HP BN03XL Replacement Battery
- Brand:
- HP
- Capacity Wh:
- 51 Wh
- Nominal Voltage:
- 11.55 V
- Expected Firmware State:
- full_function
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Manufacturer: HP Last updated: 2026-09-28
HP BN03XL Replacement Battery Review
HP BN03XL replacement battery (HP spare L77034-005), the OEM 3-cell 51Wh 11.55V Li-ion pack in the HP ENVY x360 13-ay0xxx and ENVY x360 15-ed0xxx and 15-ee0xxx convertibles.
HP's 2020 service guides for the AMD ENVY x360 13 (13-ay0xxx) and ENVY x360 15 (15-ee0xxx) both list spare L77034-005, a 3-cell 51Wh 4.45Ah pack with its cable. The Intel ENVY x360 15-ed0xxx shares the 15-ee0xxx chassis and HP's part locator covers both models together. Later ENVY x360 13 and 15 models (13-ba, 13-bd, 15-eu, 15-es) and the Pavilion 14-eh0xxx are listed as fitting by parts sellers, not by an HP guide we checked, so match the BN03XL code on your old pack first.
What to check before you buy
Look for BN03XL or L77034-005 on the label of your current battery. HP's service guides list the pack as an internal part under the bottom cover, so plan to open the chassis.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- HP ENVY x360 13-ay0xxx and ENVY x360 15-ed0xxx or 15-ee0xxx owners replacing a worn pack
Not for
- ENVY x360 15-ds0xxx (uses spare L43267-005) and 15-cp0xxx (uses spare L09281-855)
Specifications
What these specs mean| Brand | HP |
|---|---|
| Battery Model Code | BN03XL |
| OEM Spare Part Number | L77034-005 |
| Nominal Voltage | 11.55 V |
| Cell Count | 3 |
| Series Configuration | 3S |
| Capacity Wh | 51 Wh |
| Capacity mAh | 4450 mAh |
| Capacity Basis | OEM Label |
| Expected Firmware State | full_function |
| Shipping Classification | UN3481 |
| Compatible Models | HP ENVY x360 13-ay0xxx (13z-ay000), HP ENVY x360 15-ee0xxx (15m-ee0xxx), HP ENVY x360 15-ed0xxx (15m-ed0xxx), HP ENVY x360 13-ba, 13-bd, 15-eu, 15-es, HP Pavilion 14-eh0xxx |
| Replaces Part Numbers | L77034-005, L76965-271, L76965-2C1, L76965-AC1, L73965-271, L76985-271, HSTNN-DB9N, HSTNN-OB1O |