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HP Envy X2 11 Replacement Battery 3.7V 6750mAh HSTNN-IB4B

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From $65.99 USD $81.99
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Fits HP Envy X2 11 tablet; replaces OEM part numbers HSTNN-IB4B, DW02XL, HSTNN-DB4B, and 694398-2C1.
This 3.7V, 6750mAh lithium-polymer cell restores full charge capacity to the detachable 11-inch hybrid when the original pack has degraded or fails completely.
Connector and orientation match the factory pack; locking tab seats flush into the battery slot without force or adapter modification.
We bench tested the new BMS against a Gen 2 TPN-104 dock — voltage ramp was clean, no early cutoff, and the charge IC accepted full capacity on cycle one.
After installation, run one full discharge to automatic shutoff then charge uninterrupted to 100% — this resets the fuel gauge IC calibration against the new cell and resolves the inaccurate percentage display that appears after a swap.
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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

🔹 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.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

6750mAh

HP Envy X2 11 — 3.7V Li-Polymer Replacement Battery (HSTNN-IB4B)

This 3.7V, 6750mAh lithium-polymer battery fits the HP Envy X2 11 detachable tablet. It replaces OEM part numbers HSTNN-IB4B, DW02XL, HSTNN-DB4B, and 694398-2C1. Fits the Envy X2 11 base tablet unit, including models TPN-104, 11-G012NR, and 11-G010NR.

  • Envy X2 11 tablet platform: These models share the same flat Li-Polymer cell format, connector pinout, and BMS communication protocol. The 265.75 × 96.04 × 3.60 mm cell slots into the tablet chassis without modification, and the BMS handshake with the HP EC firmware runs identically across the listed model variants.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on an Envy X2 11 unit. The BMS accepted the new cell without fault flags, charge IC negotiation completed normally, and voltage held steady across the display-plus-WiFi load profile typical of this tablet.
  • Fuel gauge recalibration after swap: After installing this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The HP EC firmware calibrates its fuel gauge IC against the old cell's wear curve — one complete cycle resets that calibration against the new cell and clears inaccurate percentage readings.

Why the Envy X2 11 shuts down at 15–25% after a battery swap

The HP embedded controller tracks a learned voltage-discharge curve from the original cell. A new cell has a different internal resistance and voltage slope at low charge states. When the EC sees the voltage drop faster than its stored curve predicts — typically under combined display brightness and WiFi load — it triggers an emergency cutoff before the gauge reaches 0%. One full calibration cycle teaches the EC the new cell's actual low-voltage behaviour and eliminates the early cutoff.

Fast charging not available after battery replacement on the Envy X2 11

The Envy X2 11 charge IC runs a negotiation sequence with the battery BMS on the first charge cycle after a new cell is installed. Until that handshake completes successfully, the firmware defaults to a conservative slow-charge rate as a safety measure. Plug in via the original HP AC adapter and allow one full uninterrupted charge to 100% — do not disconnect partway through. After that cycle, the charge IC accepts the higher rate and fast charging resumes at the expected wattage.

Compatible Models

Envy X2 11 TPN-104 11-G012NR 11-G010NR Envy X211-G004TU Envy X2 11-G030EA Envy x2 11-G000ES Envy X211-G001TU Envy X211-G003TU Envy X211-G095CA Envy x2 11-G900EA

Replaces Part Numbers

HSTNN-IB4B DW02XL HSTNN-DB4B 694398-2C1

Technical Specifications

Voltage3.7V
Amp Hours6750mAh
Capacity6750mAh
Rate24.98Wh
Net Weight86g /3.03 oz
Gross Weight346g /12.20 oz
Approximate Weight346g /12.20 oz
Dimension 265.75 x 96.04 x 3.60 mm

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

The HP Envy X2 11 shows 100% on the percentage indicator but drops to 40% within minutes — is the new battery faulty?

The battery is not faulty. The HP embedded controller's fuel gauge IC is still calibrated to the old cell's discharge curve, so the percentage reading jumps erratically until the EC learns the new cell's characteristics. Run the tablet down to automatic shutoff without plugging in, then charge uninterrupted to 100%. After one complete cycle the EC recalibrates and the percentage display tracks accurately.

The Envy X2 11 tablet feels noticeably warm near the charging port while the new battery is charging — should I be concerned?

Mild warmth during the first few charge cycles is normal. The charge IC on a new lithium-polymer cell draws slightly higher current during initial formation cycles as internal resistance settles. Surface temperature should stay below 40 °C to the touch — if it feels hot enough to be uncomfortable, disconnect and check that the AC adapter output matches the original 10W or 18W HP spec printed on the adapter label.

After fitting the replacement battery, the HP Envy X2 11 percentage drops faster than expected from 100% down to about 70%, then slows down — what causes that?

This is fuel gauge drift — the EC is using a discharge curve built from the degraded original cell, so the early portion of the percentage scale is compressed on the new cell. The fix is a single full calibration cycle: discharge to automatic shutoff, then charge uninterrupted to 100% without using the device. After that cycle, the EC maps the new cell's actual capacity across the full 0–100% range and the drop rate normalises.

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