IdeaPad U450P/U550 6 Cell Li-Ion Battery - Overview

Features and specifications

The IdeaPad U450P/U550 6 Cell Li-Ion battery (57Y6309) provides the longest run time for your IdeaPad U450P and U550 notebook.

Features and benefits:

  • 6 cell
  • 11.1 V dc
  • Lithium Ion (Li-Ion)
  • Over-discharge protection
  • Offers proven battery technology with balanced performance, capacity, and longevity protection
  • Backed by a one-year limited warranty with renowned Service and Support from Lenovo

Performance specifications:

  • Color: Black
  • Output voltage: 11.1 V
  • Capacity: 5200 mAH

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.

Physical specifications:

  • Approximate height: 20mm (0.7874 inch)
  • Approximate width: 51mm (2.0079 inch)
  • Approximate length: 268mm (10.5512 inch)
  • Approximate weight: 328g (0.723 1b)



1 year – Limited warranty


Hardware compatibility

The IdeaPad U450P/U550 6 Cell Li-Ion Battery is supported on IdeaPad U450P and U550.

Note: Not compatible with other Idea Pad notebooks.

  • IdeaPad U450P/U550 6 cell Li-Ion Battery
  • Manual


Agency approvals
UL, CE, CB, C-tick, GOST, TUV, PSE


Additional product information
Service parts - Parts listing 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
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  • Alias ID: MIGR-74243
  • Document ID: PD000971
  • Last Updated :26 Mar 2014
  • © 2015 Lenovo