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ThinkPad Reserve Edition 8 cell Li-Ion battery - Overview

ThinkPad Reseve Edition 8 Cell Battery

Features and specifications

The ThinkPad Reserve Edition 8 cell Li-Ion battery (41U5259) is a rechargeable, high capacity replacement part for the ThinkPad Reserve Edition system. The ThinkPad Reserve Edition 8 cell Li-Ion battery features:

  • Lithium-Ion technology
  • Eight-cell, rechargeable system battery
  • Output Voltage: 14.4 V dc
  • Battery Performance amp-hours: 4.6 Ah
  • 7.0 hours average battery life
  • Standard system battery specifications
  • Over-discharge protection

Note: Battery life and recharge times will vary based on many factors including screen brightness, applications, features, power management, battery conditioning, and other customer preferences. These model numbers achieved Battery Rundown Time of at least the time shown during testing. A description of the testing is available here.

Physical specifications
  • Approximate height: 21 mm (0.81 in)
  • Approximate width: 279 mm (11.01 in)
  • Approximate depth: 91 mm (3.59 in)
  • Weight: 428 g (0.94 lb)


1 year – Customer Replacement Unit (CRU) Service

  • Aailability date: 10 Jul 2007 (Worldwide)
  • Discontinued, withdrawn from marketing: October 2009

Hardware compatibility
Machine Type - Models
ThinkPad Reserve Edition


  • Battery
  • Publications

Agency approvals
CE MARK, UL-60950, C-UL, ACA/C-Tick

Additional product information
Service parts - Part number listing for your product
User's guide - Instruction manual for your product
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 : PD011207
Legacy Document ID : MIGR-68216
Last Updated :
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