01AV421 Internal Battery for Lenovo ThinkPad T470 T480 — 11.4V 24Wh

Product Overview

Restore the internal (bridge) battery function of your business ThinkPad with the 01AV421 internal battery for Lenovo ThinkPad T470 / T480 and compatible A-series models. This compact internal pack provides 24Wh at 11.4V, enabling battery hot-swap and keeping your laptop alive while you swap the external battery on the move.

Designed as an exact replacement for the original 01AV421 internal battery, it fits inside the chassis under the bottom cover with no modification. Built with Grade-A Li-ion cells, protected against over-charge and over-discharge. Ships from UK stock with a 1-year warranty.

Specifications

Standard Model	01AV421
Capacity	24Wh
Voltage	11.4V
Battery Type	Li-ion (Grade-A cells)
Design	Internal battery (installed inside chassis)
Color	Black
Condition	Brand New

Replace Part Numbers

• 01AV419
• 01AV420
• 01AV421
• 01AV489
• SB10K97576
• SB10K97577
• SB10K97578
• SB10F46497

Compatible Models

For Lenovo ThinkPad series with internal bridge battery bay:

• ThinkPad T470 Series (20HD / 20HE / 20HDA models, e.g. 20HD002TCD)
• ThinkPad T480 Series (20L5 / 20L6 models)
• ThinkPad A475
• ThinkPad A485
• ThinkPad A285
• ThinkPad 25 (TP25) Anniversary Edition

FAQ

Q1: What is the difference between the internal and external ThinkPad battery?

A: The internal battery (this product, 01AV421 family) is installed inside the chassis beneath the bottom cover. The external battery slots into the rear bay. ThinkPad T470 / T480 run on both together and allow hot-swapping the external battery without shutting down — but only when a charged internal battery is fitted.

Q2: How do I confirm the 01AV421 fits my T470 or T480?

A: Open the bottom cover and read the label on the original internal battery. If it shows 01AV421 (or another number from the list above such as 01AV489 / SB10K97576 / SB10F46497), this pack is the correct replacement.

Q3: Is installing an internal battery difficult?

A: It requires removing the bottom cover, disconnecting the internal battery cable and re-seating the connector. Basic DIY skill is sufficient for T470/T480; if you are not comfortable, any laptop service shop can complete the swap in minutes.

Q4: Delivery and warranty?

A: Ships from UK stock with tracking and is covered by a 1-year warranty.