Lenovo 52.5Wh Lithium-Ion Internal Battery (5B10W51906)

With a 52.5 Wh energy capacity and 3-cell lithium-ion chemistry, this internal battery delivers dependable power for select Lenovo ThinkPad laptops. The 11.25 V nominal voltage and 4667 mAh current capacity ensure consistent performance during daily workloads.

Overview

Built for Lenovo ThinkPad E14 Gen 2, E15 Gen 2, L14 Gen 2, and L15 Gen 2, this internal battery integrates seamlessly into the laptop chassis. Its black design matches the original component, and the rechargeable lithium-ion cells provide long-term reliability.

What stands out

• 52.5 Wh capacity for extended runtime
• 3-cell lithium-ion construction
• Overcharge, over-discharge, and short-circuit protection
• Compatible with multiple ThinkPad models

Technical details

• Battery Type: Lithium-Ion (Li-ion)
• Energy Capacity: 52.5 Wh
• Number of Cells: 3-cell
• Nominal Voltage: 11.25 V
• Current Capacity: 4667 mAh
• Product Type: Laptop Internal Battery
• Rechargeable: Yes
• Color: Black
• Installation Type: Internal
• Safety Features: Overcharge Protection, Over-discharge Protection, Short-circuit Protection
• Manufacturer Part Number (MPN): 5B10W51906
• Field Replaceable Unit (FRU): 5B10W51906

Our verdict

A reliable replacement battery that restores your ThinkPad's mobility with the correct voltage and capacity for optimal performance.