EG04XL HP Envy Sleekbook 6 Compatible Battery 14.8V 4050mAh
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EG04XL HP Envy Sleekbook 6 Compatible Battery 14.8V 4050mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
EG04XL HP Envy Sleekbook 6 Compatible Battery 14.8V 4050mAh - is backordered and will ship as soon as it is back in stock.
Voltage
14.8V
Amp
4050mAh
HP Envy Sleekbook 6 Series — 14.8V Li-Polymer Replacement Battery (EG04XL)
This is a 14.8V, 4050mAh (59.94Wh) lithium-polymer battery for the HP Envy Sleekbook 6 and Envy Sleekbook 6z-1000 series notebooks. It replaces OEM part EG04XL and cross-references HSTNN-DB3T, HSTNN-IB3T, 681951-001, and TPN-C103 among others. Fit it when the original cell no longer holds charge or the laptop loses power the moment you unplug from AC.
- Sleekbook 6 and 6z-1000 platform fit: These models share the same 14.8V four-cell rail, the same physical connector, and the same BMS handshake protocol — which is why one part number covers the full Envy Sleekbook 6 lineup. The EEPROM on this cell carries the correct chemistry flags so the BIOS recognises it without errors at first boot.
- Bench tested on actual hardware: We cycled this cell on a Sleekbook 6 unit and confirmed the BMS accepted the full charge cycle without triggering an over-voltage cutoff. Charge current tapered correctly at the top of the charge curve and the cell held voltage within spec under combined CPU and display load.
- Post-install calibration on the Sleekbook 6: After fitting this cell, run one full discharge until the laptop hibernates, then charge uninterrupted to 100% without interruption. This resets the BIOS battery-learn cycle and clears the false "poor battery health" warning that appears after any cell swap on this platform.
Why the Sleekbook 6 shuts down at 20–30% after a battery swap
The Sleekbook 6 BIOS maps shutdown thresholds against a voltage curve it learned from the original cell. A new cell has a slightly different discharge curve — the fuel gauge IC reads a voltage that the old map treats as critically low even though charge remains. Under combined CPU turbo and backlit display load, voltage sags briefly and the BIOS interprets it as a dead cell. Running two full discharge-to-hibernate and uninterrupted charge-to-100% cycles gives the fuel gauge IC enough data to re-map the curve against the new cell's actual chemistry.
BIOS showing 0% or "unknown battery" on first boot after fitting
This happens when the EEPROM data from the previous cell is still cached in the EC firmware. The system hasn't yet read the new cell's identification registers. Shut the laptop down fully — not sleep or hibernate — remove AC power for 30 seconds, then reconnect AC and boot. This forces the embedded controller to re-poll the battery bus and load the new cell's EEPROM data. After that first full boot on AC, the BIOS should report voltage correctly at 14.8V nominal.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: HP
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-Polymer
- Battery Type: Li-Polymer
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My HP Sleekbook 6 fuel gauge is jumping around — showing 60%, then 45%, then 80% within minutes of unplugging. Is the new battery faulty?
No — the fuel gauge IC on the Sleekbook 6 calibrates itself against discharge data from the installed cell. A brand-new cell has no history in the IC, so the gauge interpolates badly for the first few cycles. Run two complete discharge-to-hibernate cycles followed by uninterrupted charges to 100% each time. After those calibration cycles the gauge reading will stabilise and track accurately.
The Sleekbook 6 BIOS info screen shows the Wh rating as 47Wh but the battery is labelled 59.94Wh — which is right?
The BIOS reads the Wh figure stored in the cell's EEPROM, which on some OEM-coded replacements carries the rated minimum rather than the typical capacity of the new chemistry. The physical cell is 59.94Wh as listed. The EEPROM value does not limit charging or discharge — it is a display figure only. You can confirm actual capacity by running a full discharge cycle and checking what the OS energy report logs as energy delivered.
Charging stops at around 80% and the Sleekbook 6 won't charge past that point no matter how long it stays on AC. What's causing it?
This is almost always the HP Battery Care function or Adaptive Charging setting in the BIOS — not a fault with the cell itself. HP ships some Sleekbook 6 units with a BIOS-controlled charge ceiling set at 80% to reduce long-term cell stress when the laptop stays on AC frequently. Go into the BIOS setup utility under Power Management, find Battery Care Mode or similar, and disable it or set the threshold to 100%. The cell will then charge to full capacity.
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