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New Original KC04XL HSTNN‑IB8K HSTNN‑DB8P Battery Replacement for HP ENVY 13‑AH 13‑AQ 13‑AG Laptop
New Original KC04XL HSTNN‑IB8K HSTNN‑DB8P Battery Replacement for HP ENVY 13‑AH 13‑AQ 13‑AG Laptop
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New Original KC04XL Battery for HP ENVY 13‑AH / 13‑AQ / 13‑AG – Restore Your Sleek Ultrabook’s All‑Day Battery Life
Exact replacement for HP part numbers: KC04XL, HSTNN‑IB8K, HSTNN‑DB8P. Compatible with ENVY 13‑AH, 13‑AQ, 13‑AG series (and select 13‑AL models – check your original label).
You bought an HP ENVY 13 because it’s thin, light, and powerful. It fits in a bag, looks top-notch, and used to last all day in classes, meetings, or coffee shop work sessions. But after a couple of years, the battery doesn’t hold a charge like it used to. It dies when it hits 30%. It can drop from 60% to 10% in seconds. You might also see the trackpad getting stiff, which means the battery is swelling.
HP’s original KC04XL battery gave you 7–9 hours of real use when new. Now you’re lucky to get 3–4. You don’t need to pay HP’s $90+ price for a replacement. You don’t want a $25 generic. It could cause “battery not detected” errors, overheat, or even swell in six months.
This new KC04XL battery offers OEM performance and safety—without the high cost.
Quick Specs – What You’re Getting
| Specification | Value |
|---|---|
| Part Numbers | KC04XL, HSTNN‑IB8K, HSTNN‑DB8P |
| Compatible Models | HP ENVY 13‑AH (e.g., 13‑ah0051wm), 13‑AQ, 13‑AG (also some 13‑AL – check your original) |
| Replace Part Number |
KC04XL L08496-855 KC04053XL HSTNN-DB8P HSTNN-IB8K L08544-2B1 L08544-1C1 TPN-W133 TPN-W136. KC04XL HSTNN-IB8K HSTNN-DB8P KC04053XL KCO4XL L08496-855 L08544-1C1 L08544-2B1 |
| Compatible Models |
Fit for HP Envy X360 13-AG000 13z-AG000 13-AR000 13-AH000 13-AQ000 13t-AQ000 13M-AQ000 Series: 13-ah0051wm 13-ag0001la 13-AR0501SA 13-aq0044nr 13-ah1025cl 13-AQ0005NR 13-ag0006AU 13-ag0007AU 13-ag0047AU 13-ar0000AU 13-ar0097AU 13-ay0056AU 13-ah001la Notebook. for HP Envy 13 AH Series: for HP Envy x360 AG Series: |
| Typical Capacity | 53.2 Wh (watt‑hours, depending on revision) |
| Voltage | 15.4 V nominal |
| Cells | 3‑cell (high‑density) |
| Chemistry | Lithium‑ion |
| Safety Features | Over‑charge, over‑discharge, short‑circuit protection, temperature monitoring |
A healthy KC04XL battery restores your ENVY 13 to its original runtime: 7–9 hours of typical use (web browsing, Office, streaming) and 5–6 hours under heavier loads (video calls, light editing).
OEM vs. New Original Spec vs. Cheap Generic – What’s the Real Difference?
Not every battery that fits your ENVY 13 is safe or reliable. Here’s how the three options compare.
| Factor | OEM (HP) | Our New Original Spec (KC04XL) | Cheap Generic |
|---|---|---|---|
| Cell Quality | Original LG / Murata / ATL | Same OEM‑grade cells | Unknown, often recycled or low‑grade |
| True Capacity | 51–53Wh | Same as OEM | Often 30–40Wh (overstated) |
| Protection Circuit | Full PCM with temp sensor | Full PCM | Minimal – risk of swelling or fire |
| BIOS Communication | Accurate fuel gauge | Accurate – Windows shows correct % | May show wrong % or “battery not detected” |
| Physical Fit | Perfect | Perfect, same mold | Loose or too tight; weak connector |
| Charging Behavior | Supports HP Fast Charge | Supports HP Fast Charge | Slow, overheats, or stops early |
| Longevity | 400–500 cycles | 400–500 cycles | Often fails within 6–12 months |
| Price | $80–110 | $35–65 | $20–30 |
| Warranty | 1 year | 12 months | 30 days or none |
Important for ENVY 13 owners
The ENVY 13 is a thin, sealed aluminum chassis. A cheap generic battery can swell, pushing against the touchpad or even cracking the metal case. Our new original spec battery uses the same safety circuits and precise dimensions as HP’s original – no swelling, no fit issues.
