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9-Cell Li-Ion Notebook Battery 11.1v 8400mah 91wh 27++ For Len / Mfr. No.: 57y4545-AA

9-Cell Li-Ion Notebook Battery 11.1v 8400mah 91wh 27++ For Len / Mfr. No.: 57y4545-AA
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Item Number: add-57y4545aa
Vendor Number: 57Y4545-AA
Vendor: Addon
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This is a Lenovo 57Y4545 compatible 9-Cell Li-ion 10.8V 8400mAh 91Wh battery specifically designed for Lenovo notebooks. With up to 8400mAh and 91Wh of power you can rely upon long lasting power be it for work or play. Our batteries mimic the OEM form factor so they fit properly with your notebook. Batteries are 100% tested and compatible with the intended system. Battery life depends on many factors including: available DRAM, screen brightness, applications, features, power management, battery condition and other user preferences. With our certification test program, we can guarantee your product will work right the first time. Our products are also guaranteed by federal law to not affect or void OEM warranties.

General Information

Manufacturer Part Number57Y4545-AA
Manufacturer Website Address
Product Model57Y4545-AA
Product NameLenovo 57Y4545 Compatible 9-CELL LI-ION Battery 10.8V 8400mAh 91Wh 27++
Product TypeBattery

Battery Information

Battery RechargeableYes
Battery SizeProprietary Battery Size
Battery ChemistryLithium Ion (Li-Ion)
Battery Capacity8400 mAh
Battery Energy91 Wh
Number of Cells9
Output Voltage10.8 V DC

Physical Characteristics

Weight (Approximate)1.50 lb



Lenovo ThinkPad Series Notebooks :

  • T410
  • T410i
  • T420
  • T510
  • T510i
  • T520
  • W510
  • W520 (Dual-Core)
  • W520 (Quad-Core)


Limited WarrantyLifetime