Lenovo
Lenovo 45N1149 ThinkPad Battery 57+ 6 Cell 5200 mAh
6-cell lithium-ion notebook battery rated at 5200 mAh and 10.8 V for ThinkPad T440p, L440 and L540 models
- Electrical Outlet Plug TypeBattery
- Genuine Lenovo replacement for ThinkPad T440p, L440 and L540
- 5200 mAh lithium-ion capacity powers long work sessions
- 8 V DC output matches original notebook specifications
- Six-cell proprietary pack fits without adapters
- Weighs 11.64 oz for easy portability
Lenovo ThinkPad Battery 57+ (6 Cell)
This Lenovo ThinkPad Battery 57+ (6 Cell) is a proprietary lithium-ion power source built for compatible Lenovo ThinkPad notebooks. It replaces OEM part numbers 0C52863, 45N1147 and 45N1145. The 5200 mAh cell count targets users who need a direct replacement for their existing battery. It fits T440p, L440 and L540 models.
Installation and system fit
The battery slides into the dedicated notebook bay without extra cables or adapters. Its 10.8 V DC output matches the original electrical specification so the system recognises it immediately. Physical dimensions of .8 inch height, 8.1 inch width and 2 inch depth align with the factory chassis cut-out. Approximate weight of 11.64 oz keeps the laptop balance unchanged.
Capacity and runtime envelope
Rated at 5200 mAh, the pack delivers typical full-day office workloads on a single charge. Heavy multi-tasking or sustained high brightness will drain it faster. The lithium-ion chemistry supports repeated recharge cycles without memory effect. It is not suited for users who require extended off-grid operation beyond standard business hours.
Highlights
- Genuine Lenovo replacement for ThinkPad T440p, L440 and L540
- 5200 mAh lithium-ion capacity powers long work sessions
- 8 V DC output matches original notebook specifications
- Six-cell proprietary pack fits without adapters
- Weighs 11.64 oz for easy portability
Specifications
| Brand | Lenovo |
|---|---|
| Electrical Outlet Plug Type | Battery |
| Shipping weight | 0.91 kg |
| Package size | 305 × 102 × 76 mm |
Questions about this item
How long does the 5200 mAh capacity last under sustained use?
The 5200 mAh Lithium Ion battery delivers 10.8 V DC output for extended notebook operation.
Does the battery generate noticeable heat during all-day operation?
Lithium Ion chemistry runs efficiently at 10.8 V DC with minimal thermal output.
Which ThinkPad models is the 45N1149 compatible with?
It fits T440p, L440 and L540 notebooks and replaces OEM parts 0C52863, 45N1147 and 45N1145.
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