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.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
China warehouse delivery method
Overseas Warehouse Shipping Times & Costs
Payment Methods
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Account Name: ShenZhen KingSener Science and Technology Co., Ltd
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Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- How long does a KingSener battery last?2 to 3 years (approx. 500-800 charge cycles) under normal temperatures.
- Laptop says "Battery Not Detected". How to fix?1. Hard Reset: Unplug AC, remove battery, hold power button for 30 seconds.
2. Clean Contacts: Wipe metal connection pins.
3. Reset Drivers: Uninstall battery drivers in Device Manager, then restart.
4. Update BIOS: Ensure motherboard firmware is up to date. - Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- How do I store a laptop battery long-term?Store it at 50% charge in a cool, dry place. Never store at 0% or 100%. Cycle the battery every 3 months to maintain chemical activity.
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Are KingSener batteries safe?Yes. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating. Fully CE, FCC, and RoHS certified.