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Rectangular black HP lithium-ion laptop battery, four cells, 15.4V 70W

HP

HP 15.4V 70W 4-Cell Lithium-Ion Battery 917678/917724

SKU CH-0P3D-HMZH3

A 15.4 V, 70 Wh lithium-ion pack with four cells replaces HP part numbers 917678 and 917724

  • CompatibilityCompatible with HP 917678-2B1 917724-855 917724-856 917678-1
  • Battery TypeLithium-Ion
  • 70 W capacity extends runtime between charges
  • 4 V rating matches original HP specifications
  • 4-cell lithium-ion design balances weight and endurance
  • CE and RoHS certified for safety and environmental compliance
  • 100 % compatible with HP 917678 and 917724 series batteries

15.4V 70W HP Laptop Battery

This 15.4 V lithium-ion battery delivers 70 W of capacity across four premium cells. It is built as a direct replacement for HP part numbers 917678-2B1, 917678-1B1, 917724-855 and 917724-856. The unit is new and carries CE and RoHS certification for safety and environmental compliance. A one-year replacement warranty covers defects in materials or workmanship.

For HP owners needing a 70W replacement

This battery suits users whose HP laptop requires a 15.4 V, 70 W, four-cell pack matching the listed part numbers. It restores original runtime for daily work, streaming and general use. Buyers whose device calls for a different voltage, a higher or lower watt-hour rating, or a different cell count should look at other options. Compatibility is limited to the specific HP models referenced in the part-number list.

70W capacity decides fit

The single specification that determines whether this is the correct part is the 70 W capacity at 15.4 V in a four-cell lithium-ion form factor. If the original battery shows a different watt-hour value or voltage, this unit will not match the laptop's power requirements. Verify the 70 W rating on your existing battery or in the service manual before purchasing.

Highlights

  • 70 W capacity extends runtime between charges
  • 4 V rating matches original HP specifications
  • 4-cell lithium-ion design balances weight and endurance
  • CE and RoHS certified for safety and environmental compliance
  • 100 % compatible with HP 917678 and 917724 series batteries

Specifications

CompatibilityCompatible with HP 917678-2B1 917724-855 917724-856 917678-1B1
Battery TypeLithium-Ion

Questions about this item

How is the 15.4V 70W 4-cell battery installed and what step is often missed?

Power off the laptop, disconnect the AC adapter, remove the old pack, align the new 917678/917724 unit with the compartment rails, press firmly until the latch clicks, then reconnect the charger and allow a full charge before first use.

What maintenance or replacement will the 917678/917724 battery need later?

The lithium-ion pack requires no scheduled maintenance; capacity will gradually decline over many charge cycles and the battery should be replaced once run-time no longer meets your needs.

What limit appears first on the 15.4V 70W pack during sustained heavy use?

Under continuous high load the cells reach their thermal ceiling first, triggering the built-in protection circuit to throttle output until the pack cools.

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