The 45N1145 replacement battery offers 10.8V and 56Wh capacity, designed for Lenovo ThinkPad L440 and L540 business laptops. Compatible with the 45N1149 OEM part number as well, this lithium-ion pack restores dependable runtime, powers through long work sessions and helps your ThinkPad keep performing at its best without the cost of a full OEM replacement.
Specifications
| Voltage | 10.8V |
| Capacity | 56Wh |
| Battery Type | Li-ion (Rechargeable) |
| Cell Configuration | 3-Cell |
| Condition | Brand New, 100% Compatible |
| Warranty | 12 Months |
Replacement Part Numbers
- 45N1144
- 45N1145
- 45N1148
- 45N1149
- 45N1150
- 45N1151
- 45N1158
- 45N1159
- 45N1160
- 45N1769
- 45N1779
- 57+
Compatible Models
- Lenovo ThinkPad L440
- Lenovo ThinkPad L540
- ThinkPad T440p
- ThinkPad T540p
- ThinkPad W540
- ThinkPad W541
FAQ
Q: Which ThinkPad models is this battery for?
A: This 45N1145 and 45N1149 battery is designed for the Lenovo ThinkPad L440 and L540 series. Please confirm the part number printed on your original battery before placing an order.
Q: How long does the battery last on a full charge?
A: With 10.8V and 56Wh capacity, runtime typically reaches several hours depending on workload, screen brightness and power settings. Replacing a worn original battery with this new pack will noticeably improve daily battery life.