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Black rectangular lithium-ion laptop battery with connector and label showing 76Wh 15.36V 15.4V

Beisite

Beisite L17C4PG2 L17M4PG2 laptop battery 76Wh 15.36V 15.4V for Legion Y730-17 Y740-17

SKU CH-RM6X-2S1YY

76 Wh lithium-ion replacement battery at 15.36 V for Legion Y730-17 and Y740-17 series laptops

  • ColorBlack
  • TypeBattery
  • Compatibilityfor Legion Y730-17ICH Y740-17ICH 17IRH
  • Battery TypeLithium-Ion
  • Battery Voltage15.36V / 15.4V
  • Battery Capacity76Wh
  • 76Wh capacity powers extended gaming sessions on Legion Y730-17 and Y740-17
  • 36V or 15.4V dual-voltage design fits L17C4PG2 and L17M4PG2 part numbers
  • Replaces 10 original Lenovo part numbers including 5B10Q88558 and 4ICP6/54/90
  • Lithium-ion chemistry delivers reliable cycles for 17-inch Legion models
  • New condition with 12-month warranty for peace of mind

Compatible replacement for Legion 17-inch laptops

This lithium-ion battery replaces multiple original part numbers across the Legion Y730-17 and Y740-17 series. It is intended for owners of those models who need a new 76Wh power source when the original cell no longer holds charge. Buyers with other laptop lines or smaller chassis sizes cannot use this pack.

Physical integration and daily handling

The black pack fits the internal battery bay of the listed 17-inch Legion models and connects through the existing motherboard header. No extra cables or mounting hardware are required beyond what the laptop already provides. The unit ships as a single battery without tools or adapters.

Thermal behaviour and power delivery

Rated at 15.36V or 15.4V and 76Wh, the cell supplies the same voltage and capacity the factory battery provided. Under normal workloads it runs at typical lithium-ion temperatures and produces no audible noise. The 12-month warranty period covers defects in materials and workmanship.

Highlights

  • 76Wh capacity powers extended gaming sessions on Legion Y730-17 and Y740-17
  • 36V or 15.4V dual-voltage design fits L17C4PG2 and L17M4PG2 part numbers
  • Replaces 10 original Lenovo part numbers including 5B10Q88558 and 4ICP6/54/90
  • Lithium-ion chemistry delivers reliable cycles for 17-inch Legion models
  • New condition with 12-month warranty for peace of mind

Specifications

BrandL17C4PG2 L17M4PG2
ModelL17C4PG2 L17M4PG2
Part Number4ICP6/54/90
ColorBlack
TypeBattery
Compatibilityfor Legion Y730-17ICH Y740-17ICH 17IRH
Battery TypeLithium-Ion
Battery Voltage15.36V / 15.4V
Battery Capacity76Wh

Questions about this item

What voltage range does the 15.36V / 15.4V battery support in the Legion Y730-17?

The battery operates at 15.36V or 15.4V; both L17C4PG2 and L17M4PG2 variants are interchangeable despite the slight voltage difference.

Which part numbers confirm this 76Wh pack fits my 17-inch Legion chassis?

It replaces L17C4PG2, L17L4PG2, L17M4PG2, L17S4PG2, 5B10Q88558, 5B10Q88556, L18C4PG1, 5B10T11520, 928QA224H and 4ICP6/54/90.

What is the first step when installing this battery in a Y740-17ICH?

Power off the laptop, disconnect the AC adapter, then remove the bottom case screws before unplugging the old battery connector.

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