3 Signs Your ENVY 13 Needs a New KC04XL Battery
-
Shuts down at 20–30% – You unplug the charger, and within minutes the screen goes black, even though Windows said you had plenty left.
-
Erratic percentage jumps – Drops from 60% to 5% instantly, or stays at 99% for an hour then dies.
-
Physical swelling – The touchpad becomes hard to click, the bottom case bulges, or the laptop no longer sits flat. Replace immediately – a swollen battery is a fire risk and can damage your keyboard, trackpad, and motherboard.
If your ENVY 13 is more than 2–3 years old and showing any of these signs, replace the battery now. It’s far cheaper than buying a new ultrabook.
Why Choose Our New Original Spec KC04XL Battery?
-
Fresh cells – Manufactured within the last 6 months. Date printed on label. No degraded shelf inventory.
-
Exact fit – Same dimensions and connector as HP original. No modifications needed.
-
HP Fast Charge compatible – Charges to 50% in about 30 minutes with a genuine HP USB‑C charger.
-
Full safety certification – CE, RoHS, UN38.3 (air transport safe).
-
12‑month warranty – If it fails within 12 months, we send a free replacement.
You don’t need to overpay HP. But you also shouldn’t trust a no‑name battery that might damage your premium laptop. Our new original spec KC04XL gives you factory quality at a fair price.
Frequently Asked Questions (FAQ)
Q: Will this battery work with my HP ENVY 13‑AH, 13‑AQ, or 13‑AG?
Yes. KC04XL is the official replacement battery for these series. Check your current battery label – if it says KC04XL, HSTNN‑IB8K, or HSTNN‑DB8P, this is the direct replacement.
Q: Can I install this battery myself?
Yes, but it requires opening the laptop. The ENVY 13 has a removable bottom cover (Phillips screws and sometimes Torx). The battery is held by a few screws and a ribbon cable connector. If you’re comfortable with small electronics repair, follow a YouTube guide (search “HP ENVY 13 battery replacement”). If not, any local repair shop can do it in 15–20 minutes. We include a screwdriver and spudger with every battery.
Q: How long does a full charge last after replacement?
7–9 hours of typical use (web, Office, streaming). Heavy tasks (video calls, light editing) reduce to 5–6 hours. You’ll get back to the original runtime when the laptop was new.
Q: Does this battery support HP Fast Charge?
Yes. When used with a genuine HP 45W or 65W USB‑C charger, it will charge to about 50% in 30 minutes. Your laptop must support Fast Charge (most ENVY 13 models do).
Q: Is this battery safe for air travel?
Yes. At under 100Wh, it’s allowed in carry‑on luggage per FAA and IATA rules. Always keep spare batteries in carry‑on, never checked, and protect terminals from shorting (use original packaging or tape).
Q: What if my laptop doesn’t recognize the battery?
First, plug in the charger and let it charge for 2 hours. Then restart. If still not recognized, check that the cable is fully seated. In rare cases, a BIOS update (available from HP Support) resets the battery controller. If none works, contact us for a replacement under warranty.
Q: Will this battery work if my ENVY 13 originally had a different part number (e.g., KC06XL)?
No. KC04XL is a specific battery for the 13‑AH/AQ/AG series. If your laptop uses KC06XL (larger capacity, different shape), this will not fit. Always check your original battery label before ordering.
Q: Do you offer discounts for multiple batteries?
Yes. For orders of 5+ batteries, contact us for a quote. We work with IT departments, repair centers, and schools.
Ready to Bring Your HP ENVY 13 Back to Ultraportable Freedom?
Don’t let a dead or swollen battery ruin your sleek, lightweight ENVY. This new original spec KC04XL replacement restores original battery life and safety – at a price that makes replacing an aging battery an easy decision.
Click ‘Add to Cart’ – and get back to working, streaming, and creating anywhere, not just near an outlet.
New Original KC04XL Battery for HP ENVY 13‑AH / 13‑AQ / 13‑AG – Restore Your Sleek Ultrabook’s All‑Day Battery Life
Exact replacement for HP part numbers: KC04XL, HSTNN‑IB8K, HSTNN‑DB8P. Compatible with ENVY 13‑AH, 13‑AQ, 13‑AG series (and select 13‑AL models – check your original label).
You bought an HP ENVY 13 because it’s thin, light, and powerful. It fits in a bag, looks top-notch, and used to last all day in classes, meetings, or coffee shop work sessions. But after a couple of years, the battery doesn’t hold a charge like it used to. It dies when it hits 30%. It can drop from 60% to 10% in seconds. You might also see the trackpad getting stiff, which means the battery is swelling.
