The ThinkPad T480 is popular because it supports Lenovo’s “Power Bridge” design: a small internal battery plus a removable external battery.
That’s great for runtime and hot-swapping—but it also means there are two different battery “families” to identify when you shop.
This guide lists the official Lenovo option/accessory part numbers and the most common FRU/service part numbers you’ll see printed on batteries that fit the T480.
Table of contents
- Quick compatibility map (most important)
- How to confirm your battery before ordering
- Internal (integrated) battery part numbers (24Wh)
- External (removable) battery part numbers (61 / 61+ / 61++)
- Common T480 battery shopping mistakes
- Optional: shop T480 batteries by capacity
Quick compatibility map
| Battery position | Lenovo battery name | Capacity | Lenovo option / accessory P/N | Common FRU / service P/N you may see |
|---|---|---|---|---|
| Internal (inside the bottom cover) | Internal Li-ion battery (integrated) | 24Wh | 4X50T84067 | 01AV419 / 01AV420 / 01AV421 / 01AV489 (varies by revision) |
| External (slides in from the rear) | ThinkPad Battery 61 | 24Wh | 4X50M08810 | 01AV422 / 01AV423 / 01AV424 / 01AV452 / 01AV490 (common) |
| External (slides in from the rear) | ThinkPad Battery 61+ | 48Wh | 4X50M08811 | 01AV425 / 01AV426 / 01AV491 (common) |
| External (slides in from the rear) | ThinkPad Battery 61++ | 72Wh | 4X50M08812 | 01AV427 / 01AV492 (common) |
Tip: If you only want a quick answer: most T480 owners are choosing between the external 61 (24Wh), 61+ (48Wh), and 61++ (72Wh)—and those map to option P/N 4X50M08810, 4X50M08811, and 4X50M08812.
How to confirm your battery before ordering
- Confirm the laptop model: this guide is for ThinkPad T480 (commonly Type 20L5 / 20L6). Do not assume “T480” = “T480s”.
- Check the battery label: look for “ASM P/N”, “FRU P/N”, or a code like 01AVxxx on the sticker.
- Decide what you’re replacing:
- If you remove a rear battery by sliding latches, that’s the external battery (61 / 61+ / 61++).
- If you must open the bottom cover to access it, that’s the internal battery (24Wh).
Internal (integrated) T480 battery part numbers (24Wh)
The internal T480 battery is a 24Wh integrated Li-ion battery. The most useful number for shopping is the Lenovo option/accessory part number:
- 4X50T84067 (ThinkPad T470/T480 internal Li-ion battery, 3-cell, 24Wh)
You may also see these FRU/service part numbers on the label (common equivalents across revisions/manufacturers):
- 01AV421 (very common)
- 01AV419 / 01AV420 / 01AV489
External (removable) T480 battery part numbers (61 / 61+ / 61++)
Option 1: ThinkPad Battery 61 (24Wh external)
- Lenovo option/accessory P/N: 4X50M08810
- Common FRU/service P/N: 01AV422 / 01AV423 / 01AV424 / 01AV452 / 01AV490
Option 2: ThinkPad Battery 61+ (48Wh external)
- Lenovo option/accessory P/N: 4X50M08811
- Common FRU/service P/N: 01AV425 / 01AV426 / 01AV491
Option 3: ThinkPad Battery 61++ (72Wh external)
- Lenovo option/accessory P/N: 4X50M08812
- Common FRU/service P/N: 01AV427 / 01AV492
Common T480 battery shopping mistakes
- Mixing up T480 vs T480s: the T480s uses a different battery design (no Power Bridge external battery like the T480).
- Ordering “a T480 battery” without specifying internal vs external: the part numbers are completely different.
- Assuming the biggest battery is always best: the 61++ (72Wh) adds weight and sticks out more; some users prefer 61+ for balance.
Optional: shop T480 batteries by capacity
View all ThinkPad T480 batteries
External upgrade (48Wh / Battery 61+)
Looking for longer runtime? Many T480 owners upgrade the removable battery to a higher Wh option.
Last note: Lenovo may ship the “same” battery capacity under different FRU/service numbers depending on supplier/revision. When in doubt, match what’s printed on your current battery label.