45N1762 76+ Laptop Battery Compatible with Lenovo ThinkPad E550 E560

In this review the 45N1762 76+ replacement battery is evaluated as a practical, budget-friendly option for owners of several Lenovo ThinkPad E series models. The single biggest reason to consider this battery is straightforward: it restores portable runtime with a 10.8V, 5200mAh Li-ion pack that is designed to match the original fit and electrical specs. For users who need a direct, like-for-like replacement for a worn battery and value easy installation and compatibility across E550/ E555/ E560 families, this battery earns attention.

Key Features

• Direct compatibility: Designed to replace Lenovo part numbers such as 45N1758, 45N1759, 45N1760 and 4X50G59217 so it fits ThinkPad E550, E550c, E555, E560 and E565 models without modification.
• Rated capacity: The 5200mAh, 10.8V specification provides a sensible balance of power and weight for day-to-day office and mobile use, restoring typical run times for mainstream productivity tasks.
• Six-cell design: A 6Cell Li-ion arrangement offers stable voltage and compatibility with original mounting points and battery contacts on supported ThinkPad models.
• Safety tested: Cells and battery assemblies are described as Grade A with overcharge/discharge protection and CE/FCC/RoHS certifications to match basic OEM safety expectations.
• Service and warranty: The product includes a 12-month warranty and a 30-day trial window with direct seller support for replacements if defects appear.

Who It's For

This replacement battery is best for ThinkPad E550, E550c, E555, E560 and E565 owners who need a cost-effective option to replace a failing or degraded battery and who want a battery that is intended to match the original voltage and physical fit. It suits professionals and students who carry a laptop and need predictable runtime for office apps, web browsing and light multimedia.

It is not the choice for users seeking extended high-capacity runtime beyond the original spec or for those who require manufacturer-authorized parts for warranty reasons. If absolute top-tier longevity or a branded OEM cell is essential, shoppers should consider an official Lenovo replacement or professional service options instead.

Pros & Cons

Pros

• Fits the listed ThinkPad E series models and compatible part numbers without modification, making replacement simple.
• Good value for the price with many customers praising the ease of installation and the fit.
• Includes safety features and certifications plus a 12-month warranty for peace of mind.

Cons

• Battery life reports are mixed; some users experience shorter real-world runtime compared with a new OEM battery.

Specifications

Model	45N1762
Battery type	Li-ion
Voltage	10.8V
Capacity	5200mAh
Cells	6Cell
Compatible part numbers	45N1758, 45N1759, 45N1760, 45N1761, 45N1762, 45N1763, 4X50G59217
Compatible models	ThinkPad E550 / E550c / E555 / E560 / E565 series

Our Verdict

The 45N1762 76+ replacement battery is a practical and affordable way to restore laptop mobility for many ThinkPad E series owners. It matches the original voltage and physical fit, is safety tested and backed by a 12-month warranty, making it a sensible value buy for users who need reliable, like-for-like replacement rather than extended high-capacity performance.

Frequently Asked Questions

Will this battery fit my ThinkPad E560?
Yes, the battery lists compatibility with the ThinkPad E560 series and the specified part numbers that match that model.

How long will the battery last before replacement?
The battery is rated for up to about 500 recharge cycles over its life, which translates to typical multi-year use depending on charge habits and workload.

Is the battery covered if it fails?
Yes, the seller offers a 12-month warranty and a 30-day trial period with options for replacement in case of defects.