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Rectangular black lithium-ion laptop battery pack

Beisite

Beisite WF04XL 66.52Wh 7.7V laptop battery

SKU CH-6FK7-1ARRJ

A 7.7V 66.52Wh lithium-ion replacement battery for HP Envy x360 13-BF series laptops

  • ColorBlack
  • TypeBattery
  • Compatibilityfor Envy 13" 13-BF 13-BF0013DX BF0131TU BF0740NZ BF0505NA 13
  • Battery TypeLithium-Ion
  • Battery Voltage7.7V
  • Battery Capacity66.52Wh
  • 52Wh capacity powers Envy 13-BF series for extended use
  • 7V lithium-ion chemistry matches original voltage for safe operation
  • Replaces WF04XL, M90073-005 and other OEM part numbers directly
  • Fits X360 13-BF0000 through 13-BF0003 model families
  • Brand-new condition with 12-month warranty coverage

Compatible replacement battery

The Beisite WF04XL is a lithium-ion battery built for HP Envy 13-inch and X360 13-BF series laptops. It matches the original 7.7V specification and replaces part numbers such as WF04XL, HSTNN-OB2Y and M90073-005. The black pack installs internally without modification.

Capacity and runtime headroom

Rated at 66.52Wh and 8210mAh, the cell delivers a full day of typical office work on a single charge. Heavy multi-tasking or bright-screen video will drain it faster, so users running sustained loads should keep the AC adapter handy for mid-day top-ups.

Voltage and chemistry limits

The 7.7V lithium-ion design follows the laptop's native power curve and cannot be charged by USB-C or lower-voltage sources. Capacity will gradually decline after several hundred cycles, and the pack is not serviceable once it no longer holds useful charge.

Highlights

  • 52Wh capacity powers Envy 13-BF series for extended use
  • 7V lithium-ion chemistry matches original voltage for safe operation
  • Replaces WF04XL, M90073-005 and other OEM part numbers directly
  • Fits X360 13-BF0000 through 13-BF0003 model families
  • Brand-new condition with 12-month warranty coverage

Specifications

BrandWF04XL
ModelWF04XL
Part Number21CP5/52/95-2
ColorBlack
TypeBattery
Compatibilityfor Envy 13" 13-BF 13-BF0013DX BF0131TU BF0740NZ BF0505NA 13-bf0500sa 13-bf0073tu 13-bf0108tu 13-bf0125n Series
Battery TypeLithium-Ion
Battery Voltage7.7V
Battery Capacity66.52Wh

Questions about this item

Will the WF04XL 7.7V 66.52Wh battery fit my Envy X360 13-BF0013DX without changing the original AC adapter?

Yes, it replaces part numbers M90073-005 and M89926-AC1, so the existing charger continues to work normally.

How can I confirm the new 66.52Wh battery is charging correctly after installation?

The laptop should show the charge LED lit, report 7.7V in the BIOS or OS power meter, and reach full capacity within a few hours of the first charge.

Does the WF04XL package include any tools or screws for the Envy 13-BF series swap?

Only the battery itself is supplied; you will need a small Phillips screwdriver and any case clips required by your specific 13-BF model.

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