ZhanPeng
Genuine HP BN03XL Laptop Battery HSTNN-OB1
Genuine HP BN03XL Laptop Battery HSTNN-OB1
Couldn't load pickup availability
HP BN03XL Battery for ENVY x360 13-ay, 13-ba, 15-ed — 11.55V 51Wh
HP BN03XL replacement 3-cell Li-Polymer battery for ENVY x360 and ENVY 13 convertible laptops. 11.55V, 51Wh, 4195mAh. Replaces L77034-005, HSTNN-OB1O, L76965-AC1. Internal battery — installation requires opening the case.
Product Overview
This HP BN03XL battery is the internal 3-cell Li-Polymer pack for HP ENVY x360 13-ay, 13-ba, 15-ed, and 15-ee convertible laptops. 11.55V, 51Wh, 4195mAh. Replaces part numbers L77034-005, HSTNN-OB1O, L76965-AC1, L76965-271, HSTNN-DB9N. Internal battery — installation requires removing the bottom case, no external release latch.
Compatible HP ENVY Models
ENVY x360 13-ay Series
- 13-ay0000
- 13-ay0007ca
- 13-ay0055cl
- 13-ay0360ng
- 13-ay0378ng
- 13-ay0065AU
- 13-ay0009na
- 13-ay0001nc
- 13-ay0002nd
- 13-ay0075nr
- 13-ar0082au
- 13-ay0010nr
- 13-ay0021nf
- 13-ay0003nf
- 13-ay0008na
- 13-ay0004nc
- 13-ay0021nr
ENVY 13 13-ba Series
- 13-ba0010nr
- 13-ba0004nu
- 13-ba0003nu
ENVY x360 15-ed / 15-ee Series
- 15T-ED000
- 15-ed0006TX
- 15-ed0000 x360
- 15-ed0007na
- 15-ed0009TX
- 15-ee0257ng
Key Specifications
| Spec | Detail |
|---|---|
| Brand / Model | HP BN03XL |
| Part Numbers | L77034-005, HSTNN-OB1O, L76965-AC1, L76965-271, HSTNN-DB9N |
| Type | Rechargeable internal Li-Polymer battery |
| Cells | 3-cell |
| Voltage | 11.55V |
| Capacity | 4195mAh / 51Wh |
| Installation Type | Internal — requires case removal (no external release) |
Frequently Asked Questions
Q: Is the BN03XL compatible with my HP ENVY x360?
A: The BN03XL fits ENVY x360 13-ay, 13-ba, 15-ed, and 15-ee series — over 27 model numbers are listed above. Verify the code on your original battery label: BN03XL, HSTNN-OB1O, HSTNN-DB9N, L77034-005, L76965-271, or L76965-AC1. The model list is partial — additional ENVY variants with the same battery code also fit.
Q: How long does the 51Wh battery last on a charge?
A: Approximately 8-10 hours of light office use and web browsing, 6-7 hours of video playback, and 3-5 hours under heavy multitasking. The 51Wh pack matches the original HP capacity for these 13-15 inch convertibles. Battery lifespan is 300-500 charge cycles before capacity drops to 80 percent.
Q: How do I install the BN03XL internal battery?
A: 1) Shut down, unplug, hold power button 15 seconds. 2) Remove the bottom case screws (ENVY x360 typically has 4-8 Torx or Phillips screws, some hidden under rubber feet). 3) Pry the bottom case off with a plastic tool — ENVY cases use plastic clips around the edges. 4) Disconnect the battery connector from the motherboard (pull the plastic housing). 5) Remove battery screws, lift out the old pack. 6) Place the new BN03XL, secure, reconnect. 7) Reassemble the case and charge to 100% before first use.
Q: What HP part numbers does the BN03XL replace?
A: 5 part numbers: L77034-005 (primary HP spare), HSTNN-OB1O (HP internal code), L76965-AC1, L76965-271, and HSTNN-DB9N. Any of these on your original battery label confirms this replacement fits.
Q: Which HP laptops are NOT compatible with the BN03XL?
A: This battery is for ENVY x360 13-ay/13-ba/15-ed/15-ee series only. It does NOT fit older ENVY models (13-ad, 15-aq, 15-as), HP Pavilion, HP Spectre, HP EliteBook, HP ProBook, HP Omen, or HP 17-inch models. Different ENVY generations use different battery codes — always match the code on your label.
Q: Why is my ENVY showing "plugged in, not charging"?
A: Common causes: 1) HP Adaptive Battery Optimizer is limiting charge (check BIOS/MyHP app). 2) A BIOS or battery driver update is needed from support.hp.com. 3) The charging port or cable has a loose connection. 4) The battery has reached end of life — run powercfg /batteryreport in Command Prompt. If Full Charge Capacity is below 60 percent of Design Capacity (51Wh → below ~30Wh), replace the battery.
Q: How long does it take to fully charge?
A: Approximately 2-3 hours using the original HP 45W or 65W USB-C charger. HP Fast Charge-enabled ENVY models reach 50 percent in about 30 minutes. Charge to 100% before first use to calibrate the battery meter.
Q: How should I calibrate and maintain the new battery?
A: 1) Charge to 100%, keep plugged in 1 more hour. 2) Use on battery until 10-20%. 3) Recharge to 100% uninterrupted. 4) Repeat 2-3 times during the first week. For daily use, keep the battery between 20-80%. If mostly plugged in, enable Adaptive Battery Optimizer in BIOS to cap at 80% — this doubles the battery's calendar life.
Why This BN03XL Battery
51Wh Full Capacity
11.55V, 4195mAh, 3-cell Li-Polymer. Matches original HP capacity for 8-10 hours of light use.
27+ ENVY Models
x360 13-ay, 13-ba, 15-ed, 15-ee series. Replaces 5 HP part numbers including L77034-005 and HSTNN-OB1O.
Li-Polymer Design
Flat pouch cells fit the slim ENVY x360 chassis. 3-cell configuration for balanced weight.
Summary
| Battery Model | HP BN03XL |
| Voltage / Capacity | 11.55V / 4195mAh / 51Wh — 3-cell Li-Polymer |
| HP Part Numbers | L77034-005, HSTNN-OB1O, L76965-AC1, L76965-271, HSTNN-DB9N |
| Compatible | ENVY x360 13-ay, 13-ba, 15-ed, 15-ee series (27+ models) |
This is a third-party replacement product sold by ZhanPeng, operated by Changsha Liping Technology Co., Ltd. It is not manufactured by or affiliated with the original device manufacturer. All brand names, model numbers, and trademarks referenced are the property of their respective owners and are used solely to indicate product compatibility. ZhanPeng is an independent retailer and is not sponsored, authorized, or otherwise connected with the original equipment manufacturer.