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Rectangular black lithium-ion laptop battery with three cells

HP

HP Envy X360 BN03XL L77034-005 laptop battery 51Wh

SKU CH-MWN8-9GXEA

A 51Wh lithium-ion replacement battery with three cells for HP Envy X360 laptops

  • Battery typeLithium-Ion
  • Product colorBlack
  • Product typeBattery
  • Genuine HP part ensures exact fit for Envy X360
  • 51 Wh capacity delivers extended runtime between charges
  • Lithium-ion chemistry provides reliable rechargeable performance
  • Three-cell design balances power and lightweight portability
  • Black finish matches original laptop aesthetics

Genuine HP Envy X360 Replacement Battery

This new genuine HP battery is built for the Envy X360 convertible laptop and carries part numbers BN03XL and L77034-005. It uses a three-cell lithium-ion design rated at 51 Wh to restore original run time. The pack ships in black and matches the factory voltage specification.

Suits owners needing a direct factory replacement

It fits users who want an exact OEM swap without adapting cables or brackets. Buyers whose laptop requires a different cell count, capacity or voltage should look at another part. Shoppers seeking a higher-capacity upgrade or a third-party alternative will not find that here.

Three-Cell 51 Wh Lithium-Ion Configuration

The three-cell 51 Wh lithium-ion construction is the single specification that confirms fit and run-time parity with the original pack. Verify that your service manual lists BN03XL or L77034-005 before ordering.

How it compares

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

Price $26.99
Cheaper than about 58% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameHP
Model nameEnvy X360
Part numberL77034-005
Product colorBlack
Product typeBattery
Power
Battery typeLithium-Ion

Questions about this item

How long will the 51 Wh capacity typically last on a full charge in an Envy X360?

Runtime depends on your workload, screen brightness and power settings, but a 51 Wh pack generally delivers several hours of mixed use before needing a recharge.

What connector standard does the BN03XL use to attach to the motherboard?

It uses the proprietary HP multi-pin connector designed for the Envy X360 series, ensuring a direct fit without adapters.

Will the 3-cell black pack fit the internal battery bay of my Envy X360 without modification?

Yes, the BN03XL is built to the exact dimensions of the original battery, so it slots into the standard bay and secures with the existing screws.

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