is a rechargeable system battery for the ThinkPad T40 Series which extends unplugged operating time.


1 year Limited - customer carry-in exchange


You will receive one box containing the following items:

  • Battery
  • Publications

Product dates


  • Announce date: March 2003
  • Planned availability date: March 2003
  • Effective withdrawal date: July 2005

Technical specifications

Performance specifications as known at time of announcement

  • Battery life: Up to 6.75 hours without recharge
  • Output voltage: 10.8 V DC (nominal)
  • Charge time
    • System operational: 7.0 hours maximum
    • Power off: 4.3 hours maximum

Physical, environmental, and compatibility specifications as known at time of announcement


  • 1.06 lbs
  • 480g


  • 0.83 inches
  • 21 mm


  • 8.94 inches
  • 227 mm


  • 3.19 inches
  • 81 mm

Operating temperature

  • Between 5 degrees Celsius and 35 degrees Celsius
  • Between 41 degrees Fahrenheit and 95 degrees Fahrenheit

Relative humidity

  • Operating: between 8% and 80%


  • 36-inch drop

Vibration (Random RMS)

  • 1.04 G (2Hz to 200Hz)

Agency approvals

  • UL-1950
  • C-UL
  • ACA/C-Tick

Hardware compatibility

The ThinkPad T40 Series High Capacity Li-Ion Battery (08K8197) is supported on the following systems:

DescriptionMachine TypeModel
ThinkPad T40 Series2373, 2374All


Related Information:

Service parts
Lenovo Support: Batteries: Reference Guide - A list of other batteries
Personal Systems Reference (PSREF) - Comprehensive information on the features and technical specifications of Lenovo products.
All Day Computing ( - Information on batteries, including estimated battery life, and power adapters



If you are unable to find what you are looking for, please do try the following options:
1. Lenovo Assisted Search
2. Product usage and general troubleshooting tips
3. Lenovo Support Forum
4. Technical Support Call Centre

Country Availability
Document ID : PD000466
Legacy Document ID : MIGR-46435
Last Updated :
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