Lenovo 5B10W51855 sisäinen 4-kennoinen 54,7Wh Li-Ion akku ThinkPad L14/L15 Gen 2/3

When your ThinkPad L14 or L15 starts losing charge too quickly, this Lenovo 4-cell 54.7Wh battery restores full mobility. It fits the L14 Gen 2, L15 Gen 2, L14 Gen 3, and L15 Gen 3 series, and installs inside the laptop chassis.

Key specifications

• Battery type: Lithium-Ion (Li-ion)
• Number of cells: 4
• Capacity: 54.7 Wh
• Voltage: 11.52 V
• Capacity: 4750 mAh / 4.75 Ah
• FRU part number: 5B10W51855
• Colour: Black
• Rechargeable: Yes

Why choose it

It is a direct replacement for the original battery in supported ThinkPad models, with the same 54.7Wh capacity and 11.52V output. The 4-cell Li-ion chemistry provides a balance of weight and runtime.

Ideal use cases

• Replacing a worn-out battery in a ThinkPad L14 Gen 2 or L15 Gen 2
• Upgrading to a fresh battery for a ThinkPad L14 Gen 3 or L15 Gen 3
• Keeping a spare battery for long work sessions away from power outlets

Good to know

Installation is internal and requires opening the laptop case. If you are not comfortable with laptop disassembly, have a qualified technician perform the replacement.