2-power Main Battery Pack Lenovo ThinkPad T440p - Batterie - 56 mAh (2P-45N1161)

When your Lenovo ThinkPad T440p starts losing charge faster than you can finish a meeting, it's time for a fresh power source. The 2-POWER 2P-45N1161 battery pack slots into the same bay as the original, giving you a dependable 56 watt-hours of capacity. Built with six lithium-ion cells and a 10.8 V output, it keeps your laptop running through reports, spreadsheets, and video calls without hunting for a wall outlet. The black casing matches the ThinkPad's professional look, and the built-in protection circuits guard against overcharging, over-discharging, overcurrent, and short circuits. Whether you're at a desk, in a café, or on a train, this battery restores the portability your T440p was meant to have.

Key specifications

• Battery chemistry: Lithium-Ion (Li-Ion)
• Capacity: 56 Wh (approx. 5185 mAh at 10.8 V)
• Voltage: 10.8 V
• Number of cells: 6-cell
• Compatibility: Lenovo ThinkPad T440p
• Colour: Black
• Rechargeable: Yes
• Protection: Overcharge, over-discharge, overcurrent, short circuit
• Form factor: External (removable)
• Certifications: CE, RoHS, FCC
• Warranty: 1 year
• Cycle life: Up to 500 charge/discharge cycles

Why choose it

This battery is a direct replacement for the original Lenovo part, so installation takes seconds and no software updates are needed. The 56 Wh capacity matches the standard T440p battery, delivering the same runtime you had when the laptop was new. The integrated safety features prevent damage from common power issues, extending the life of both the battery and your laptop. With a one-year warranty and a cycle life of up to 500 full charges, it offers long-term value for daily business use.

Ideal use cases

• Office workers who need all-day productivity without being tethered to a desk
• Students carrying their T440p between lectures and libraries
• Field technicians and consultants who rely on their laptop at client sites
• Anyone whose original battery has degraded and wants to avoid the cost of a new laptop

Good to know

The battery is compatible with Lenovo ThinkPad T440p models and replaces OEM part numbers 0C52862, 45N1144, 45N1145, 45N1148, 45N1149, 45N1150, and 45N1151. It is CE, RoHS, and FCC certified for safety and environmental compliance. For best results, fully charge and discharge the battery a few times after installation to calibrate the power meter.