HP
HP 11.1V 5200mAh 6-Cell Battery HSTNN-Q78C Q81C
Replacement lithium-ion battery delivers 11.1V and 5200mAh across six cells for compatible HP laptops
- CompatibilityCompatible with HP HSTNN-Q78C-3 HSTNN-Q78C-4 HSTNN-Q81C HSTN
- Battery TypeLithium-Ion
- Reliable power for compatible HP laptops with 11.1V lithium-ion chemistry
- Extended runtime from 5200mAh capacity for longer unplugged sessions
- Six premium cells deliver consistent performance across charge cycles
- 100% fit for HSTNN-Q78C-3, Q78C-4, Q81C, Q81C-3 and Q81C-4 models
- CE and RoHS certified for safety and environmental compliance
Replacement battery for HP HSTNN models
This 11.1V lithium-ion pack replaces HP part numbers HSTNN-Q78C and HSTNN-Q81C series batteries. It delivers 5200mAh capacity across six premium cells for extended runtime. The unit is supplied new and carries CE and RoHS certification.
Ideal for users restoring original runtime
Owners of compatible HP laptops needing a direct swap will find a 100% fit with no modification required. Buyers whose devices use a different voltage, cell count, or connector should look at other replacements. The one-year replacement warranty covers defects in materials and workmanship.
Voltage and capacity determine compatibility
The 11.1V rating and 5200mAh capacity are the critical specifications that decide whether this battery matches the original equipment. Confirm both figures against the old battery label before ordering. The six-cell lithium-ion chemistry supports long-term reliability for daily use.
Highlights
- Reliable power for compatible HP laptops with 11.1V lithium-ion chemistry
- Extended runtime from 5200mAh capacity for longer unplugged sessions
- Six premium cells deliver consistent performance across charge cycles
- 100% fit for HSTNN-Q78C-3, Q78C-4, Q81C, Q81C-3 and Q81C-4 models
- CE and RoHS certified for safety and environmental compliance
Specifications
| Compatibility | Compatible with HP HSTNN-Q78C-3 HSTNN-Q78C-4 HSTNN-Q81C HSTNN-Q81C-3 HSTNN-Q81C-4 |
|---|---|
| Battery Type | Lithium-Ion |
Questions about this item
Which HP laptops accept this 11.1V 5200mAh 6-cell battery?
It fits models using part numbers HSTNN-Q78C-3, HSTNN-Q78C-4, HSTNN-Q81C, HSTNN-Q81C-3 and HSTNN-Q81C-4.
Will the battery work with the original AC adapter that came with my HP laptop?
Yes, the lithium-ion pack charges normally from the factory-supplied adapter because it matches the 11.1V specification.
How can I confirm the battery is delivering its rated 5200mAh capacity after installation?
Run a full charge cycle, then check the reported design capacity in the BIOS or HP Support Assistant — it should read 5200mAh.
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