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Rectangular black lithium-ion battery pack for Dell Inspiron 7590 7591 7791 2-in-1

DELL

DELL 51Wh 11.4V 3-Cell Laptop Battery Inspiron 7590 7591 7791 2-in-1

SKU CH-KNX1-3PCZN

51 Wh lithium-ion replacement battery for Dell Inspiron 7590, 7591 and 7791 2-in-1 models

  • CompatibilityCompatible with Dell Inspiron 7590 2-in-1 7591 2-in-1 7791 2
  • Battery TypeLithium-Ion
  • 51 Wh capacity extends runtime between charges
  • 4 V lithium-ion chemistry matches original spec
  • 3-cell premium build delivers reliable daily power
  • Fits Inspiron 7590 7591 7791 2-in-1 models exactly
  • CE and RoHS certified for safety compliance

Battery for Inspiron 2-in-1 models

This 51Wh lithium-ion replacement battery fits Dell Inspiron 7590 2-in-1 7591 2-in-1 and 7791 2-in-1 series laptops. It is a new component designed for owners whose original pack no longer holds sufficient charge. Three cells deliver 11.4 volts of nominal voltage. The product carries CE and RoHS certification.

Installation and system impact

The pack slots directly into the laptop’s internal battery bay without adapters or cable changes. Replacing a depleted unit restores full mobile operation and removes reliance on constant mains power. No BIOS update or driver installation is required for the battery to be recognised by the system.

Thermals and power behaviour

Lithium-ion chemistry maintains stable output across typical workloads with minimal self-heating. The cell pack operates silently because it has no moving parts. Power draw follows the laptop’s own management profile so the battery does not impose additional load on the chassis cooling system.

Highlights

  • 51 Wh capacity extends runtime between charges
  • 4 V lithium-ion chemistry matches original spec
  • 3-cell premium build delivers reliable daily power
  • Fits Inspiron 7590 7591 7791 2-in-1 models exactly
  • CE and RoHS certified for safety compliance

Specifications

CompatibilityCompatible with Dell Inspiron 7590 2-in-1 7591 2-in-1 7791 2-in-1 Series
Battery TypeLithium-Ion

Questions about this item

How many watt-hours does the 51Wh battery deliver before it needs recharging under sustained load?

The battery is rated at 51Wh, so sustained use will draw from that capacity until a recharge is required.

Does the 3-cell lithium-ion pack run hot or loud when the laptop is used all day?

The pack has no moving parts and produces no audible noise; heat output depends on the laptop's own thermal design rather than the battery itself.

Which exact Dell models must I already own for this 11.4V battery to fit?

It fits the Inspiron 7590 2-in-1, 7591 2-in-1 and 7791 2-in-1 series; verify against your original battery before installing.

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