HP Pavilion 15 and HP 17-series laptops are designed for everyday work, study and entertainment.
But when the battery can no longer hold a proper charge, even simple tasks become stressful:
the laptop dies in the middle of a meeting, the percentage drops suddenly from 40% to 5%, or
it shuts down as soon as you unplug the charger. If your notebook uses the
HW03XL battery, these are clear signs that the original
41.04Wh pack is reaching the end of its life.

41.04Wh HP HW03XL Replacement Battery for HP Pavilion 15-eg / 15-eh & HP 17-cn / 17-cp
Brand new 41.04Wh (3440mAh, 11.34V, 3-cell) internal battery designed for HP Pavilion 15,
HP 17-cn / 17-cp series and selected HP 250 / 255 / 470 G-series laptops, replacing
HW03XL and related HP part numbers such as HSTNN-IB90 and L96887-271.
Need a different HP battery? Browse our
Battery for HP
category to find the correct pack for your model.
This guide looks at the real-world symptoms of a failing HP HW03XL battery,
how to confirm that the battery (not the charger or Windows) is the main issue, and what to
check before ordering a replacement for your HP Pavilion 15-eg / 15-eh or HP 17-cn / 17-cp
series laptop.
Quick navigation
- 1. Common symptoms of a failing HP HW03XL battery
- 2. How to confirm your battery is the problem
- 3. Checking HW03XL compatibility for your HP laptop
- 4. Inside the 41.04Wh HP HW03XL replacement battery
- 5. Replacement options: DIY vs professional service
- 6. How to care for your new HW03XL battery
1. Common symptoms of a failing HP HW03XL battery
Lithium-ion batteries wear out gradually over hundreds of charge cycles. They rarely fail
overnight; instead, you notice changes over weeks or months. Owners of HP 17-cn / 17-cp and
HP Pavilion 15-eg / 15-eh systems with a HW03XL battery often report:
1.1 Faster battery drain than before
- Your HP laptop used to run for several hours on browsing or office work; now it drops from 100% to 30% quickly.
- The percentage falls rapidly once it goes below 50%.
- Short tasks—like watching a video or attending an online class—consume a large chunk of the remaining charge.
This indicates that the actual usable capacity of the battery cells is much lower than the
original 41.04Wh design. Windows still tries to estimate runtime, but heavily worn cells make
those estimates unreliable.
1.2 Sudden shutdowns with charge still remaining
- The laptop powers off abruptly when Windows shows 15–30% battery remaining.
- After restarting and plugging in, the reported percentage is much lower than before the shutdown.
- Opening multiple browser tabs or running a heavier app can trigger a shutdown when the battery is low.
When one or more cells cannot maintain stable voltage under load, the battery’s protection
circuit cuts power to prevent damage. To you, it looks like a random shutdown, but it usually
means the HW03XL pack is at the end of its life.
1.3 “Plugged in, not charging” or stuck at a certain level
- Windows shows “Plugged in, not charging” even though the adapter is connected.
- The battery never charges above a certain percentage, for example 75–80%.
- The laptop works normally when plugged in, but battery runtime is very short.
Sometimes power-plan settings or a faulty charger can cause this behavior, but once those are
ruled out it often means the HW03XL controller is limiting charge due to cell wear.
1.4 Extra heat and louder fan during light tasks
- The palm rest or underside feels warmer than usual during simple tasks.
- The fan ramps up more often while you are just browsing or writing emails.
A degraded battery can generate extra heat during charging and discharging. Combined with dust
or background processes, this can make the system feel hotter and noisier than when it was new.
1.5 Battery health warnings
- Windows battery report or HP diagnostics show “poor” or “very poor” battery health.
- There is a large difference between Design Capacity and Full Charge Capacity.
These warnings usually appear after you already notice fast drain and unstable percentages. They
simply confirm that your HW03XL pack has lost a significant amount of its original capacity.
2. How to confirm your battery is the problem
Before ordering a new HP HW03XL replacement battery, it’s smart to confirm that
the issue is the battery itself—not the charger, operating system or a background process.
2.1 Check the power adapter and port
- Use the original HP charger designed for your Pavilion or HP 17 model.
- Inspect the cable and plug for damage, kinks or discoloration.
- Check that the charging LED behaves normally when you plug the adapter in.
If a known-good adapter doesn’t improve charging or runtime, the problem is more likely inside
the battery pack than in the charger.
2.2 Generate a Windows battery report
On Windows 10/11, you can use the built-in battery report:
- Open Command Prompt as Administrator.
- Type
powercfg /batteryreportand press Enter. - Open the generated HTML file from your user folder.
Compare Design Capacity with Full Charge Capacity.