HP’s original KC04XL battery gave you 7–9 hours of real use when new. Now you’re lucky to get 3–4. You don’t need to pay HP’s $90+ price for a replacement. You don’t want a $25 generic. It could cause “battery not detected” errors, overheat, or even swell in six months.
This new KC04XL battery offers OEM performance and safety—without the high cost.
Quick Specs – What You’re Getting
| Specification | Value |
|---|---|
| Part Numbers | KC04XL, HSTNN‑IB8K, HSTNN‑DB8P |
| Compatible Models | HP ENVY 13‑AH (e.g., 13‑ah0051wm), 13‑AQ, 13‑AG (also some 13‑AL – check your original) |
| Replace Part Number |
KC04XL L08496-855 KC04053XL HSTNN-DB8P HSTNN-IB8K L08544-2B1 L08544-1C1 TPN-W133 TPN-W136. KC04XL HSTNN-IB8K HSTNN-DB8P KC04053XL KCO4XL L08496-855 L08544-1C1 L08544-2B1 |
| Compatible Models |
Fit for HP Envy X360 13-AG000 13z-AG000 13-AR000 13-AH000 13-AQ000 13t-AQ000 13M-AQ000 Series: 13-ah0051wm 13-ag0001la 13-AR0501SA 13-aq0044nr 13-ah1025cl 13-AQ0005NR 13-ag0006AU 13-ag0007AU 13-ag0047AU 13-ar0000AU 13-ar0097AU 13-ay0056AU 13-ah001la Notebook. for HP Envy 13 AH Series: for HP Envy x360 AG Series: |
| Typical Capacity | 53.2 Wh (watt‑hours, depending on revision) |
| Voltage | 15.4 V nominal |
| Cells | 3‑cell (high‑density) |
| Chemistry | Lithium‑ion |
| Safety Features | Over‑charge, over‑discharge, short‑circuit protection, temperature monitoring |
A healthy KC04XL battery restores your ENVY 13 to its original runtime: 7–9 hours of typical use (web browsing, Office, streaming) and 5–6 hours under heavier loads (video calls, light editing).
OEM vs. New Original Spec vs. Cheap Generic – What’s the Real Difference?
Not every battery that fits your ENVY 13 is safe or reliable. Here’s how the three options compare.
| Factor | OEM (HP) | Our New Original Spec (KC04XL) | Cheap Generic |
|---|---|---|---|
| Cell Quality | Original LG / Murata / ATL | Same OEM‑grade cells | Unknown, often recycled or low‑grade |
| True Capacity | 51–53Wh | Same as OEM | Often 30–40Wh (overstated) |
| Protection Circuit | Full PCM with temp sensor | Full PCM | Minimal – risk of swelling or fire |
| BIOS Communication | Accurate fuel gauge | Accurate – Windows shows correct % | May show wrong % or “battery not detected” |
| Physical Fit | Perfect | Perfect, same mold | Loose or too tight; weak connector |
| Charging Behavior | Supports HP Fast Charge | Supports HP Fast Charge | Slow, overheats, or stops early |
| Longevity | 400–500 cycles | 400–500 cycles | Often fails within 6–12 months |
| Price | $80–110 | $35–65 | $20–30 |
| Warranty | 1 year | 12 months | 30 days or none |
Important for ENVY 13 owners
The ENVY 13 is a thin, sealed aluminum chassis. A cheap generic battery can swell, pushing against the touchpad or even cracking the metal case. Our new original spec battery uses the same safety circuits and precise dimensions as HP’s original – no swelling, no fit issues.
3 Signs Your ENVY 13 Needs a New KC04XL Battery
-
Shuts down at 20–30% – You unplug the charger, and within minutes the screen goes black, even though Windows said you had plenty left.
-
Erratic percentage jumps – Drops from 60% to 5% instantly, or stays at 99% for an hour then dies.
-
Physical swelling – The touchpad becomes hard to click, the bottom case bulges, or the laptop no longer sits flat. Replace immediately – a swollen battery is a fire risk and can damage your keyboard, trackpad, and motherboard.
If your ENVY 13 is more than 2–3 years old and showing any of these signs, replace the battery now. It’s far cheaper than buying a new ultrabook.
Why Choose Our New Original Spec KC04XL Battery?
-
Fresh cells – Manufactured within the last 6 months. Date printed on label. No degraded shelf inventory.
-
Exact fit – Same dimensions and connector as HP original. No modifications needed.
-
HP Fast Charge compatible – Charges to 50% in about 30 minutes with a genuine HP USB‑C charger.
