2-power 2P-5B10K10199 - Acumulator

This 2-POWER battery stands out by matching the exact electrical profile of Lenovo's original 45N1124 series, but with a fresh 6-cell Li-Ion core that restores full runtime to ageing ThinkPads. Instead of carrying a bulky spare or staying tethered to an outlet, you get a dependable 48Wh pack that slots into the same bay and communicates correctly with the laptop's power management.

Highlights

• 10.8V nominal voltage and 4400mAh capacity, identical to OEM specifications
• 48Wh energy rating for balanced weight and endurance
• 6-cell lithium-ion construction with integrated overcharge, over-discharge, overcurrent, and short-circuit protection
• Black external form factor, compatible with a wide range of Lenovo ThinkPad models
• Replaces Lenovo part numbers 0C52861, 0C52862, 45N1124 through 45N1135, 45N1734, 45N1736, 45N1737, 45N1738, 45N1777, 45N1778, 45N1779, 45N1780

In daily use

Whether you are upgrading an older ThinkPad or keeping a fleet in service, this battery delivers consistent performance. It is a direct drop-in replacement for the original pack, so no software configuration is needed. The built-in protection circuits guard against common failure modes, extending the life of the battery and protecting your laptop.

Full specifications

• Brand: 2-POWER
• Model: 2P-5B10K10199
• MPN: 2P-5B10K10199
• Product type: Replacement Laptop Battery
• Battery technology: Lithium-Ion (Li-Ion)
• Number of cells: 6
• Voltage: 10.8 V
• Capacity: 4400 mAh
• Energy: 48 Wh
• Colour: Black
• Form factor: External
• Condition: New
• Brand compatibility: Lenovo
• Compatible series: ThinkPad L-Series, P-Series, T-Series, W-Series, X-Series
• Compatible models: L450, L460, L470, P50s, T440, T440s, T450, T450s, T460, T460p, T470, T550, T560, W550s, X240, X250, X260, X270
• Replaces OEM part numbers: 0C52861, 0C52862, 45N1124, 45N1125, 45N1126, 45N1127, 45N1128, 45N1129, 45N1130, 45N1131, 45N1132, 45N1133, 45N1134, 45N1135, 45N1734, 45N1736, 45N1737, 45N1738, 45N1777, 45N1778, 45N1779, 45N1780
• Safety features: Overcharge protection, over-discharge protection, overcurrent protection, short-circuit protection

Final note

For anyone who needs a reliable, cost-effective way to keep a Lenovo ThinkPad running away from the mains, this 2-POWER battery offers the right balance of capacity, safety, and compatibility.