Lenovo L18C4P71 Replacement Battery
- Brand:
- Lenovo
- Capacity Wh:
- 51 Wh
- Nominal Voltage:
- 15.36 V
Quick facts
L18C4P71 is a battery that fits 4 laptop models: Lenovo ThinkPad X1 Carbon 7th Gen, Lenovo ThinkPad X1 Carbon 8th Gen, Lenovo ThinkPad X1 Yoga 4th Gen, Lenovo ThinkPad X1 Yoga 5th Gen. It is also sold as L18M4P72, L18L4P71, 02DL004, 02DL005, 02DL006, 5B10W13930, 5B10W13931, 5B10W13932, SB10K97642, SB10K97643, SB10K97644, SB10T83173, SB10T83174, 5B10W51833, 5B10W51834, 5B10W51835.
| Part number | L18C4P71 |
|---|---|
| Part type | Battery |
| Also sold as | L18M4P72, L18L4P71, 02DL004, 02DL005, 02DL006, 5B10W13930, 5B10W13931, 5B10W13932, SB10K97642, SB10K97643, SB10K97644, SB10T83173, SB10T83174, 5B10W51833, 5B10W51834, 5B10W51835 |
| Capacity | 51 Wh |
| Voltage | 15.36 V |
| Cells | 4 |
| Last checked | 2026-10-02 |
Compatible models (4)
- Lenovo ThinkPad X1 Carbon 7th Gen
- Lenovo ThinkPad X1 Carbon 8th Gen
- Lenovo ThinkPad X1 Yoga 4th Gen
- Lenovo ThinkPad X1 Yoga 5th Gen
Laptops compatible with L18C4P71
Fits 4 laptops: 4 OEM confirmed, 0 seller listed, 0 reported by users.
Also sold as: L18M4P72, L18L4P71, 02DL004, 02DL005, 02DL006, 5B10W13930, 5B10W13931, 5B10W13932, SB10K97642, SB10K97643, SB10K97644, SB10T83173, SB10T83174, 5B10W51833, 5B10W51834, 5B10W51835
- Lenovo ThinkPad X1 Carbon 7th GenOEM confirmedMatched on: part number L18C4P71
- Lenovo ThinkPad X1 Carbon 8th GenOEM confirmedMatched on: part number L18C4P71
- Lenovo ThinkPad X1 Yoga 4th GenOEM confirmedMatched on: part number L18C4P71
- Lenovo ThinkPad X1 Yoga 5th GenOEM confirmedMatched on: part number L18C4P71
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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Manufacturer: Lenovo Last updated: 2026-10-02
Where to buy
- AmazonGo to store
Lenovo L18C4P71 Replacement Battery Review
Lenovo L18C4P71 replacement laptop battery, 15.36V 51Wh 4-cell. Fits Lenovo ThinkPad X1 Carbon 7th Gen, Lenovo ThinkPad X1 Carbon 8th Gen, Lenovo ThinkPad X1 Yoga 4th Gen, Lenovo ThinkPad X1 Yoga 5th Gen.
Internal Li-polymer pack; Lenovo PSREF lists a 51Wh integrated battery for the X1 Carbon 7th Gen. Sellers list L18C4P71, L18M4P72 and L18L4P71 as the same 15.36V 51Wh 4-cell replacement.
What to check before you buy
Packs for the X1 Carbon 9th, 10th and 11th Gen and the X1 Yoga 6th, 7th and 8th Gen are different and do not fit, per seller fitment notes.
Full compatibility list
Lenovo ThinkPad X1 Carbon 7th Gen, Lenovo ThinkPad X1 Carbon 8th Gen, Lenovo ThinkPad X1 Yoga 4th Gen, Lenovo ThinkPad X1 Yoga 5th Gen
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Owners of the Lenovo ThinkPad X1 Carbon 7th Gen, Lenovo ThinkPad X1 Carbon 8th Gen, Lenovo ThinkPad X1 Yoga 4th Gen, Lenovo ThinkPad X1 Yoga 5th Gen with the L18C4P71 pack fitted
Not for
- Machines fitted with a different pack code; check the label first
Specifications
What these specs mean| Brand | Lenovo |
|---|---|
| Battery Model Code | L18C4P71 |
| Nominal Voltage | 15.36 V |
| Cell Count | 4 |
| Series Configuration | 4S |
| Capacity Wh | 51 Wh |
| Capacity mAh | 3325 mAh |
| Capacity Basis | OEM Spec |
| Shipping Classification | UN3481 |
| Compatible Models | Lenovo ThinkPad X1 Carbon 7th Gen, Lenovo ThinkPad X1 Carbon 8th Gen, Lenovo ThinkPad X1 Yoga 4th Gen, Lenovo ThinkPad X1 Yoga 5th Gen |
| Replaces Part Numbers | L18M4P72, L18L4P71, 02DL004, 02DL005, 02DL006, 5B10W13930, 5B10W13931, 5B10W13932, SB10K97642, SB10K97643, SB10K97644, SB10T83173, SB10T83174, 5B10W51833, 5B10W51834, 5B10W51835 |