King EBOYEE ThinkPad T470 T480 T580 Internal Battery 01AV421

King EBOYEE 01AV421 is a direct internal replacement battery built to revive Lenovo ThinkPad T470/T480/T580/A475/A485 and TP25 notebooks with the same fit and electrical specs.

If your ThinkPad no longer holds a charge or shuts down unpredictably, this King EBOYEE internal battery is manufactured to match Lenovo part numbers 01AV421, 01AV419, 01AV489, 01AV420 and SB10K97577/576/578. It delivers 11.46V and 24Wh across three cells, arrives as a new unit with screwdrivers and installation instructions, and includes a smart protection circuit to reduce the risk of overcharge, overheating, and short circuits. This description explains compatibility, installation basics, performance expectations, and who benefits most from this replacement battery.

Which Lenovo models and part numbers will this battery fit?

This King EBOYEE battery replaces a set of internal Lenovo part numbers and is designed for specific ThinkPad series. Confirm your old battery’s part number before purchasing to ensure a proper match.

• Compatible part numbers: 01AV421, 01AV419, 01AV489, 01AV420, SB10K97577, SB10K97576, SB10K97578
• Fits Lenovo ThinkPad models: T470 series, T480 series, T580 series, A475, A485, and TP25 (25th Anniversary) notebooks
• Voltage & capacity: 11.46V / 24Wh, 3-cell configuration

How difficult is installation — do I need tools or technical skills?

This is an internal battery replacement, so you’ll need to open the laptop’s back cover. The package includes two screwdrivers and step-by-step instructions to simplify the swap, but basic comfort with small electronics helps.

• Requires screwdriver to remove back case—tools included in the package
• Follow the enclosed manual for safe removal and reconnection of the internal battery plug
• If unsure, consider professional installation to avoid damaging connectors or casing

What performance and safety features does the King EBOYEE battery offer?

The battery uses Grade A cells and a built-in smart chip that manages charging and protects against common electrical faults. It’s designed to be cycle-resistant and comes with warranty and support for peace of mind.

• Smart protection: overcharge, overheat, and short-circuit safeguards
• Rated for 500+ charge cycles with UL/CE/FCC-compliant cells
• Includes a 12-month warranty and 24/7 customer support from the seller

Will this replacement restore my laptop’s original runtime?

Replacing a degraded internal battery with the correct spec battery typically returns runtime close to the original design, but actual runtime depends on your device settings, age of other components, and workload.

• Matches original voltage and capacity (11.46V, 24Wh) for predictable performance
• New Grade A cells often restore most of the original battery life
• Power management settings and background tasks will still affect total runtime

Who is this for: This internal replacement battery is intended for owners of Lenovo ThinkPad T470, T480, T580, A475, A485, or TP25 notebooks who need the exact internal part match (01AV421/01AV419/01AV489/01AV420 or SB10K97577 series) and are comfortable opening their laptop or arranging professional installation. Choose this King EBOYEE pack if you want a new internal battery with included installation tools, smart protection circuitry, compliance certifications, and a one-year warranty to replace a failing original battery and regain reliable mobile power.