-
Full safety certification – CE, RoHS, UN38.3 (air transport safe).
-
12‑month warranty – If it fails within 12 months, we send a free replacement.
You don’t need to overpay HP. But you also shouldn’t trust a no‑name battery that might damage your premium laptop. Our new original spec KC04XL gives you factory quality at a fair price.
Frequently Asked Questions (FAQ)
Q: Will this battery work with my HP ENVY 13‑AH, 13‑AQ, or 13‑AG?
Yes. KC04XL is the official replacement battery for these series. Check your current battery label – if it says KC04XL, HSTNN‑IB8K, or HSTNN‑DB8P, this is the direct replacement.
Q: Can I install this battery myself?
Yes, but it requires opening the laptop. The ENVY 13 has a removable bottom cover (Phillips screws and sometimes Torx). The battery is held by a few screws and a ribbon cable connector. If you’re comfortable with small electronics repair, follow a YouTube guide (search “HP ENVY 13 battery replacement”). If not, any local repair shop can do it in 15–20 minutes. We include a screwdriver and spudger with every battery.
Q: How long does a full charge last after replacement?
7–9 hours of typical use (web, Office, streaming). Heavy tasks (video calls, light editing) reduce to 5–6 hours. You’ll get back to the original runtime when the laptop was new.
Q: Does this battery support HP Fast Charge?
Yes. When used with a genuine HP 45W or 65W USB‑C charger, it will charge to about 50% in 30 minutes. Your laptop must support Fast Charge (most ENVY 13 models do).
Q: Is this battery safe for air travel?
Yes. At under 100Wh, it’s allowed in carry‑on luggage per FAA and IATA rules. Always keep spare batteries in carry‑on, never checked, and protect terminals from shorting (use original packaging or tape).
Q: What if my laptop doesn’t recognize the battery?
First, plug in the charger and let it charge for 2 hours. Then restart. If still not recognized, check that the cable is fully seated. In rare cases, a BIOS update (available from HP Support) resets the battery controller. If none works, contact us for a replacement under warranty.
Q: Will this battery work if my ENVY 13 originally had a different part number (e.g., KC06XL)?
No. KC04XL is a specific battery for the 13‑AH/AQ/AG series. If your laptop uses KC06XL (larger capacity, different shape), this will not fit. Always check your original battery label before ordering.
Q: Do you offer discounts for multiple batteries?
Yes. For orders of 5+ batteries, contact us for a quote. We work with IT departments, repair centers, and schools.
Ready to Bring Your HP ENVY 13 Back to Ultraportable Freedom?
Don’t let a dead or swollen battery ruin your sleek, lightweight ENVY. This new original spec KC04XL replacement restores original battery life and safety – at a price that makes replacing an aging battery an easy decision.
Click ‘Add to Cart’ – and get back to working, streaming, and creating anywhere, not just near an outlet.
| Battery Capacity | 53.2Wh |
| Voltage | 15.4V |
| Model No | KC04XL |
| Warranty | 12 Months |
🔋 Lithium-Ion Battery Conditioning
For optimal electrochemical performance, new lithium-ion batteries should undergo 2–3 complete charge and discharge cycles before reaching full capacity.
This stabilization phase allows the internal cell chemistry to achieve balanced ion distribution, ensuring maximum runtime, stable voltage output, and extended cycle life.
After this initial conditioning period, no further full discharge cycles are required.
🛡 Premium Warranty Protection
- 12-Month Limited Manufacturer Warranty
- 60-Day No-Hassle Money Back Guarantee
- Up to 60 Days Refund Window (Policy Based)
- Replacement for defective or misrepresented items
- Dedicated customer service response within 24 hours
🚚 Professional Shipping Standards
- Orders processed within 24 business hours (excluding weekends & holidays)
- Real-time tracking number provided upon dispatch
- Transit time varies by region and logistics carrier
- Please verify your shipping address before order confirmation
- Address changes are not possible once shipment is dispatched
📌 Product-Specific Notice
📩 Customer Care Commitment
We are committed to delivering professional-grade battery solutions and responsive after-sales service. If you experience any issues, please contact our support team before leaving feedback.
✓ Safety & Quality Assurance
- Certified to CE, RoHS, UN38.3 international safety standards.
- Built-in protection against overcharging, overheating, and short circuits.
- Shipped in compliance with IATA regulations for lithium batteries.
- Compatible with OEM chargers. No firmware modification required.
Questions about compatibility? Contact us with your device model number before ordering.
Cao Chuanping
Power Systems Consultant · 8+ years in replacement battery sourcing & evaluation · View profile →
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