01AV427 72Wh Laptop Battery Replacement for Lenovo ThinkPad - Reliable

Our review of the 01AV427 72Wh laptop battery covers whether this direct replacement is a practical fix for aging Lenovo ThinkPad machines. For owners of T470, T480, T570, T580, P51S, P52S, TP25, A475 and A485 series laptops who need a plug-and-play Li-ion swap, the 01AV427 stands out for being a straightforward, affordable replacement that restores usable runtime and fits like the original. The single biggest reason to buy is that it matches the original voltage and capacity specifications (10.8V, 72Wh / 6600mAh) so you get compatible power without hunting for the exact OEM part number.

Key Features

• Direct replacement compatibility: Designed to replace part numbers like 01AV427, SB10K97584 and 4X50M08812 so installation is simple for supported ThinkPad models.
• Factory capacity matching: The 72Wh 6600mAh rating provides the same rated energy as many OEM packs, helping devices accept normal charge and discharge behavior.
• Plug-and-play Li-ion: The battery is supplied as a plug-and-play unit so most users can swap it without extra tools beyond opening the back case.
• Correct voltage: With a 10.8V nominal voltage the pack aligns with the laptops it supports, reducing risk of incompatibility when the model is confirmed.
• Solid fit and finish: The black case and terminal layout are made to fit the original bay, which reviewers noted resulted in a snug, correct fit.

Who It's For

This battery is best for Lenovo ThinkPad owners with an aging or failing pack who want a direct replacement that preserves factory voltage and capacity specifications. It suits users comfortable opening the laptop back case to verify the original battery model number and performing a straightforward swap.

It is not the right choice for machines outside the listed models or for buyers who expect extended life beyond OEM levels; some users report mixed long-term runtime compared with brand-new original packs, so professionals needing guaranteed all-day uptime should consider spare solutions or new OEM options.

Pros & Cons

Pros

• Restores usable runtime by matching the original 10.8V and 72Wh specifications.
• Good fit in supported ThinkPad bays, so installation is typically painless.
• Positive feedback on build quality and value for money compared with replacing the whole laptop.

Cons

• Battery life reports are mixed; some users see shorter longevity than hoped after several weeks of use.

Specifications

Model	01AV427
Voltage	10.8V
Capacity	72Wh / 6600mAh
Battery Type	Plug & Play Li-ion
Color	Black
Replacement Part Numbers	01AV427, SB10K97584, 01AV428, 01AV492, 4X50M08812, SB10K97585
Compatible Series	ThinkPad T470, T480, T570, T580, P51S, P52S, TP25, A475, A485

Our Verdict

The 01AV427 72Wh replacement is a practical, cost-effective option for ThinkPad owners who need a direct-fit battery that matches OEM voltage and capacity. It delivers solid build quality and correct fit for the supported models, making it a sensible repair choice; buyers who require extended long-term endurance should monitor runtime and consider keeping a spare if continuous all-day use is critical.

Frequently Asked Questions

How do I confirm this battery fits my laptop?
Open the laptop back case and check the model number on your original battery; match it to listed replacement part numbers like 01AV427 or 4X50M08812.

Is the battery ready to use out of the box?
Yes, the unit is a plug-and-play Li-ion replacement, but read the manual and follow standard safety and installation steps before use.

Will this extend battery life compared with a worn OEM pack?
Many users report noticeably improved runtime versus aged OEM batteries, though long-term capacity varies and some customers see mixed endurance over weeks of use.