If full charge capacity is much lower than the original 41.04Wh, your battery has
experienced significant wear.
2.3 Use HP diagnostics and BIOS information
- Run HP diagnostics tools (if available) to test the battery health.
- Check BIOS/UEFI for simple battery status or any warning flags.
When both diagnostics and everyday symptoms point to poor battery health, replacing the
HW03XL is usually the most reliable fix.
3. Checking HW03XL compatibility for your HP laptop
HP uses several different internal batteries across Pavilion and 17-inch models. To avoid
ordering the wrong one, you should match both the battery part number and
your laptop model series.
3.1 Compatible part numbers (selection)
This 41.04Wh replacement battery is designed to work with packs labeled, for example:
- HP HW03XL / HW03041XL
- HP HSTNN-IB90
- HP HSTNN-DB9Y
- HP L96887-271 / L96887-421
- HP L97300-005
- HP TPN-DB1D / TPN-DB9Y
You will generally find one of these codes printed directly on your original battery pack
once the bottom cover is removed.
3.2 Compatible HP model series (partial list)
HP 17-cn / 17-cp series
- HP 17-cn0000 / 17-cn1000 / 17-cn2000 / 17-cn3000 / 17-cn4000
- HP 17-cp0000 / 17-cp1000 / 17-cp2000 / 17-cp3000
HP 250 / 255 / 470 G-series
- HP 250 G9
- HP 255 G8 / 255 G9
- HP 470 G8 / 470 G9 / 470 G10
HP Pavilion 15 series
- HP Pavilion 15-eg0000 / 15-eg1000 / 15-eg2000 / 15-eg3000
- HP Pavilion 15-eh0000 / 15-eh1000 / 15-eh2000 / 15-eh3000
If your laptop is listed in these series and the original battery shows HW03XL or one of
the compatible part numbers above, the
41.04Wh HP HW03XL replacement battery
is designed for your machine. Otherwise, you can find alternative HP packs in our
Battery for HP
category.
Check compatibility and order the 41.04Wh HP HW03XL battery
4. Inside the 41.04Wh HP HW03XL replacement battery
The HW03XL is a compact, 3-cell lithium-ion pack designed for 11.34V HP systems. Matching
voltage and capacity is important to keep your laptop stable, safe and efficient.
4.1 Key specifications
| Item | Specification |
|---|---|
| Condition | Brand New replacement battery |
| Color | Black |
| Capacity | 3440mAh / 41.04Wh |
| Voltage | 11.34V |
| Number of cells | 3-cell lithium-ion pack |
| Warranty | 12-month warranty with 30-day return policy |
| Package includes | 1 × battery for HP (HW03XL) |
Quality replacements also integrate protection against over-charge, over-discharge,
short-circuit and abnormal temperature, helping to protect both the battery and your
motherboard.
5. Replacement options: DIY vs professional service
Many HP Pavilion 15 and HP 17 models with an HW03XL pack have a removable bottom cover
secured with screws. Replacing the battery is realistic at home if you are comfortable
with basic tools and follow a careful process.
5.1 Typical HW03XL replacement steps
- Shut down the laptop completely and unplug the power adapter.
- Remove all screws from the bottom cover and gently lift it off (use a plastic pry tool if needed).
- Locate the HW03XL battery and disconnect its cable from the motherboard.
- Remove the screws holding the battery in place and lift the old pack out carefully.
- Position the new 41.04Wh HW03XL battery, align it correctly and secure it with screws.
- Reconnect the battery cable, reinstall the bottom cover and tighten all screws.
- Connect the charger, power on the laptop and check that Windows detects and charges the new battery.
If these steps feel risky or you are not used to opening laptops, you can order the correct
HW03XL replacement and ask a professional repair shop or local technician to install it for you.
6. How to care for your new HW03XL battery
Once your new 41.04Wh HW03XL battery is installed, a few simple habits will help you get the
longest possible life and the most stable runtime from it:
-
First few cycles: Use the laptop on battery between roughly 20% and 90%
to help the controller and Windows calibrate the new pack. -
Avoid extremes: It’s fine to reach 100% or 0% occasionally, but try not to
leave the battery fully charged or completely drained for long periods. -
Keep it cool: Use the laptop on a hard surface, keep vents clear and avoid
overheating, which accelerates battery wear. -
Store smart: If you will not use the laptop for a few weeks, store it around
40–60% charge in a cool, dry place.
With a fresh HW03XL battery and good charging habits, your HP Pavilion 15 or HP 17 can again
deliver the reliable runtime you expect—whether you are working, studying or streaming away
from the wall socket.
Replace your worn HW03XL battery and restore your HP laptop’s runtime







