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Tuxedo Pulse 15 Replacement Battery 11.55V 7800mAh

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From $122.99 USD $147.99
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Fits Tuxedo Pulse 15 laptop; replaces original 11.55V lithium-polymer cell.
11.55V, 7800mAh capacity delivers 90.09Wh — matches OEM energy output for full workday runtime on this ultrabook.
Connector type and orientation match Pulse 15 internal slot; no mechanical modification needed for installation.
Bench testing showed clean BMS handshake on first charge; fuel gauge IC calibrated across full discharge-to-100% cycle without fault codes.
After installation, run one full discharge to hibernation cutoff then uninterrupted charge to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings that appear after every cell swap.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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.

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⚠️ 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

11.55V

Amp

7800mAh

Tuxedo Pulse 15 — 11.55V Li-Polymer Replacement Battery

This 11.55V, 7800mAh (90.09Wh) lithium-polymer cell replaces the original battery in the Tuxedo Pulse 15 laptop. It fits the Pulse 15 directly and restores full portable computing capacity when the original cell has degraded or failed. Voltage and physical dimensions match OEM spec: 287.60 × 97.30 × 9.50mm.

  • Pulse 15 fitment: The Pulse 15 uses a three-cell Li-Polymer pack at a nominal 11.55V rail. This replacement matches that voltage and connector configuration, so the embedded controller recognises the cell and allows charging without a BMS handshake fault.
  • Bench tested on actual hardware: We cycled this cell through charge, discharge, and load spikes typical of a developer workload — sustained CPU compile plus display at full brightness. The BMS held within spec and did not trigger a protection cutoff under those conditions.
  • First-cycle calibration on the Pulse 15: After fitting, run the laptop down to hibernate cutoff on battery alone, then charge uninterrupted to 100% without interruption. This forces the Pulse 15's fuel gauge IC to re-learn the new cell's actual capacity and clears the false "poor health" flag that the BIOS logs after every cell swap.

BIOS reporting battery health as poor after fitting the replacement cell

The Pulse 15 BIOS reads health data stored in the battery's EEPROM and compares it against accumulated cycle history from the old cell. A new cell carries fresh EEPROM values that don't match the BIOS's learned profile, so it flags the battery as degraded or unknown immediately after installation. This is a calibration mismatch, not a fault with the cell itself. One full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and clears the warning on the next boot.

Laptop shuts down at 20–30% remaining shown on the gauge

This happens when the fuel gauge IC hasn't yet mapped the new cell's voltage curve. Under full CPU plus display load, the cell voltage drops faster than the uncalibrated gauge expects, and the system hits its low-voltage shutdown threshold while the display still shows 20–30% charge remaining. It is not a defective cell — it is an uncalibrated gauge reading the wrong point on the discharge curve. Run two full discharge-to-hibernate and charge-to-100% cycles; after that the gauge aligns with actual cell voltage and the premature shutdowns stop.

Compatible Models

Pulse 15

Technical Specifications

Voltage11.55V
Amp Hours7800mAh
Capacity7800mAh
Rate90.09Wh
Net Weight350g /12.35 oz
Gross Weight610g /21.52 oz
Approximate Weight610g /21.52 oz
Dimension 287.60 x 97.30 x 9.50mm

Product Highlights

  • Brand: Tuxedo
  • 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 Tuxedo Pulse 15 BIOS is showing the new battery as 0% health or "unknown" right after I installed it — is the cell dead?

The BIOS is reading EEPROM data from the new cell and finding no cycle history, so it flags health as unknown rather than degraded. This is a fresh-cell calibration issue, not a hardware fault. Run the laptop down to hibernate cutoff purely on battery, then charge uninterrupted to 100% without unplugging. After that single learn cycle, the BIOS health reading will reflect actual cell condition on the next boot.

My Pulse 15 shows 90.09Wh in the system specs but the OS battery info is reporting a completely different Wh figure — which one is right?

The OS is reading the Wh value stored in the cell's EEPROM, which is set at the factory to match the rated chemistry specification of that specific cell configuration. If that figure differs from 90.09Wh, it means the EEPROM rated value and the actual measured capacity sit slightly apart — common across Li-Polymer cells where nominal and measured Wh diverge by a small margin. The 90.09Wh figure in the product data is the actual capacity of this cell. After two full calibration cycles the OS fuel gauge will report a figure closer to real-world capacity rather than the raw EEPROM value.

The replacement battery on the Pulse 15 stops charging at around 80% and won't go higher — is the charger or the cell at fault?

Neither — the Pulse 15 BIOS includes a charge-limit setting that caps charging at 80% by default to reduce cell stress during long sessions on AC power. Check the TUXEDO Control Center or the BIOS power settings under "Battery charge limit" or equivalent. Set the threshold to 100% if you need full capacity for portable use. The cell itself has no internal charge-stop at 80%; the cutoff is firmware-controlled entirely on the laptop side.

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