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Rectangular black Li-ion laptop battery with connector plug

KingSener

KingSener L21M4PH2 laptop battery 76Wh 4947mAh 15.36V

SKU CH-KSWR-80S6K MPN L21M4PH2

76Wh lithium-ion replacement battery delivering 4947mAh at 15.36V for compatible Lenovo IdeaPad models

  • Battery voltage rating15.36 V
  • Battery capacity4,947 mAh/76 Wh
  • 76 Wh capacity supports longer unplugged sessions
  • 4947 mAh rating matches original design specification
  • 36 V output aligns with Lenovo IdeaPad 5-15IAL7 requirements
  • Li-ion cells deliver stable power throughout discharge cycle
  • 100 % new battery fits without modification needed

Replacement battery for Lenovo IdeaPad 5-15IAL7

The KingSener L21M4PH2 is a 76Wh lithium-ion pack rated at 15.36V and 4947mAh. It replaces original Lenovo part numbers including SB11F48153 and 5B11F48161. The unit is built for owners of the IdeaPad 5-15IAL7 series who need a direct swap for a worn or failed original battery.

Installation notes and common pitfalls

The battery matches the original dimensions so it fits the existing bay without modification. Before fitting, verify the part number on your old battery against the long compatibility list supplied. A frequent error is connecting the charger continuously while the pack is in use; the supplier warns this can damage the cells. Also avoid storing the pack in hot or humid conditions.

Practical limits of the 76Wh Li-ion pack

Capacity will not exceed the 76Wh design rating and the supplier states the full charge capacity is not less than that figure. For long-term storage, charge above 80 percent at least once a month. Do not disassemble, crush, puncture, or expose the pack to fire or water. The chemistry is standard Li-ion, so runtime scales with the 76Wh capacity under normal loads.

How it compares

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

Price $35.99
Pricier than about 64% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameKingSener
Model nameL21M4PH2
Part numberL21C4PH2
SB11F48160
5B11F48159
SB11N51723
5B11N51755
L21L4PH2
SB11F48157
5B11F48155
SB11N51717
5B11N51730
L21M4PH2
SB11F48153
5B11F48161
SB11N51722
5B11N51733
Power
Battery voltage rating15.36 V
Battery capacity4,947 mAh/76 Wh

Questions about this item

How can I verify the KingSener L21M4PH2 is working correctly after installation?

After fitting the battery, charge it fully then run it down to low level two or three times; the operating system should report a full-charge capacity at or above the 76 Wh design rating.

What comes with the KingSener L21M4PH2 and what must I source separately?

The package contains the 4947 mAh 15.36 V Li-ion battery only; no tools, screws or AC adapter are included.

Which part-number variant should I choose for my Lenovo IdeaPad 5-15IAL7?

Match the code printed on your original battery — SB11F48153, 5B11F48161 or SB11N51722 — to the L21M4PH2 listing to ensure the correct fit.

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