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ThinkPad X40 Series 4-Cell Li-Ion Battery - Overview

At a glance

The ThinkPad X40 Series 4-Cell Li-Ion Battery (92P1009) is a small, lightweight system battery that can replace the original system battery or be swapped in as a spare.


1 year Limited - customer carry-in exchange


You will receive one box containing the following items:

  • Battery
  • Publications

Product dates

  • Availability date: February 2004
  • Discontinued, no longer availabe: December 2007

Technical specifications

Technical information

  • 4 cells
  • Lithium Ion (Li-Ion)
  • 1.9Ah

Performance Specifications

  • Battery life: 3.5 hours average without recharge
  • Output voltage: 14.4 V DC (nominal)
  • Charge time
    • 3.5 to 6 hours depending on the ThinkPad system usage

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


  • 0.44 lbs; 200 g


  • 0.50 inches; 12.7 mm


  • 8.13 inches; 208.5 mm


  • 1.75 inches; 44.75 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 95%


  • 50cm free drop

Vibration (Random RMS)

  • 1.04 G (2 Hz to 200 Hz)

Agency approvals

  • CE MARK, UL-1950, C-UL, ACA/C-Tick

Hardware compatibility

Description Machine Type - Models
ThinkPad X40, X41All


Parts information
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

País de disponibilidad
Documento de identidad : PD001054
Legacy Document ID : MIGR-53655
Última actualización :
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