Lenovo 5B10W13973 Replacement Battery
- Brand:
- Lenovo
- Capacity Wh:
- 57 Wh
- Nominal Voltage:
- 15.44 V
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Manufacturer: Lenovo Last updated: 2026-09-28
Lenovo 5B10W13973 Replacement Battery Review
Lenovo 5B10W13973 replacement battery, the 4-cell 15.44V 57Wh internal battery for the ThinkPad X1 Carbon Gen 9 (2021), also listed by Lenovo for the X1 Carbon Gen 10 and X1 Yoga Gen 6.
Lenovo treats 5B10W13972 through 5B10W13975 and 5B11M90056 through 5B11M90058 as interchangeable service parts for this battery, so any of those numbers on the old pack points to the same replacement.
What to check before you buy
The battery sits under the bottom cover. Turn off the built-in battery in the BIOS before disconnecting it. Confirm your machine type (20XW or 20XX for Gen 9) on the bottom label.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- ThinkPad X1 Carbon Gen 9 and Gen 10 owners with a worn battery
Not for
- ThinkPad X1 Carbon 5th and 6th Gen, which use the 3-cell 01AV430 pack
Specifications
What these specs mean| Brand | Lenovo |
|---|---|
| Battery Model Code | 5B10W13973 |
| OEM Spare Part Number | 5B10W13972, 5B10W13973, 5B10W13974, 5B10W13975, 5B11M90056, 5B11M90057, 5B11M90058, SB10T83215, SB10T83216, SB10T83217, SB10T83218 |
| Nominal Voltage | 15.44 V |
| Cell Count | 4 |
| Series Configuration | 4S |
| Capacity Wh | 57 Wh |
| Capacity Basis | OEM Label |
| Compatible Models | Lenovo ThinkPad X1 Carbon Gen 9 (20XW, 20XX), ThinkPad X1 Carbon Gen 10 (21CB), ThinkPad X1 Yoga Gen 6 (20XY) |
| Replaces Part Numbers | 5B10W13972, 5B10W13974, 5B10W13975, 5B11M90056, 5B11M90057, 5B11M90058 |