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Black rectangular laptop battery pack with label showing 15.4V 55.67Wh 4-cell

FOCUSTEC

FOCUSTEC MB04XL 15.4V 55.67Wh 4-Cell laptop battery

SKU CH-EHHH-KNH4J

A 15.4 V lithium-ion replacement battery rated at 55.67 Wh and 4 cells, compatible with HP Envy X360 convertible M6-AQ and 15-AQ series laptops

  • Battery TypeLithium-Ion
  • Reliable power for HP Envy X360 convertible laptops with 15.4V 55.67Wh capacity
  • Extended runtime from four lithium-ion cells delivering 55.67 watt-hours
  • Long service life rated for up to 500 recharge cycles
  • Direct replacement for HP part numbers 843538-541 and 844204-850
  • Broad compatibility across HP Envy X360 M6-AQ and 15-AQ series models

Replacement Battery for HP Envy X360 Convertible

This 15.4V lithium-ion battery replaces the original MB04XL pack in HP Envy X360 Convertible M6-AQ and 15-AQ series laptops. It delivers 55.67Wh across four cells and is supplied new from the manufacturer. The unit suits owners of compatible models needing a direct swap for a worn or failed original battery.

No Bundled Accessories or Software Included

The package contains only the battery itself; no tools, cables, installation guides or diagnostic utilities are provided. Buyers must reuse existing hardware and follow the laptop maker's own replacement instructions. This means the practical experience depends entirely on the user's familiarity with internal notebook servicing.

Limited to 500 Recharge Cycles Under Standard Use

The manufacturer rates the pack for up to 500 full charge cycles over its service life, after which capacity will degrade noticeably. Runtime per charge varies with workload, screen brightness, power-management settings and ambient temperature, so exact endurance cannot be guaranteed. The battery is not designed for user-serviceable cell replacement or chemistry modification.

Highlights

  • Reliable power for HP Envy X360 convertible laptops with 15.4V 55.67Wh capacity
  • Extended runtime from four lithium-ion cells delivering 55.67 watt-hours
  • Long service life rated for up to 500 recharge cycles
  • Direct replacement for HP part numbers 843538-541 and 844204-850
  • Broad compatibility across HP Envy X360 M6-AQ and 15-AQ series models

Specifications

Battery TypeLithium-Ion

Questions about this item

How many recharge cycles can the 4-cell 55.67Wh lithium-ion battery deliver before it needs replacing?

The battery is rated for up to 500 recharge cycles over its lifetime.

What is the first limit reached during sustained use of this 15.4V replacement pack?

The cycle-life limit of 500 full charges is the primary endurance constraint.

Does the MB04XL generate noticeable heat or noise when running all day in an HP Envy X360?

As a passive lithium-ion pack it has no moving parts and produces no audible noise; warmth will match normal battery operation.

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