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Rectangular black lithium-ion laptop battery, four cells, 56Wh capacity

HP

HP 7.7V 56Wh 4-Cell Laptop Battery BM04056XL BM04XL HSTNN-DB8L HSTNN-UB7L

SKU CH-XJAD-7QZ35

A 7.7V 56Wh lithium-ion 4-cell replacement battery certified to CE and RoHS standards

  • CompatibilityCompatible with HP BM04056XL BM04XL HSTNN-DB8L HSTNN-UB7L
  • Battery TypeLithium-Ion
  • 56 Wh capacity extends runtime between charges
  • 7 V lithium-ion chemistry matches original specification
  • Four premium cells deliver consistent output
  • 100 % compatibility with listed HP part numbers
  • CE and RoHS certified for safety and environmental compliance

HP 7.7V 56Wh 4-Cell Replacement Battery

This 7.7V lithium-ion battery delivers 56Wh capacity across four premium cells for compatible HP laptops. It is designed for owners of HP models using part numbers BM04056XL BM04XL HSTNN-DB8L HSTNN-UB7L who need a direct replacement. The unit is new and carries CE and RoHS certification for safety compliance. It suits users restoring original runtime without modification.

Replaces Worn or Failed Original HP Battery

The battery replaces an aged or defective factory pack when runtime has dropped or the laptop shuts down unexpectedly. The jump is worth it when the original no longer holds a useful charge through a typical work session. It restores the 56Wh capacity the system was designed for. Buyers who need a higher-capacity pack or a different voltage will not be served by this unit.

Straightforward Internal Swap with Basic Tools

Installation requires opening the laptop chassis, disconnecting the old pack and connecting this one in its place using the original cable and screw points. The 100% compatibility claim means the connector and form factor match the listed part numbers. What usually goes wrong is forgetting to disable the internal battery in BIOS before removal or leaving a screw loose, which can prevent the new pack from charging.

Highlights

  • 56 Wh capacity extends runtime between charges
  • 7 V lithium-ion chemistry matches original specification
  • Four premium cells deliver consistent output
  • 100 % compatibility with listed HP part numbers
  • CE and RoHS certified for safety and environmental compliance

Specifications

CompatibilityCompatible with HP BM04056XL BM04XL HSTNN-DB8L HSTNN-UB7L
Battery TypeLithium-Ion

Questions about this item

Will the 4-cell 56Wh battery fit my HP laptop that uses the BM04XL or HSTNN-DB8L part number?

Yes, this 7.7V 56Wh pack is listed as 100% compatible with HP part numbers BM04056XL, BM04XL, HSTNN-DB8L and HSTNN-UB7L, so it matches the original form factor and connector.

What is the correct way to install this lithium-ion battery and what step do people often miss?

Power off the laptop, disconnect the AC adapter, remove the old pack, align the new 4-cell battery with the bay rails, press firmly until the latch clicks, then reconnect power and let it charge to 100% before first use — skipping the full initial charge is the common mistake.

How long will this 56Wh battery last before I need a replacement?

The lithium-ion cells are engineered for long-term reliability and carry a one-year replacement warranty; typical lifespan depends on charge cycles and usage patterns, but the pack is built to maintain consistent performance over extended daily use.

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