HP HT03XL Replacement Battery
- Brand:
- HP
- Capacity Wh:
- 41.9 Wh
- Nominal Voltage:
- 11.55 V
- Expected Firmware State:
- full_function
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Manufacturer: HP Last updated: 2026-09-22
HP HT03XL Replacement Battery Review
HP HT03XL replacement battery, the OEM 3-cell 11.55V 41.9Wh pack HP ships in the Pavilion 14 and 15 families and the HP Notebook 15 line.
This is the factory pack, not a compatible clone, so we would expect full function and correct capacity reporting on every laptop it lists as fitting. Wh is the OEM label figure, confirmed against iFixit's teardown.
What to check before you buy
HP's Pavilion and Notebook lines reuse the HT03XL across several chassis generations, but always confirm against the Product Number on the bottom of the laptop or in PartSurfer-equivalent HP support lookup rather than the marketing name alone, since a 15-series machine can ship with more than one pack.
Specifications
| Brand | HP |
|---|---|
| Battery Model Code | HT03XL |
| OEM Spare Part Number | L11119-855, L11421-1C1, L11421-2C1, L11421-2C2, L11421-423, L11421-544, L11421-545, HSTNN-DB8R, HSTNN-DB8S, HSTNN-IB80, HSTNN-UB7J, TPN-C136 |
| Source | OEM |
| Nominal Voltage | 11.55 V |
| Cell Count | 3 |
| Series Configuration | 3S |
| Capacity Wh | 41.9 Wh |
| Capacity mAh | 3630 mAh |
| Capacity Basis | OEM Label |
| Expected Firmware State | full_function |
| Shipping Classification | UN3481 |
| Compatible Models | HP Pavilion 14-CE, 14-CF, 15-CS, 15-DA, 15-DB, 15-DW, 17-BY, 17-CA, HP Notebook 15-da, 15-db, 15q-ds, ProBook 470 G7 |
| Replaces Part Numbers | L11119-855, L11421-1C1, L11421-2C1, L11421-2C2 |
| Source URL | https://www.ifixit.com/products/hp-ht03xl-battery |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Pavilion 14/15 and HP Notebook 15 owners replacing a factory-original pack
Not for
- Any HP model not on the confirmed fitment list above