Product Overview
The X240 replacement battery delivers 6.34Ah (72Wh) with 6 cells of capacity at 11.22V for Lenovo ThinkPad X240, X250, X260 and X270 plus the compatible T / W / L / K series listed below. It directly replaces FRU numbers 45N1136, 45N1738, 45N1134 and 45N1777 (45N1124-45N1128 family), with premium Li-ion cells made in China. This US-stock unit is 100% brand new and ships fast with a 1-year warranty.
Specifications
| Attribute | Details |
|---|---|
| Standard Model | 45N1738 / 45N1136 |
| Capacity | 6.34Ah (72Wh) — 6 Cells |
| Voltage | 11.22V |
| Battery Type | Li-ion |
| Cell | Made in China, high quality guarantee |
| Color | Black |
| Stock Location | US Stock |
| Condition | Replacement Battery (100% Brand New, 1-year warranty!) |
| Warranty | 1-Year Warranty |
Replace Part Numbers
- 45N1136
- 45N1738
- 45N1134
- 45N1777
- 45N1124
- 45N1125
- 45N1126
- 45N1127
- 45N1128
Compatible Models
- Lenovo ThinkPad X240
- Lenovo ThinkPad X250
- Lenovo ThinkPad X260
- Lenovo ThinkPad X270
- Lenovo ThinkPad T440
- Lenovo ThinkPad T440S
- Lenovo ThinkPad T450
- Lenovo ThinkPad T450S
- Lenovo ThinkPad T460
- Lenovo ThinkPad T460P
- Lenovo ThinkPad T550
- Lenovo ThinkPad T560
- Lenovo ThinkPad W550
- Lenovo ThinkPad W550S
- Lenovo ThinkPad L450
- Lenovo ThinkPad L460
- Lenovo ThinkPad P50S
- Lenovo ThinkPad K2450
- Lenovo ThinkPad K20-80
- Lenovo ThinkPad K21-80
Attention!!! Not for the X240S, x230S, P50, T450P, T460S, T470, T550S, T550F, T560S or T560P.
FAQ
Which ThinkPad models does this 72Wh X240 battery fit?
It fits Lenovo ThinkPad X240, X250, X260, X270, T440, T440S, T450, T450S, T460, T460P, T550, T560, W550, W550S, L450, L460, P50S, K2450, K20-80 and K21-80. Confirm one of the FRU codes (45N1136 / 45N1738 / 45N1134 / 45N1777) on your original battery before ordering.
Which models are NOT compatible with this battery?
Attention: this 72Wh 6-cell battery is not for the X240S, x230S, P50, T450P, T460S, T470, T550S, T550F, T560S or T560P. For a T470P or other unlisted model, verify your original battery FRU (45N1xxx series) first — an isolated-model battery must match exactly.
Is this battery US stock and ready to ship?
Yes — this listing is marked US Stock for local fast dispatch, and the battery is 100% brand new.
What warranty is included?
A 1-year warranty is included. The advanced Li-ion cells deliver stable voltage output and support hundreds of charge cycles with protection against overcharge, over-discharge, short-circuit and overheating.