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Rectangular black lithium-ion laptop battery, 70Wh capacity

Beisite

Beisite L18L4PF0 L18M4PF5 70Wh laptop battery

SKU CH-4PFS-3FH7K

70 Wh lithium-ion replacement battery for Lenovo IdeaPad S540-15IWL and S540-15IML series laptops

  • Battery typeLithium-Ion
  • Battery voltage rating15.12 V / 15.2 V
  • Battery capacity70 Wh
  • Product colorBlack
  • Product typeBattery
  • Compatible withFor IdeaPad S540-15IWL S540-15IML Series
  • 70Wh capacity powers extended work sessions
  • Lithium-ion chemistry delivers reliable recharge cycles
  • 12V or 15.2V voltage matches original spec
  • Direct replacement for multiple Lenovo part numbers
  • Fits IdeaPad S540-15IWL and S540-15IML series

Replacement Battery for IdeaPad S540 Series

This 70Wh lithium-ion battery replaces the original Lenovo cells in IdeaPad S540-15IWL and S540-15IML models. It matches part numbers L18L4PF0, L18M4PF5 and 41CP/6/55/90. The unit ships new in black and carries a 12-month warranty.

70Wh Capacity and Dual-Voltage Operation

Rated at 70Wh, the pack delivers 15.12V or 15.2V depending on the variant supplied; both versions are interchangeable. It restores full runtime for daily office work, media playback and light multitasking. Heavy workloads such as sustained rendering or gaming will deplete the charge faster than light use.

Direct Swap for Worn Original Cells

The battery fits the listed S540 chassis without modification and replaces OEM part numbers SB10W67370, 5B10T09088 and 5B10W67275. It is not suitable for laptops outside the IdeaPad S540-15IWL and S540-15IML families or for users needing higher-capacity packs.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $45.99
Pricier than about 78% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameL18L4PF0 L18M4PF5
Model nameL18L4PF0 L18M4PF5
Part number41CP/6/55/90
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion
Battery voltage rating15.12 V / 15.2 V
Battery capacity70 Wh
Compatibility
Compatible withFor IdeaPad S540-15IWL S540-15IML Series

Questions about this item

Will this 15.12V / 15.2V battery fit the IdeaPad S540-15IWL I already own?

Yes, the battery is listed as compatible with the IdeaPad S540-15IWL series including models 81NE, 81Q1, 81SW and specific sub-models such as 81NE0023UK and 81SW0015GE.

How can I confirm the 70Wh battery is charging correctly after I install it?

After installation, the Lenovo Vantage app or the system battery icon should show the cell accepting charge and report a design capacity close to 70Wh once calibrated.

Does the package include any tools or cables, or is it only the battery itself?

The package includes one battery only; no screwdrivers, opening tools or additional cables are supplied.

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